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For the Inventor, By the Inventor

Tokyo, Japan

Tokyo Metropolitan Sewerage Service Corporation


USPTO Granted Patents = 8



Forward Citations = 21

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34 inventors (with patents filed for the assignee):

goldMedal Hiroshi Komatsu (4 out of 5 patents)

silverMedal Kenji Hasegawa (3 out of 43 patents)

bronzeMedal Motonobu Ito (3 out of 3 patents)

4.  Shigeki Nishimura (2 out of 19 patents)

5.  Kazuhiro Yamanouchi (2 out of 2 patents)

6.  Iwao Ito (2 out of 2 patents)

7.  Hiroyuki Takahashi (1 out of 212 patents)

8.  Makoto Maeda (1 out of 16 patents)

9.  Tamotsu Kikuchi (1 out of 1 patent)

10.  Takato Aoyama (1 out of 1 patent)

11.  Takaaki Odate (1 out of 1 patent)

12.  Osamu Igawa (1 out of 1 patent)

13.  Hiromi Watanabe (1 out of 4 patents)

14.  Shigeru Tsukada (1 out of 1 patent)

15.  Yuji Furuya (1 out of 2 patents)


8 patents:

1. 10415201 - Opening/closing device (2019-09-17),
2. 9850649 - Vortex flow type water surface control device for draining device (2017-12-26),
3. 9302923 - Wastewater treatment apparatus, wastewater treatment method, wastewater treatment system, control device, and control method (2016-04-05),
4. 8979432 - Vortex flow type water surface control device for draining device (2015-03-17),
5. 8695628 - Opening/closing device (2014-04-15),
6. 8590560 - Opening/closing device (2013-11-26),
7. 7073869 - Shield tunneling machine (2006-07-11),
8. 5382356 - Method and apparatus for controlling sludge dewatering (1995-01-17),
Tokyo Metropolitan Sewerage Service Corporation is responsible for managing the sewerage system in Tokyo, Japan. They provide safe and efficient sewage treatment services to protect public health and the environment. With a focus on sustainability and innovation, the corporation works to ensure the cleanliness of the city's waterways and improve the quality of life for its residents.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

8 Patents

#1,913 in Tokyo

#4,917 in Japan

...
Tokyo, Japan

Tokyo Metropolitan Sewerage Service Corporation

Forward Citations = 21

34 inventors:

goldMedal Hiroshi Komatsu (4 out of 5 patents)

silverMedal Kenji Hasegawa (3 out of 43 patents)

bronzeMedal Motonobu Ito (3 out of 3 patents)

4.  Shigeki Nishimura (2 out of 19 patents)

5.  Kazuhiro Yamanouchi (2 out of 2 patents)

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