For the Inventor, By the Inventor

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Big Daishowa Seiki Co., Ltd.

USPTO Granted Patents = 9

EPO Patents = 5

Forward Citations = 29

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18 inventors (with patents filed for the assignee):

Kouichi Uemura (3 out of 4 patents)

Masataka Yauchi (3 out of 5 patents)

Reina Oohashi (3 out of 4 patents)

4. Shunsuke Kumasaki (3 out of 4 patents)

5. Akihito Funashoku (3 out of 4 patents)

6. Yukio Tsujita (3 out of 3 patents)

7. Masayuki Doi (2 out of 5 patents)

8. Hideo Maeno (1 out of 16 patents)

9. Naoki Matsuda (1 out of 27 patents)

10. Naoki Maegawa (1 out of 2 patents)

11. Chikara Kimura (1 out of 1 patent)

12. Yoshihiro Kuroda (1 out of 7 patents)

13. Takafumi Takami (1 out of 1 patent)

14. Junichi Koyama (1 out of 1 patent)

15. Masahiro Sasano (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 12248295 - System for adjusting balance and runout of rotary tool, device for determining the balance and runout, method of adjusting the balance and runout, and tool holder (2025-03-11),

2. 12210332 - System for adjusting balance and runout of rotary tool, device for determining the balance and runout, method of adjusting the balance and runout, and tool holder (2025-01-28),

3. 12032351 - System for adjusting balance and runout of rotary tool, device for determining the balance and runout, method of adjusting the balance and runout, and tool holder (2024-07-09),

4. 11255654 - Misalignment determining device (2022-02-22),

5. 11040404 - Cutting insert and boring tool (2021-06-22),

6. 10967471 - Chuck device (2021-04-06),

7. 9676039 - Tool holder (2017-06-13),

8. 7240845 - Information-holding unit (2007-07-10),

9. 6851897 - Cutting tool insert and cutting tool (2005-02-08),

Big Daishowa Seiki Co., Ltd. is a leading manufacturer of high-precision tooling systems for the metalworking industry. Established in 1963, the company is known for its innovative products that improve productivity and accuracy in machining operations. Big Daishowa's extensive product line includes tool holders, boring tools, cutting tools, and measuring instruments. With a commitment to quality and customer satisfaction, Big Daishowa serves customers worldwide and continues to drive innovation in the field of metalworking.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

9 Patents

#430 in Osaka

#4,576 in Japan

Big Daishowa Seiki Co., Ltd.

Forward Citations = 29

18 inventors:

Kouichi Uemura (3 out of 4 patents)

Masataka Yauchi (3 out of 5 patents)

Reina Oohashi (3 out of 4 patents)

4. Shunsuke Kumasaki (3 out of 4 patents)

5. Akihito Funashoku (3 out of 4 patents)

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