Patented low-temperature plasma decomposes and neutralizes water, air, CO₂ and PFAS.
Field-proven technology, brought to your industry.
A new industrial era, opened by low-temperature plasma.
Low-temperature plasma ― the fourth state of matter ― is now rewriting the conventions of industry.
Free from chemicals and heat. Achieving sterilization, cleaning, decomposition and surface modification without adding environmental burden ―
low-temperature plasma is a next-generation environmental technology essential to a sustainable society, and research and development is accelerating at institutions worldwide.
Its applications reach across nearly every future industry: AI and semiconductors, medical, beauty, food, agriculture and water treatment.
Yet while much of the world remains at the research stage, PX is already a step ahead.
We were among the first in the world to develop low-temperature plasma generators and reactors that run reliably at an industrial scale.
Through adoption in rail infrastructure, defense and medical settings, we have turned laboratory technology into "technology you can use today."
Plasma Transformation ― industrial change driven by plasma, delivered through implementation rather than concepts.
PX leads the social implementation of low-temperature plasma at the world's forefront.
With low-temperature plasma technology, we solve challenges in water, air, the environment, medical care and energy, contributing to the future of the planet and its people. By decomposing and neutralizing pollutants rather than merely capturing them, we realize a circular society free of secondary waste.
To implement low-temperature plasma as the industrial infrastructure of the world, achieving both carbon neutrality and resource circulation. We aim to grow "Carbon Transformation" ― turning CO₂ into a resource ― into a global-standard technology.
Prove it in the field (results on-site come first). Protect it with patents (establishing our proprietary technology as intellectual property). Expand through co-creation (partnering with universities, companies and government). Guided by these three principles, we aim to be a company trusted by society through solid technology.
Latest updates and topics from PX Co., Ltd.
The official website of PX Co., Ltd. has launched. We will keep this site updated with our low-temperature plasma technology, products and track record. Thank you for your continued support.
PX Co., Ltd. (head office: Kasumigaseki, Chiyoda-ku, Tokyo) was established to bring low-temperature plasma technology into real-world use, addressing challenges in water, air, CO₂ and PFAS.
* Latest topics such as exhibitions and technical presentations will be posted here as they become available.
Plasma is often called the "fourth state of matter," after solid, liquid and gas.
Low-temperature plasma is a next-generation technology that uses electrical energy to give electrons high energy, triggering chemical reactions ― which would normally be difficult ― at near-ambient temperature.
Unlike the ultra-high-temperature plasma of a fusion reactor, it keeps the treatment target near room temperature.
A major advantage is that it can be applied even to heat-sensitive targets such as water, air, biological materials, food and precision components.
It is one of the advanced plasma-based technologies that share common roots with the ion engine of Japan's asteroid probe "Hayabusa."
Inheriting the low-temperature plasma technology, intellectual property, research results and field-proven track record developed through joint research with U.S. institutions, the Japan Institute for Future Science and the Institute of Science Tokyo, we develop industrial low-temperature plasma systems centered on our proprietary PX Reactor and PX Electrode technologies.
The PX Electrode incorporates powerful magnets and ultrasonic elements of specific frequencies. By combining magnetic-field control of the plasma with ultrasonic dispersion and reaction-promotion of reactive species, we further enhance discharge efficiency and treatment performance.
Thanks to a proprietary structure with no discharge electrode inside the tube, we achieved a flexible, bendable soft-tube form. It can be miniaturized down to the φ1 mm class and stably generates numerous plasma jets.
Its structure allows it to reach inside the body via an endoscope and other means, and its selective action on cancer cells while minimizing effects on healthy cells has been reported by research institutions in Japan and abroad. It is a next-generation device with expected applications in the medical and beauty fields.
The overall strength of low-temperature plasma is that it can decompose even persistent substances at room temperature and without chemicals, while producing little secondary waste.
| Criterion | Low-Temp Plasma (PX) | Chemical Treatment | High-Temp Treatment | Activated-Carbon Adsorption |
|---|---|---|---|---|
| Treatment temperature | Near room temp ◎ | Room temp ○ | High temp × | Room temp ○ |
| Chemical use | Virtually none ◎ | Large amounts required × | None ○ | None ○ |
| Persistent substances (e.g. PFAS) | Decomposable ◎ | Difficult × | Partial △ | Adsorption only △ |
| Secondary waste | Little ◎ | Sludge generated × | Little ○ | Spent carbon × |
| Heat-sensitive targets | Applicable ◎ | Applicable ○ | Not possible × | Applicable ○ |
| Energy efficiency | High ○ | Medium △ | Low × | High ○ |
◎ = Excellent ○ = Good △ = Conditional × = Unfavorable
We welcome inquiries about deployment and field demonstrations
Contact UsBeyond laboratory technology, our systems are being demonstrated and adopted in the field, both in Japan and abroad.
PGX is an industrial-scale integrated plasma system that treats both gas and water using atmospheric-pressure low-temperature plasma (AC-DBD).
It handles decomposition of various gases, purification of wastewater, and decomposition of persistent substances (PFAS, PFOA, etc.).
From treatment all the way to generation of Plasma-Activated Water (PAW), it delivers a one-stop solution at low temperature and low power.
Conventional activated carbon, ion exchange and membrane treatment merely capture and separate pollutants without decomposing them, leaving spent adsorbents and concentrated liquids behind as new waste.
Because PGX decomposes and neutralizes pollutants, it dramatically reduces secondary waste.
Plasma-based gas and water treatment is attracting global attention as a promising technology, yet most implementations remain at the laboratory or pilot scale.
We are one of the few technology companies to have deployed an industrial-scale multilayer plasma reactor with a proven treatment track record on actual units.
| Phase | Treatment Capacity |
|---|---|
| Gas phase | 1,000–3,000 m³/h |
| Liquid phase | 30–50 tons/h (plasma multifunctional water output) |
Target facilities: feed plants, industrial-waste plants, food plants, sewage treatment plants, chemical plants, semiconductor plants (exhaust-gas / wastewater treatment)
The world's first plasma turned into ultra-fine bubbles.
Using no chemicals whatsoever, it rapidly destroys microbes down to their nucleus ― "the safest and most powerful non-thermal sterilization system."
Because it uses no chemicals at all, it is gentle on both people and the environment. From food and medical to agriculture and fisheries, it replaces conventional chemical disinfectants and cleaners. After use, it returns to ordinary air and water, leaving no by-products.
Ultra-fine bubbles are less than 1 micron in diameter. They deliver plasma reactive species into every corner of pores (200 microns), fibers and tiny gaps, decomposing and removing organic matter and harmful substances.
It decomposes dirt and sebum, enabling detergent-free laundry, and breaks down black mold in the washing tub. It also decomposes persistent odor gases such as hydrogen sulfide and ammonia, eliminating unpleasant smells around water fixtures.
| Criterion | Plasma Fine Bubble Water | Ozonated Water | Electrolyzed / Hypochlorous Acid Water |
|---|---|---|---|
| Sterilization method | Sterilizes with plasma | Sterilizes with ozone | Sterilizes with hypochlorous acid |
| Components | OH radicals, nitrogen radicals, hydrogen peroxide (the same as those generated by human immune cells) | Ozone | Hypochlorous acid |
| Inactivation power (sterilizing power) | 200× ozone / 1400× hypochlorous acid | 7× hypochlorous acid | 1 (baseline) |
| Safety | Chemical-free, organic sterilization | Highly toxic; requires concentration control | Carcinogenic |
| Environmental impact | Returns to ordinary water in about 1–72 hours, placing no burden on the environment | Corrodes plastic, rubber and metal; causes skin and mucous-membrane damage | Residual chlorine accumulates, polluting soil and water; rusts and discolors metal |
| Cost efficiency | Generated in large volumes with low power, dramatically reducing water use | Requires generation equipment and raw materials; high cost | Requires production, dilution and filling equipment; high cost |
| Positive effects on the body | Reactive species reach every corner of the pores, promoting collagen production and breaking down melanin | — | — |
| Cost per liter | Under ¥1 | ¥50–¥65 | ¥2,000–¥5,000 (hypochlorite) / ¥1,000–¥3,000 (alcohol) |
Compared with the conventional method of directly irradiating with plasma, it achieved over 20× the rate of reactive-species introduction (tested at the Institute of Science Tokyo).
In sterilization against Staphylococcus aureus, bubbling roughly doubled the BA value, an indicator of sterilization speed.
Even against non-enveloped viruses, which are hard to inactivate with alcohol and the like, it achieved over 99% inactivation in 10 seconds.
We welcome inquiries about deployment and field demonstrations
Contact UsWe offer water treatment (PFB) and exhaust-gas / wastewater treatment (PGX) as a one-stop proposal.
| Model | Product Name | Approx. Capacity | Main Applications |
|---|---|---|---|
| PFB-4 | Compact model | Approx. 600 L/h | Toilets, cleaning, sterilization, deodorizing, small facilities |
| PFB-1 | JR type | Approx. 1,000 L/h | Station buildings, public facilities, commercial use |
| PFB-2 | Bubbling / circulation combined type | Approx. 1,200 L/h | Wastewater treatment, circulation systems |
| PFB-3 | Standard large model | Approx. 3,000 L/h | Factories, facilities, wastewater treatment |
| PFB-X | Custom build (JR Kunitachi Station spec) | Approx. 5,000 L/h (5 tons/h) | Large-scale facilities |
| Model | Application | Lead Time |
|---|---|---|
| PGX Standard System | Decomposition of various gases, wastewater treatment, plasma-water generation | Approx. 2 months |
| PGX Custom System | Large-scale equipment for factories (custom-designed) | Set individually |
* Specifications are subject to change without notice.
Please inquire separately for pricing and quotations.
Treatment performance varies with the type, concentration, water quality and flow rate of the target substance.
We recommend a demonstration with actual samples before deployment.
Low-temperature plasma is not a technology limited to a single application.
PX Co., Ltd. expands into a wide range of fields.
Decomposition of organic matter, water-quality improvement, sterilization, PFAS / PFOA decomposition.
Handling odors, VOCs and NOx, plus air purification.
Treatment of exhaust gas and wastewater in semiconductor manufacturing processes, and solutions to reduce environmental impact.
Applications to hygienic environments, cell-culture environments and more.
Applications to cleaning, freshness preservation and hygiene management.
Plasma Fine Bubble water and next-generation energy fields.
Detergent-free washing machines, air conditioners and refrigerators that sterilize and deodorize, storage units that preserve freshness, and more. By embedding low-temperature plasma, we transform household appliances themselves into the next generation.
From land and sea to information infrastructure and the environment ― industrial sites around the world that generate exhaust gas and wastewater are the stage where low-temperature plasma performs.
Beyond decomposing harmful substances, low-temperature plasma is expanding into "carbon circulation" ― turning CO₂ into a resource ― and the recovery of valuable materials from waste.
We decompose, on-site, the CO₂ contained in the flue gas of factories and plants such as cement plants and thermal power stations. In a plasma fluidized bed, it can even be recovered as carbon black (joint research with the Institute of Science Tokyo). We also exhibited a CO₂ decomposition unit at the UN booths of COP26 and COP27.
Plasma enables expansion into secondary products such as synthesis gas from CO₂ and methane. Recovered carbon is circulated back into fuels and raw materials.
We are advancing applications that extract and recover phosphorus, potassium, rare metals and more from wastewater and waste ― contributing to a resource-circulating society.
To address the enormous waste-heat and power challenges of data centers and cooling towers, we are developing next-generation systems that apply low-temperature plasma.
A next-generation system under development for data centers and cooling towers. It integrates energy storage (flow battery) and cooling (plasma-treated water), using the electrolyte for both storage and cooling. It simultaneously delivers stable power supply, waste-heat countermeasures and improved cooling efficiency, while plasma treatment suppresses scale and slime and sterilizes the water ― also reducing the maintenance burden of the cooling-water system. It answers the growing power and heat challenges of data centers with a single system.
Selling individual devices is not our ultimate goal.
What we aim to build is a technology foundation called the "PX Platform."
Sharing the same technological philosophy, we deploy product families optimized for each industry.
| Company | PX Co., Ltd. |
| Name Origin | Plasma Transformation |
| CEO | Minami Murahashi, CEO |
| Address | Sankyu Bldg. 3F, 3-6-14 Kasumigaseki, Chiyoda-ku, Tokyo 100-0013, Japan |
| Contact | Email only (form below) |
| Group Company | IPX LLC (R&D) → (Japanese) |
In addition to the intellectual property we hold ourselves, PX Co., Ltd. has built an IP management framework that centrally manages and leverages the patents, know-how and related intellectual property held across our group companies.
Centered on low-temperature plasma, we hold and file intellectual property across a wide range of technical fields ― plasma electrodes, reactors, plasma-activated water (PAW), fine bubbles, PFAS decomposition, exhaust-gas treatment, semiconductor processes, storage batteries and regenerative medicine. Based on publicly available patent information, we aim to build one of the world's largest IP portfolios in low-temperature plasma.
Beyond developing, manufacturing and selling our own products, we design and supply application-specific plasma reactors, engage in joint development and OEM/ODM technology provision, and run a licensing business for companies in Japan and abroad ― advancing the social implementation of low-temperature plasma.
An intellectual-property portfolio built around PX's low-temperature plasma technology (including group-company IP). Representative examples are shown below.
* Granted / filed in Japan and the United States (including PCT international applications)
For product deployment, demonstration tests, joint research, technical partnerships, distributor / sales partnerships or licensing, please contact us using the form below. We will reply within 2–3 business days.
Inquiries are accepted by email only.
The information you provide will be used only to respond to your inquiry.
Your inquiry has been received.
A member of our team will get back to you. Thank you very much.