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Nishihara Environmental Sanitation Research Corporation

USPTO Granted Patents = 10

Forward Citations = 187

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14 inventors (with patents filed for the assignee):

Tomio Suzuki (3 out of 14 patents)

Noboru Hayakawa (3 out of 3 patents)

Toshio Saito (2 out of 33 patents)

4. Takashi Itoh (2 out of 26 patents)

5. Youichi Hamamoto (2 out of 3 patents)

6. Yasuhiro Okubo (2 out of 2 patents)

7. Kaoru Watanabe (1 out of 16 patents)

8. Takeshi Nishiguchi (1 out of 6 patents)

9. Kazuo Takeishi (1 out of 1 patent)

10. Yoshikazu Shoda (1 out of 1 patent)

11. Tastuyuki Iwai (1 out of 1 patent)

12. Akaru Furusato (1 out of 1 patent)

13. Kazuo Yukawa (1 out of 1 patent)

14. Shin-ichi Tabata (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 5145589 - Solid-liquid separator and process for washing the same (1992-09-08),

2. 5098567 - Waste water treating process (1992-03-24),

3. 5006251 - Process for treating organic waste water (1991-04-09),

4. 4915681 - Centrifugal separator with continuous discharge (1990-04-10),

5. 4818408 - Intermittent aeration type biological treatment process and system (1989-04-04),

6. 4661845 - Microorganism monitoring apparatus (1987-04-28),

7. 4655925 - Activated sludge method (1987-04-07),

8. 4302332 - Centrifugal thickener (1981-11-24),

9. 4137177 - Filtering apparatus for sludgy liquids (1979-01-30),

10. 4002053 - Method and apparatus for measuring density of suspension (1977-01-11),

Nishihara Environmental Sanitation Research Corporation is a leading environmental solutions provider focused on sanitation research and technology. With a commitment to innovation and sustainability, the company offers a wide range of services and products to support waste management and environmental preservation. Visit our website for more information.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

10 Patents

#1,690 in Tokyo

#4,283 in Japan

#54,238 in the World

Nishihara Environmental Sanitation Research Corporation

Forward Citations = 187

14 inventors:

Tomio Suzuki (3 out of 14 patents)

Noboru Hayakawa (3 out of 3 patents)

Toshio Saito (2 out of 33 patents)

4. Takashi Itoh (2 out of 26 patents)

5. Youichi Hamamoto (2 out of 3 patents)

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