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Hamanakodenso Co., Ltd.

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USPTO Granted Patents = 35

% Expired Patents = 42.9

EPO Patents = 5

Forward Citations = 92

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42 inventors (with patents filed for the assignee):

Takao Ishida (8 out of 8 patents)

Tomoaki Warashina (6 out of 6 patents)

Tetsunori Inoguchi (5 out of 6 patents)

4. Masashi Sugano (5 out of 5 patents)

5. Hideya Tochihara (4 out of 4 patents)

6. Kengo Suzuki (3 out of 21 patents)

7. Kimio Uchida (3 out of 12 patents)

8. Yuuichirou Miura (2 out of 2 patents)

9. Koji Suzuki (2 out of 11 patents)

10. Motoyoshi Ando (2 out of 15 patents)

11. Masanori Suzuki (2 out of 64 patents)

12. Fumiaki Kaneko (2 out of 2 patents)

13. Masahiro Hisada (2 out of 2 patents)

14. Yutaka Sato (2 out of 2 patents)

15. Yoshinori Suzuki (1 out of 12 patents)

Core Competencies:

Electromagnetic Valve

Fluid System

Solenoid Device

Fuel Vapor Processing

Control Valve

Evaporated Fuel

Purge Control

Check Valve

Alarm Sound Generation

Hydraulic Pressure Control

Vehicle Notification

Shift Lever Lock

35 patents: Sort by Forward Citations

1. 11953116 - Electromagnetic valve and fluid system (2024-04-09),

2. 11846364 - Electromagnetic valve (2023-12-19),

3. 11618107 - Device for manufacturing electric component and method for manufacturing electric component (2023-04-04),

4. 11293557 - Solenoid valve (2022-04-05),

5. 11286890 - Valve member and evaporative fuel processing system (2022-03-29),

6. 11193437 - Evaporative fuel processing device (2021-12-07),

7. 11193436 - Evaporated fuel processing device (2021-12-07),

8. 11098679 - Sealing valve for fuel vapor processing apparatus (2021-08-24),

9. 11060617 - Control valve and method for manufacturing control valve (2021-07-13),

10. 11060485 - Control valve assembly (2021-07-13),

11. 11047345 - Evaporated fuel processing device (2021-06-29),

12. 11028790 - Purge control valve device (2021-06-08),

13. 11002200 - Evaporated fuel processing device (2021-05-11),

14. 10982774 - Control valve and method for manufacturing control valve (2021-04-20),

15. 10961954 - Valve device and fuel evaporation gas purge system (2021-03-30),

Company Overview

Hamanakodenso Co., Ltd. is a Japanese company specializing in the development and manufacturing of advanced electronic components and systems. With a focus on automotive and industrial applications, the company leverages innovative technologies to enhance performance and reliability in its products. Hamanakodenso is committed to research and development, aiming to meet the evolving demands of the market while contributing to advancements in electronics and automation across various sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

35 Patents

#3 in Kosai

#2,133 in Japan

#19,187 in the World

Hamanakodenso Co., Ltd.

Forward Citations = 92

42 inventors:

Takao Ishida (8 out of 8 patents)

Tomoaki Warashina (6 out of 6 patents)

Tetsunori Inoguchi (5 out of 6 patents)

4. Masashi Sugano (5 out of 5 patents)

5. Hideya Tochihara (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hamanakodenso Co., Ltd.. Retrieved from https://idiyas.com/company/hamanakodenso-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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