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For the Inventor, By the Inventor

Aichi, Japan

Kyokutoh Company

Calculating rank
USPTO Granted Patents = 25

% Expired Patents = 12.0



Forward Citations = 59

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13 inventors (with patents filed for the assignee):

goldMedal Kotaro Nakajima (11 out of 11 patents)

silverMedal Kazuhiro Tezawa (8 out of 8 patents)

bronzeMedal Kotaro Nakazima (2 out of 2 patents)

4.  Toshimasa Yamane (1 out of 6 patents)

5.  Kenji Sogo (1 out of 1 patent)

6.  Yoshiaki Yamane (1 out of 2 patents)

7.  Seiji Ishikawa (1 out of 1 patent)

8.  Hirokazu Kusano (1 out of 2 patents)

9.  Takanori Niwa (1 out of 1 patent)

10.  Matzoka Masanori (1 out of 1 patent)

11.  Tezawa Kazuhiro (1 out of 1 patent)

12.  Takashi Kimura (1 out of 7 patents)

13.  Kaneyasu Arakawa (1 out of 1 patent)

14.  Werner Kaeseler (11 patents)


Core Competencies:
Tip Dresser
Spot Welding
Electrode Inspection
Welding Robots
Electrode Housing
Air Blow Nozzle
Tip Shaping
Nugget Detection
Cutting Cutter
Chip-Scattering Prevention
Electrode Removal
Rotary Work Device

25 patents:

1. 12420353 - Air blow nozzle and tip dresser equipped with air blow nozzle (2025-09-23),
2. 12420352 - Tip dresser (2025-09-23),
3. 12036622 - Spot-welding electrode inspection device (2024-07-16),
4. 11878357 - Tip dressing cutter (2024-01-23),
5. 11491518 - Air intake and blowout tool (2022-11-08),
6. 11338403 - Chip-scattering prevention cover (2022-05-24),
7. 11117211 - Spot welding electrode housing apparatus (2021-09-14),
8. 10894298 - Electrode tip removal device and hammer (2021-01-19),
9. 10717149 - Cutting cutter for tip dressing, and tip dresser (2020-07-21),
10. 10137524 - Spot welding electrode housing apparatus (2018-11-27),
11. 10016835 - Method for grinding electrode tip (2018-07-10),
12. 9770779 - Tip dressing cutter (2017-09-26),
13. 9707639 - Tip dresser (2017-07-18),
14. 9505080 - Rotary work device (2016-11-29),
15. 9497360 - Electrode inspection apparatus for spot welding (2016-11-15),
Company Overview
Kyokutoh Company, based in Aichi, Japan, specializes in the development and manufacturing of advanced industrial machinery and equipment. The company focuses on providing innovative solutions tailored to various sectors, including automotive and manufacturing industries. With a commitment to enhancing productivity and efficiency, Kyokutoh leverages cutting-edge technology and engineering expertise to meet the evolving needs of its clients, contributing to the advancement of industrial processes and automation.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Kyokutoh Company USPTO Patent Assignee Logo
25 Patents

#54 in Aichi

#2,572 in Japan

#25,748 in the World

Aichi, JP
Aichi, Japan

Kyokutoh Company

Forward Citations = 59

13 inventors:

goldMedal Kotaro Nakajima (11 out of 11 patents)

silverMedal Kazuhiro Tezawa (8 out of 8 patents)

bronzeMedal Kotaro Nakazima (2 out of 2 patents)

4.  Toshimasa Yamane (1 out of 6 patents)

5.  Kenji Sogo (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kyokutoh Company. Retrieved from https://idiyas.com/company/kyokutoh-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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