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For the Inventor, By the Inventor

Tokyo, Japan

Denyo Kabushiki Kaisha

Calculating rank
USPTO Granted Patents = 27



Trademarks = 3

Forward Citations = 300

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30 inventors (with patents filed for the assignee):

goldMedal Shunichi Tetsui (6 out of 6 patents)

silverMedal Masanobu Takeda (6 out of 6 patents)

bronzeMedal Hirotaka Yamamoto (5 out of 13 patents)

4.  Yasumasa Mizuno (5 out of 5 patents)

5.  Toru Hiroi (4 out of 4 patents)

6.  Hitoshi Yasuda (4 out of 5 patents)

7.  Satoshi Kojima (4 out of 5 patents)

8.  Noboru Chosei (3 out of 3 patents)

9.  Minoru Nakamura (2 out of 19 patents)

10.  Kentaro Kawabata (2 out of 2 patents)

11.  Seiji Matsuo (2 out of 2 patents)

12.  Hideki Ikegami (2 out of 2 patents)

13.  Shinichi Konishi (2 out of 2 patents)

14.  Yoshikazu Saito (1 out of 39 patents)

15.  Katsuyuki Fujie (1 out of 1 patent)


Core Competencies:
Welding Machine
Engine-Driven Generator
Cooling Apparatus
Permanent Magnet
Welding Method
Soundproof Generator
Coupling Plate
Arc Welder
Inspection Method
Rotors Manufacturing
Lifting Lug
Inductor Generator

27 patents:

1. 8987638 - Engine driven welding machine (2015-03-24),
2. 8716626 - Shielded metal arc welding machine (2014-05-06),
3. 7736129 - Cooling fan for rotating machine (2010-06-15),
4. 7727073 - Coupling plate for engine-driven generator (2010-06-01),
5. 7458482 - Protective cover (2008-12-02),
6. 7216608 - Engine cooling apparatus (2007-05-15),
7. 7198245 - Engine-driven work machine (2007-04-03),
8. D534863 - Engine-driven generator (2007-01-09),
9. 7080611 - Engine-driven work machine (2006-07-25),
10. D517008 - Engine-driven generator (2006-03-14),
11. D515030 - Engine-driven generator (2006-02-14),
12. D514132 - Lifting lug for an engine-driven operating machine (2006-01-31),
13. 6040556 - Engine driven arc welder (2000-03-21),
14. 6006418 - Method of manufacturing a rotors with permanent magnet (1999-12-28),
15. 5936320 - Engine-driven permanent magnetic type welding generator (1999-08-10),
Company Overview
Denyo Kabushiki Kaisha is a prominent Japanese company specializing in the development and manufacture of generators, welding machines, and related equipment. With a strong focus on innovation, Denyo integrates advanced technologies to enhance the efficiency and reliability of its products. The company serves a diverse range of industries, including construction, manufacturing, and telecommunications, providing solutions that meet the evolving needs of its global clientele. Headquartered in Tokyo, Denyo is committed to sustainability and energy efficiency in its offerings.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

27 Patents

#1,138 in Tokyo

#2,459 in Japan

#24,046 in the World

Tokyo, JP
Tokyo, Japan

Denyo Kabushiki Kaisha

Forward Citations = 300

30 inventors:

goldMedal Shunichi Tetsui (6 out of 6 patents)

silverMedal Masanobu Takeda (6 out of 6 patents)

bronzeMedal Hirotaka Yamamoto (5 out of 13 patents)

4.  Yasumasa Mizuno (5 out of 5 patents)

5.  Toru Hiroi (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Denyo Kabushiki Kaisha. Retrieved from https://idiyas.com/company/denyo-kabushiki-kaisha

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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