For the Inventor, By the Inventor

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Sanyo Machine Works, Ltd.

USPTO Granted Patents = 33

% Expired Patents = 3.0

CIPO Patents = 1

EPO Patents = 6

Trademarks = 1

Forward Citations = 239

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38 inventors (with patents filed for the assignee):

Tatsuya Ishikawa (4 out of 4 patents)

Hisashi Ryota (3 out of 3 patents)

Katsuo Tokida (3 out of 3 patents)

4. Katsuhiko Asai (3 out of 3 patents)

5. Masatoshi Ohshima (3 out of 3 patents)

6. Hiroyuki Kitoh (3 out of 3 patents)

7. Hiroshi Hashimoto (3 out of 3 patents)

8. Kinya Mori (3 out of 3 patents)

9. Yoshiaki Takagi (2 out of 2 patents)

10. Akira Kato (2 out of 46 patents)

11. Koichi Ishihara (2 out of 2 patents)

12. Yoshihide Aoki (2 out of 2 patents)

13. Koji Ochiai (2 out of 2 patents)

14. Juzo Saijo (2 out of 2 patents)

15. Masazumi Miyago (1 out of 2 patents)

Core Competencies:

Nut Runner

Tightening Machine

Screw Fastening

Adhesive Inspection

Valve Clearance

Fastening Management

Swash Plate Machine

Hemming Process

Optical Measurement

Three Dimensional Measurement

Piston Assembly

Connecting Rod

33 patents: Sort by Forward Citations

1. 12447593 - Nut runner control system has a tightener that is provided with marker and camera remotely images the marker to detect position of the tightener (2025-10-21),

2. 12000713 - Tightening machine (2024-06-04),

3. 11344982 - Screw fastening device and screw fastening method (2022-05-31),

4. 11015915 - Adhesive inspection device and adhesive inspection method (2021-05-25),

5. 10612426 - Valve clearance adjusting method (2020-04-07),

6. 10048671 - Control device, control method, and control program (2018-08-14),

7. 9279678 - Prepreg pasting state inspection apparatus (2016-03-08),

8. 9205544 - Fastening part tightening management system (2015-12-08),

9. 9140248 - Method and device for assembling swash plate-type fluid machine (2015-09-22),

10. 9115704 - Method and device for assembling swash plate-type fluid machine (2015-08-25),

11. 8695191 - Method and device for assembling swash plate-type fluid machine (2014-04-15),

12. 8646159 - Device and method for assembling retainer and cotter (2014-02-11),

13. 8418333 - Method and device for assembling swash plate-type fluid machine (2013-04-16),

14. 6528176 - Structure of hemmed together metal plate materials (2003-03-04),

15. 6432229 - Method and apparatus for monitoring work heating temperature in flame hardening (2002-08-13),

Sanyo Machine Works, Ltd. is a prominent manufacturer based in Aichi, Japan, specializing in the development and production of precision machinery and equipment. The company focuses on various sectors, including automotive, industrial machinery, and electronics, providing innovative solutions tailored to meet the evolving needs of its clients. With a commitment to quality and technological advancement, Sanyo Machine Works plays a significant role in enhancing manufacturing processes and operational efficiency across multiple industries.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

33 Patents

#48 in Aichi

#2,201 in Japan

#20,130 in the World

Sanyo Machine Works, Ltd.

Forward Citations = 239

38 inventors:

Tatsuya Ishikawa (4 out of 4 patents)

Hisashi Ryota (3 out of 3 patents)

Katsuo Tokida (3 out of 3 patents)

4. Katsuhiko Asai (3 out of 3 patents)

5. Masatoshi Ohshima (3 out of 3 patents)

Please report any incorrect information to [email protected]

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