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Daidousanso Co., Ltd.

USPTO Granted Patents = 41

Forward Citations = 395

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15 inventors (with patents filed for the assignee):

Akira Yoshino (27 out of 31 patents)

Kenzo Kitano (18 out of 23 patents)

Masaaki Tahara (17 out of 21 patents)

4. Teruo Minato (16 out of 18 patents)

5. Haruo Senbokuya (16 out of 20 patents)

6. Takakazu Tomoda (6 out of 6 patents)

7. Tadashi Hayashida (5 out of 9 patents)

8. Kenji Okumura (4 out of 4 patents)

9. Hiromi Kiyama (3 out of 6 patents)

10. Yoshinori Ohmori (3 out of 4 patents)

11. Toshiharu Ohnishi (3 out of 3 patents)

12. Hidehiko Oku (2 out of 2 patents)

13. Masaki Tahara (1 out of 1 patent)

14. Massaki Tahara (1 out of 1 patent)

15. Nobuhiko Mihoichi (1 out of 1 patent)

Core Competencies:

Nitriding Steel

Vacuum Insulation

Semiconductor Production

Austenitic Stainless Steel

Gas Treatment Apparatus

Nickel Alloy Manufacturing

Heat Insulation

Titanium Materials

41 patents: Sort by Forward Citations

1. 6179932 - Motor rotary shaft and manufacturing method thereof (2001-01-30),

2. 6020025 - Method of manufacturing a crank shaft (2000-02-01),

3. 5508106 - Method of vacuum insulation and a vacuum heat insulator used therein (1996-04-16),

4. 5505791 - Process of producing nitrided and hardened nickel alloy products (1996-04-09),

5. 5494740 - Method of high vacuum heat insulation and a vacuum heat insulator used (1996-02-27),

6. 5460875 - Hard austenitic stainless steel screw and a method for manufacturing the (1995-10-24),

7. 5445683 - Nickel alloy products with their surfaces nitrided and hardened (1995-08-29),

8. 5426998 - Crank shaft and method of manufacturing the same (1995-06-27),

9. 5419948 - Hard austenitic stainless steel screw and a method for manufacturing the (1995-05-30),

10. 5417776 - Hard austenitic stainless steel screw (1995-05-23),

11. 5403409 - Nitrided stainless steel products (1995-04-04),

12. 5401473 - Method and apparatus for treatment of NF.sub.3 gas (1995-03-28),

13. 5399211 - Method of plating steel (1995-03-21),

14. 5399199 - Apparatus for gas source molecular beam epitaxy (1995-03-21),

15. 5382318 - Hard austenitic stainless steel screw and a method for manufacturing the (1995-01-17),

Company Overview

Daidousanso Co., Ltd., based in Osaka, Japan, specializes in advanced manufacturing technologies, focusing on motor rotary shafts and crank shafts. The company is recognized for its expertise in vacuum insulation and the production of components using nitrided nickel alloy and austenitic stainless steel. Additionally, Daidousanso is involved in gas source molecular beam epitaxy and the development of heat insulation pipes, catering to the semiconductor production industry and enhancing thermal management solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

41 Patents

#210 in Osaka

#1,943 in Japan

#16,706 in the World

Daidousanso Co., Ltd.

Forward Citations = 395

15 inventors:

Akira Yoshino (27 out of 31 patents)

Kenzo Kitano (18 out of 23 patents)

Masaaki Tahara (17 out of 21 patents)

4. Teruo Minato (16 out of 18 patents)

5. Haruo Senbokuya (16 out of 20 patents)

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