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For the Inventor, By the Inventor

Tokyo, Japan

Mitsubishi Hitachi Tool Engineering, Ltd.


USPTO Granted Patents = 38

% Expired Patents = 2.6



Trademarks = 3

Forward Citations = 285

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43 inventors (with patents filed for the assignee):

goldMedal Yoshiyuki Kobayashi (15 out of 19 patents)

silverMedal Yasuhiro Kiuchi (8 out of 10 patents)

bronzeMedal Hayato Takahashi (7 out of 15 patents)

4.  Hisanori Mura (4 out of 5 patents)

5.  Kenji Nagafuchi (4 out of 5 patents)

6.  Shoujirou Touma (4 out of 4 patents)

7.  Takao Nakamigawa (3 out of 3 patents)

8.  Fumihiko Inagaki (3 out of 4 patents)

9.  Makoto Baba (3 out of 5 patents)

10.  Kenichi Inoue (2 out of 47 patents)

11.  Mitsuhiro Yokokawa (2 out of 5 patents)

12.  Shinya Matsuo (2 out of 15 patents)

13.  Tomoya Sasaki (2 out of 13 patents)

14.  Yuuzoh Fukunaga (2 out of 6 patents)

15.  Yuuki Hayashi (2 out of 3 patents)


Core Competencies:
Cutting Insert
Rotary Cutting Tool
End Mill
Hard Coating
Multi-Flute
Ceramic End Mill
Wear Resistance
Indexable Tool
Ball End Mill
Drill
Coated Tool
Production Methods

38 patents:

1. 10940553 - Screw thread cutter (2021-03-09),
2. D908752 - Cutting insert (2021-01-26),
3. D907671 - Cutting insert (2021-01-12),
4. D907670 - Cutting insert (2021-01-12),
5. 10850335 - Cutting insert and cutting edge-interchangeable rotary cutting tool (2020-12-01),
6. 10799956 - Indexable rotary cutting tool and insert (2020-10-13),
7. 10767258 - Hard titanium aluminum nitride coating, hard-coated tool, and their production methods (2020-09-08),
8. D894982 - Cutting insert (2020-09-01),
9. 10688570 - Indexable rotary cutting tool and insert (2020-06-23),
10. 10626493 - Method for producing a double-layer coated cutting tool with improved wear resistance (2020-04-21),
11. D872784 - Cutting insert for a rotary cutting machine tool (2020-01-14),
12. 10512976 - Cutting insert and indexable rotary cutting tool (2019-12-24),
13. 10507535 - Cutting insert and indexable rotary cutting tool (2019-12-17),
14. 10350689 - Double-sided circular cutting insert and indexable rotary cutting tool (2019-07-16),
15. D852246 - Cutting insert (2019-06-25),
Company Overview
Mitsubishi Hitachi Tool Engineering, Ltd. specializes in the development and manufacturing of cutting tools and precision machining equipment. The company focuses on advanced technologies that enhance productivity and efficiency in various industrial applications. With a strong emphasis on innovation, Mitsubishi Hitachi Tool Engineering is committed to providing high-quality solutions that meet the evolving needs of the manufacturing sector. Headquartered in Tokyo, Japan, the company plays a significant role in the global market for industrial tools.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

38 Patents

#950 in Tokyo

#2,026 in Japan

#17,860 in the World

Tokyo, JP
Tokyo, Japan

Mitsubishi Hitachi Tool Engineering, Ltd.

Forward Citations = 285

43 inventors:

goldMedal Yoshiyuki Kobayashi (15 out of 19 patents)

silverMedal Yasuhiro Kiuchi (8 out of 10 patents)

bronzeMedal Hayato Takahashi (7 out of 15 patents)

4.  Hisanori Mura (4 out of 5 patents)

5.  Kenji Nagafuchi (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mitsubishi Hitachi Tool Engineering, Ltd.. Retrieved from https://idiyas.com/company/mitsubishi-hitachi-tool-engineering

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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