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Hitachi Tool Engineering, Ltd.

USPTO Granted Patents = 26

% Expired Patents = 19.2

EPO Patents = 17

Trademarks = 1

Forward Citations = 272

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37 inventors (with patents filed for the assignee):

Kazuyuki Kubota (6 out of 10 patents)

Yoshimitsu Nagashima (4 out of 5 patents)

Katsutoshi Maeda (4 out of 5 patents)

4. Takeshi Ishikawa (3 out of 4 patents)

5. Yuuzoh Fukunaga (2 out of 6 patents)

6. Gang Han (2 out of 2 patents)

7. Yuichi Nakahara (2 out of 4 patents)

8. Takahito Kuroda (2 out of 2 patents)

9. Ryosuke Okanishi (2 out of 2 patents)

10. Nobuhiko Shima (2 out of 4 patents)

11. Yusuke Iyori (2 out of 2 patents)

12. Katsuhiko Kojo (2 out of 8 patents)

13. Kenichi Inoue (1 out of 47 patents)

14. Yoshiyuki Kobayashi (1 out of 18 patents)

15. Yasuhiro Kiuchi (1 out of 10 patents)

26 patents: Sort by Forward Citations

1. 9868162 - Machining head, holder and exchangeable tip cutting tool (2018-01-16),

2. 9868161 - Ball-end mill and insert (2018-01-16),

3. 9534292 - Hard-coated tool and its production method (2017-01-03),

4. 9527141 - Negative cutting insert, and indexable rotary cutting tool, indexable rotary cutting tool system and cutting method using such cutting insert (2016-12-27),

5. 9492872 - Surface-modified, WC-based cemented carbide member, hard-coated, WC-based cemented carbide member, and their production methods (2016-11-15),

6. 9421624 - End mill for cutting of high-hardness materials (2016-08-23),

7. 9228258 - Hard-coated member and its production method, and indexable rotary tool comprising it (2016-01-05),

8. 8827600 - Carbide end mill and cutting method using the end mill (2014-09-09),

9. 8585329 - Ball end mill (2013-11-19),

10. 8304098 - Hard-coated member, and its production method (2012-11-06),

11. 7909549 - Small-diameter deep hole drill and a micro deep hole drilling method (2011-03-22),

12. 7661912 - Tool having damper (2010-02-16),

13. 7537822 - Hard-coated member (2009-05-26),

14. 7435487 - Hard film and hard film-coated tool (2008-10-14),

15. 7368182 - Hard coating and its formation method, and hard-coated tool (2008-05-06),

Hitachi Tool Engineering, Ltd. is a leading Japanese manufacturing company specializing in the production of high-quality tools and equipment. With a rich history of innovation and over several decades of expertise in the industry, their products are known for their reliability, precision, and superior performance. From power tools to industrial machinery, Hitachi Tool Engineering offers a wide range of solutions that cater to diverse customer needs. Their commitment to technological advancement and customer satisfaction has made them a trusted brand worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

26 Patents

#1,162 in Tokyo

#2,503 in Japan

#24,735 in the World

Hitachi Tool Engineering, Ltd.

Forward Citations = 272

37 inventors:

Kazuyuki Kubota (6 out of 10 patents)

Yoshimitsu Nagashima (4 out of 5 patents)

Katsutoshi Maeda (4 out of 5 patents)

4. Takeshi Ishikawa (3 out of 4 patents)

5. Yuuzoh Fukunaga (2 out of 6 patents)

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