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For the Inventor, By the Inventor

Fukushima, Japan

Tungaloy Corporation


USPTO Granted Patents = 249

% Expired Patents = 1.6



Trademarks = 7

Forward Citations = 457

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104 inventors (with patents filed for the assignee):

goldMedal Ryuichi Saji (28 out of 28 patents)

silverMedal Satoru Yoshida (17 out of 17 patents)

bronzeMedal Takahiro Aso (16 out of 16 patents)

4.  Yusuke Hirano (15 out of 15 patents)

5.  Hiroyuki Satoh (12 out of 86 patents)

6.  Naoyuki Fukushima (11 out of 11 patents)

7.  Takao Katagiri (11 out of 11 patents)

8.  Yasutake Sasaki (9 out of 9 patents)

9.  Hiroya Shikama (9 out of 9 patents)

10.  Yusuke Suzuki (9 out of 9 patents)

11.  Yuki Oikawa (8 out of 8 patents)

12.  Shigeki Tanaka (8 out of 8 patents)

13.  Kedar Suresh Bhagath (8 out of 8 patents)

14.  Hikaru Shiroma (6 out of 6 patents)

15.  Kinya Takahashi (6 out of 6 patents)


Core Competencies:
Coated Cutting Tool
Cubic Boron Nitride
Cutting Insert
Drilling Tool
Milling Tool
Indexable Cutting Tool
Gun Drill
Friction Material
Tool Body
Rotary Cutting Tool
Turning Tool
Brake Pad

249 patents:

1. 12741324 - Drilling tool (2026-09-22),
2. 12723005 - Cubic boron nitride sintered body and coated cubic boron nitride sintered body (2026-09-01),
3. 12703025 - Turning tool (2026-08-11),
4. 12691507 - Drill body and manufacturing method of drill body (2026-07-28),
5. 12678864 - Cutting insert (2026-07-14),
6. 12661725 - Cutting insert (2026-06-23),
7. 12661716 - Blade (2026-06-23),
8. 12643155 - Tool head in head replaceable cutting tool (2026-06-02),
9. 12643153 - Cutting tool (2026-06-02),
10. 12605775 - Body for gun drill (2026-04-21),
11. 12594607 - Coated cutting tool (2026-04-07),
12. 12534412 - Cubic boron nitride sintered body and coated cubic boron nitride sintered body (2026-01-27),
13. 12502716 - Cutting insert and turning tool (2025-12-23),
14. 12479772 - Cubic boron nitride sintered body and coated cubic boron nitride sintered body (2025-11-25),
15. 12459148 - Cutting tool (2025-11-04),
Tungaloy Corporation, headquartered in Fukushima, Japan, specializes in the development and manufacturing of cutting tools. The company is renowned for its innovative solutions in various domains, including coated cutting tools, cubic boron nitride, and indexable cutting tools. Tungaloy's product offerings encompass drilling tools, milling tools, and gun drills, catering to a diverse range of industries. With a strong focus on advanced materials and technologies, Tungaloy continues to enhance machining efficiency and precision in manufacturing processes.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Tungaloy Corporation
249 Patents

#2 in Fukushima

#610 in Japan

#3,489 in the World

Fukushima, JP
Fukushima, Japan

Tungaloy Corporation

Forward Citations = 457

104 inventors:

goldMedal Ryuichi Saji (28 out of 28 patents)

silverMedal Satoru Yoshida (17 out of 17 patents)

bronzeMedal Takahiro Aso (16 out of 16 patents)

4.  Yusuke Hirano (15 out of 15 patents)

5.  Hiroyuki Satoh (12 out of 86 patents)

Please report any incorrect information to [email protected]
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