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For the Inventor, By the Inventor

Tokyo, Japan

Mitani Valve Co., Ltd.

Calculating rank
USPTO Granted Patents = 20

% Expired Patents = 15.0


Forward Citations = 223

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14 inventors (with patents filed for the assignee):

goldMedal Masato Suzuki (7 out of 104 patents)

silverMedal Osamu Takizawa (6 out of 6 patents)

bronzeMedal Yasuo Ohshima (4 out of 5 patents)

4.  Masaaki Seki (3 out of 3 patents)

5.  Ryoichi Owada (1 out of 1 patent)

6.  Hideo Togashi (1 out of 1 patent)

7.  Hiroshi Kanno (1 out of 23 patents)

8.  Hideo Okada (1 out of 2 patents)

9.  Katsuhiko Kanoya (1 out of 1 patent)

10.  Yasunori Ando (1 out of 1 patent)

11.  Toshimichi Majima (1 out of 1 patent)

12.  Yoshio Monden (1 out of 1 patent)

13.  Kazuya Uesawa (1 out of 1 patent)

14.  Ryuichi Mizuguchi (1 out of 1 patent)

15.  Toshio Tominaga (2 patents)


20 patents:

1. 11208255 - Fixed quantity injection unit (2021-12-28),
2. D929228 - Spray head for a container (2021-08-31),
3. 10994922 - Metering valve mechanism of aerosol container and aerosol type product with said metering valve mechanism (2021-05-04),
4. D873137 - Spray head for a container (2020-01-21),
5. 10029844 - Aerosol housing mechanism and aerosol-type product having the aerosol housing mechanism (2018-07-24),
6. D777033 - Spray head for a container (2017-01-24),
7. D721961 - Spray head for a container (2015-02-03),
8. 8893933 - Actuator-inverted constant-volume ejection mechanism and aerosol-type product provided with the actuator-inverted constant-volume ejection mechanism (2014-11-25),
9. D710200 - Spray head for a container (2014-08-05),
10. 8245887 - Content discharge mechanism for pump-type container and pump-type product with content discharge mechanism (2012-08-21),
11. 8201757 - Flow rate regulator unit and aerosol type product with flow rate regulator unit (2012-06-19),
12. D661580 - Spray head for a container (2012-06-12),
13. 7886995 - Content discharge mechanism and aerosol type product and pump type product equipped with the mechanism (2011-02-15),
14. D573463 - Pump head for container (2008-07-22),
15. D573021 - Spray/pump head for container (2008-07-15),
Company Overview
Mitani Valve Co., Ltd. is a prominent manufacturer based in Tokyo, specializing in the development and production of high-quality valves and related components for various industrial applications. The company focuses on innovative solutions that enhance efficiency and reliability in fluid control systems. With a commitment to advanced engineering and technology, Mitani Valve serves a diverse range of sectors, including oil and gas, water supply, and chemical processing, contributing to the infrastructure and industrial landscape in Japan and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Mitani Valve Co., Ltd. USPTO Patent Assignee Logo
20 Patents

#1,343 in Tokyo

#2,946 in Japan

#31,315 in the World

Tokyo, JP
Tokyo, Japan

Mitani Valve Co., Ltd.

Forward Citations = 223

14 inventors:

goldMedal Masato Suzuki (7 out of 104 patents)

silverMedal Osamu Takizawa (6 out of 6 patents)

bronzeMedal Yasuo Ohshima (4 out of 5 patents)

4.  Masaaki Seki (3 out of 3 patents)

5.  Ryoichi Owada (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mitani Valve Co., Ltd.. Retrieved from https://idiyas.com/company/mitani-valve-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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