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For the Inventor, By the Inventor

Ishikawa, Japan

Daido Kogyo Co., Ltd.

Calculating rank
USPTO Granted Patents = 50

% Expired Patents = 20.0


Trademarks = 10

Forward Citations = 238

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89 inventors (with patents filed for the assignee):

goldMedal Hideaki Seki (6 out of 6 patents)

silverMedal Akiyoshi Komeya (5 out of 5 patents)

bronzeMedal Motoki Tanaka (4 out of 4 patents)

4.  Toshiyuki Majima (4 out of 4 patents)

5.  Kazuo Nishimura (4 out of 4 patents)

6.  Yoshio Okumura (3 out of 3 patents)

7.  Nobuyuki Matsui (3 out of 3 patents)

8.  Takuma Ono (3 out of 3 patents)

9.  Daigo Masumoto (3 out of 3 patents)

10.  Kohei Hayashi (3 out of 3 patents)

11.  Shuji Takahashi (2 out of 57 patents)

12.  Kazuhito Hiraoka (2 out of 3 patents)

13.  Hiroki Nakagawa (2 out of 2 patents)

14.  Yoshio Yamada (2 out of 23 patents)

15.  Takao Kobayashi (2 out of 71 patents)


Core Competencies:
Chain Tensioner
Chain Measurement Device
Silent Chain
Planetary Gear
Drive Chain
Spoke Wheel
Wear-Resistant Chain
Vacuum Conveyor Chain
Paper Cutting Device
Vehicle Wheel
Power Transmission Chain
Tire Rim Structure

50 patents:

1. D1098997 - Hub of vehicle wheel (2025-10-21),
2. D1098996 - Hub of vehicle wheel (2025-10-21),
3. 12339187 - Chain measurement device, chain measurement system, and method for calculating slack amount of chain (2025-06-24),
4. 12313150 - Planetary gear device (2025-05-27),
5. D1040668 - Drive chain measuring tool (2024-09-03),
6. 11988282 - Chain tensioner (2024-05-21),
7. 11927267 - Chain guide and chain transmission device using same (2024-03-12),
8. 11927244 - Chain transmission device (2024-03-12),
9. 11898635 - Tensioner (2024-02-13),
10. 11415196 - Roller chain (2022-08-16),
11. 11396205 - Spoke wheel (2022-07-26),
12. 11199247 - Winding transmission body tension device (2021-12-14),
13. 10850925 - Chain for vacuum conveyor (2020-12-01),
14. 10794455 - Tensioner (2020-10-06),
15. 10443686 - Chain and manufacturing method of a chain (2019-10-15),
Company Overview
Daido Kogyo Co., Ltd., headquartered in Ishikawa, Japan, specializes in advanced chain technology. The company develops and manufactures a diverse range of products, including chain tensioners, chain measurement devices, and silent chains, catering to various industrial applications. With a strong focus on innovation, Daido Kogyo also explores technologies related to planetary gears, drive chains, spoke wheels, wear-resistant chains, and vacuum conveyor chains, positioning itself as a key player in the global chain manufacturing sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Daido Kogyo Co., Ltd. USPTO Patent Assignee Logo
50 Patents

#7 in Ishikawa

#1,711 in Japan

#14,028 in the World

Ishikawa, JP
Ishikawa, Japan

Daido Kogyo Co., Ltd.

Forward Citations = 238

89 inventors:

goldMedal Hideaki Seki (6 out of 6 patents)

silverMedal Akiyoshi Komeya (5 out of 5 patents)

bronzeMedal Motoki Tanaka (4 out of 4 patents)

4.  Toshiyuki Majima (4 out of 4 patents)

5.  Kazuo Nishimura (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Daido Kogyo Co., Ltd.. Retrieved from https://idiyas.com/company/daido-kogyo-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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