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Chlorine Engineers Corp., Ltd.

USPTO Granted Patents = 76

EPO Patents = 10

Trademarks = 1

Forward Citations = 649

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108 inventors (with patents filed for the assignee):

Shinji Katayama (11 out of 16 patents)

Teruo Ichisaka (9 out of 9 patents)

Masaaki Kato (8 out of 25 patents)

4. Kiyohito Asaumi (8 out of 9 patents)

5. Takamichi Kishi (7 out of 11 patents)

6. Osamu Arimoto (6 out of 6 patents)

7. Hiroyuki Harada (6 out of 6 patents)

8. Tadao Ikegami (6 out of 6 patents)

9. Nobutaka Goto (6 out of 6 patents)

10. Nobuo Kobayashi (5 out of 18 patents)

11. Naoya Hayamizu (5 out of 31 patents)

12. Terumi Matsuoka (5 out of 5 patents)

13. Koji Saiki (4 out of 17 patents)

14. Mitsuharu Hamamori (4 out of 5 patents)

15. Hitoshi Satoh (4 out of 4 patents)

Core Competencies:

Electrolytic Cell

Ion Exchange Membrane

Gas Diffusion Electrode

Chlorine Production

Sodium Hydroxide

Hydrogen Generation

Sulfuric Acid Electrolysis

Ozone Generator

Electrolyzer

Semiconductor Cleaning

Brine Treatment

Hypochlorite Production

76 patents: Sort by Forward Citations

1. 9476130 - Electrolytic cell (2016-10-25),

2. 9315908 - Electrolytic cell for producing chlorine—sodium hydroxide and method of producing chlorine—sodium hydroxide (2016-04-19),

3. 9181624 - Method of electrolysis employing two-chamber ion exchange membrane electrolytic cell having gas diffusion electrode (2015-11-10),

4. 9175410 - Oxygen gas diffusion cathode, electrolytic cell employing same, method of producing chlorine gas and method of producing sodium hydroxide (2015-11-03),

5. 8940139 - Gas diffusion electrode equipped ion exchange membrane electrolyzer (2015-01-27),

6. 8454754 - Cleaning method and method for manufacturing electronic device (2013-06-04),

7. 8277623 - Conductive diamond electrode and ozone generator using the same (2012-10-02),

8. 8236161 - Apparatus for electrolyzing sulfuric acid, method of performing electrolysis, and apparatus for processing a substrate (2012-08-07),

9. 8211287 - Sulfuric acid electrolysis process (2012-07-03),

10. 8197649 - Ion exchange membrane electrolytic cell (2012-06-12),

11. 8187449 - Cleaning method by electrolytic sulfuric acid and manufacturing method of semiconductor device (2012-05-29),

12. 8137513 - Sulfuric acid electrolytic cell and a sulfuric acid recycle type cleaning system applying the sulfuric acid electrolytic cell (2012-03-20),

13. 8034221 - Electrode for hydrogen generation and process for preparation thereof (2011-10-11),

14. 7927471 - Three-dimensional electrode for electrolysis, ion exchange membrane electrolytic cell and method of electrolysis using three-dimensional electrode (2011-04-19),

15. 7922879 - Ion exchange membrane electrolyzer (2011-04-12),

Chlorine Engineers Corp., Ltd. is a leading Japanese company specializing in the design, manufacturing, and installation of electrolyzers for the production of chlorine and caustic soda. With decades of experience, we provide innovative and sustainable solutions to our global clients in various industries such as chemical, water treatment, and metal finishing. Our advanced electrolysis technology ensures high efficiency and reliability, while our dedicated team offers comprehensive support from initial consultation to after-sales service. Visit our website to learn more about our products and expertise in the field of electrolysis.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

76 Patents

#559 in Tokyo

#1,302 in Japan

#9,510 in the World

Chlorine Engineers Corp., Ltd.

Forward Citations = 649

108 inventors:

Shinji Katayama (11 out of 16 patents)

Teruo Ichisaka (9 out of 9 patents)

Masaaki Kato (8 out of 25 patents)

4. Kiyohito Asaumi (8 out of 9 patents)

5. Takamichi Kishi (7 out of 11 patents)

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