logo

For the Inventor, By the Inventor

Tokyo, Japan

Union Tool Company


USPTO Granted Patents = 13

% Expired Patents = 15.4


Trademarks = 1

Forward Citations = 43

Loading Chart...
Loading Chart...

25 inventors (with patents filed for the assignee):

goldMedal Shoichi Takahashi (4 out of 10 patents)

silverMedal Ichiro Katayama (4 out of 4 patents)

bronzeMedal Hidehito Watanabe (3 out of 3 patents)

4.  Hideki Osaki (2 out of 2 patents)

5.  Shuntaro Suzuki (2 out of 2 patents)

6.  Ryo Shinozaki (2 out of 2 patents)

7.  Hideo Wakui (2 out of 2 patents)

8.  Yoshiharu Shinbo (2 out of 2 patents)

9.  Yuji Watanabe (1 out of 75 patents)

10.  Sonoko Ishimaru (1 out of 6 patents)

11.  Mariko Matsui (1 out of 2 patents)

12.  Nozomu Sato (1 out of 3 patents)

13.  Madoka Nitta (1 out of 1 patent)

14.  Taishi Matsui (1 out of 1 patent)

15.  Naoki Jinbo (1 out of 1 patent)


13 patents:

1. 11780018 - Rotary cutting tool (2023-10-10),
2. 10183346 - Rotary milling tool (2019-01-22),
3. 9868160 - Hard-coated cutting tool (2018-01-16),
4. 9833162 - Atrial fibrillation detection system (2017-12-05),
5. 9545205 - Dozing prevention method, and dozing prevention device (2017-01-17),
6. 9061397 - Diamond film for cutting-tools (2015-06-23),
7. 8961078 - Rotary cutting tool (2015-02-24),
8. 8186914 - Rotary cutting tool (2012-05-29),
9. 7354229 - Drill (2008-04-08),
10. 6613999 - Method of joining a sintered hard alloy member to a stainless steel member and method of making a cutting tool therefrom (2003-09-02),
11. 6331133 - Automatic drill bit re-pointing apparatus and method (2001-12-18),
12. 6260701 - Drill bit case with re-configurable shank retainer and stand base (2001-07-17),
13. 4837432 - Optical measuring apparatus which employs two synchronously rotating (1989-06-06),
Company Overview
Union Tool Company, headquartered in Tokyo, specializes in the development and manufacturing of cutting tools and precision machinery. The company is renowned for its innovative solutions in the fields of metalworking and industrial applications, focusing on high-performance tools that enhance productivity and efficiency. With a commitment to quality and technological advancement, Union Tool serves a diverse range of industries, contributing to advancements in manufacturing processes and precision engineering across the globe.
Profile summary synthesized from public USPTO records and patent filings.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

13 Patents

#1,660 in Tokyo

#3,747 in Japan

#44,988 in the World

Tokyo, JP
Tokyo, Japan

Union Tool Company

Forward Citations = 43

25 inventors:

goldMedal Shoichi Takahashi (4 out of 10 patents)

silverMedal Ichiro Katayama (4 out of 4 patents)

bronzeMedal Hidehito Watanabe (3 out of 3 patents)

4.  Hideki Osaki (2 out of 2 patents)

5.  Shuntaro Suzuki (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Union Tool Company. Retrieved from https://idiyas.com/company/union-tool-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]
Loading…