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For the Inventor, By the Inventor

Obu, Japan

Ansei Corporation


USPTO Granted Patents = 20



Forward Citations = 80

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14 inventors (with patents filed for the assignee):

goldMedal Masaharu Takagi (10 out of 10 patents)

silverMedal Satoshi Yamaji (8 out of 8 patents)

bronzeMedal Satoshi Umezu (4 out of 4 patents)

4.  Hiroki Uehara (3 out of 3 patents)

5.  Koji Ishii (3 out of 6 patents)

6.  Masaaki Noda (3 out of 3 patents)

7.  Hiroshi Kawai (2 out of 2 patents)

8.  Yasunori Sahashi (2 out of 2 patents)

9.  Yukio Iwase (1 out of 1 patent)

10.  Masato Fukaya (1 out of 1 patent)

11.  Shigeru Takeuchi (1 out of 6 patents)

12.  Masaya Okuyama (1 out of 1 patent)

13.  Yasuhiro Hashiba (1 out of 1 patent)

14.  Hidenobu Hayashi (1 out of 1 patent)

15.  Yasuhiro Hashiba (0 patent)


20 patents:

1. 12378800 - Lock apparatus for vehicle open/close body (2025-08-05),
2. 11739571 - Linear reciprocating-motion apparatus (2023-08-29),
3. 11485222 - Apparatus for opening and closing a lid of a vehicle (2022-11-01),
4. 11433764 - Apparatus for opening and closing a lid of a vehicle (2022-09-06),
5. 11365569 - Vehicle door lock apparatus (2022-06-21),
6. 11365568 - Vehicle door lock apparatus (2022-06-21),
7. 11180935 - Vehicle door lock apparatus (2021-11-23),
8. 10961751 - Vehicle door lock apparatus (2021-03-30),
9. 10870371 - Operation device (2020-12-22),
10. 10472864 - Vehicle door lock apparatus (2019-11-12),
11. 10458158 - Vehicle door lock apparatus (2019-10-29),
12. 10011203 - Cable apparatus (2018-07-03),
13. 9631404 - Vehicle door lock apparatus (2017-04-25),
14. 9410345 - Vehicle door lock device (2016-08-09),
15. 9163434 - Vehicle door lock apparatus (2015-10-20),
Company Overview
Ansei Corporation, headquartered in Obu, Japan, specializes in the development and manufacturing of advanced materials and components for various industries. The company focuses on innovative solutions in fields such as automotive engineering, electronics, and industrial applications. Ansei is committed to enhancing product performance and sustainability through cutting-edge research and technology, positioning itself as a key player in the global market for high-quality engineering materials.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Ansei Corporation USPTO Patent Assignee Logo
20 Patents

#4 in Obu

#2,944 in Japan

#31,264 in the World

Obu, JP
Obu, Japan

Ansei Corporation

Forward Citations = 80

14 inventors:

goldMedal Masaharu Takagi (10 out of 10 patents)

silverMedal Satoshi Yamaji (8 out of 8 patents)

bronzeMedal Satoshi Umezu (4 out of 4 patents)

4.  Hiroki Uehara (3 out of 3 patents)

5.  Koji Ishii (3 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ansei Corporation. Retrieved from https://idiyas.com/company/ansei

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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