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For the Inventor, By the Inventor

Tokyo, Japan

Denyo Co., Ltd.


USPTO Granted Patents = 9


Forward Citations = 239

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15 inventors (with patents filed for the assignee):

goldMedal Masao Yamada (4 out of 4 patents)

silverMedal Kentaro Kawabata (2 out of 2 patents)

bronzeMedal Susumu Torii (2 out of 2 patents)

4.  Chiaki Murata (2 out of 10 patents)

5.  Akira Imayoshi (2 out of 2 patents)

6.  Koji Suga (2 out of 2 patents)

7.  Seiji Matsuo (1 out of 1 patent)

8.  Yasuhiro Kobayashi (1 out of 1 patent)

9.  Shinji Matsuda (1 out of 1 patent)

10.  Tadahiro Fujita (1 out of 1 patent)

11.  Hiroshi Mizokami (1 out of 1 patent)

12.  Shoichi Fujimoto (1 out of 1 patent)

13.  Sanpei Sato (1 out of 1 patent)

14.  Toshiaki Tanaka (1 out of 1 patent)

15.  Kenji Katsuki (1 out of 1 patent)


9 patents:

1. 9366164 - DPF system for an engine generator (2016-06-14),
2. D575733 - Engine generator (2008-08-26),
3. D571292 - Engine generator (2008-06-17),
4. 7015677 - Automatic voltage regulator with function for suppressing overshoot (2006-03-21),
5. 6985821 - Apparatus for calculating an effective voltage (2006-01-10),
6. D503381 - Engine generator (2005-03-29),
7. D480359 - Engine generator (2003-10-08),
8. D475726 - Engine-driven welding machine (2003-06-11),
9. 6491133 - Soundproof type engine driven work machine (2002-12-10),
Company Overview
Denyo Co., Ltd. is a leading manufacturer of power generators, welding equipment, and air compressors. With a focus on innovation and high-quality products, Denyo has been providing reliable solutions for various industries worldwide. The company has a strong presence in the construction, mining, and manufacturing sectors, offering a wide range of products to meet the diverse needs of its customers.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

9 Patents

#2,022 in Tokyo

#4,704 in Japan

Tokyo, JP
Tokyo, Japan

Denyo Co., Ltd.

Forward Citations = 239

15 inventors:

goldMedal Masao Yamada (4 out of 4 patents)

silverMedal Kentaro Kawabata (2 out of 2 patents)

bronzeMedal Susumu Torii (2 out of 2 patents)

4.  Chiaki Murata (2 out of 10 patents)

5.  Akira Imayoshi (2 out of 2 patents)

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