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For the Inventor, By the Inventor

Toyokawa, Japan

Osg Corporation


USPTO Granted Patents = 133

% Expired Patents = 18.8


Trademarks = 21

Forward Citations = 765

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122 inventors (with patents filed for the assignee):

goldMedal Jiro Osawa (21 out of 21 patents)

silverMedal Masatoshi Sakurai (11 out of 11 patents)

bronzeMedal Tasuku Itoh (10 out of 10 patents)

4.  Mei Wang (9 out of 9 patents)

5.  Takayuki Nakajima (9 out of 9 patents)

6.  Hiroaki Sugita (8 out of 8 patents)

7.  Yasuyuki Endoh (8 out of 8 patents)

8.  Hiroyuki Hanyu (7 out of 7 patents)

9.  Takaomi Toihara (7 out of 7 patents)

10.  Takahiro Yamamoto (6 out of 7 patents)

11.  Kazumitsu Harada (6 out of 6 patents)

12.  Tomonori Yoda (6 out of 6 patents)

13.  Takayuki Matsushita (6 out of 6 patents)

14.  Wataru Aoki (6 out of 7 patents)

15.  Tamotsu Nagai (5 out of 5 patents)


Core Competencies:
Thread Forming Tap
Rotary Cutting Tool
Cutting Insert
Hard Coating
Drill
Indexable Tool
Tapered End Mill
Reamer
Plastic Deformation Tool
Hard Film
Throwaway Tool
DLC-Coated Tool

133 patents:

1. 12728467 - Drill (2026-09-08),
2. 12703030 - End mill (2026-08-11),
3. 12649191 - Drill (2026-06-09),
4. 12447542 - Method for chamfering toothed gear (2025-10-21),
5. 12162084 - Rotary cutting tool (2024-12-10),
6. 12097564 - Ball end mill and cutting insert (2024-09-24),
7. 12042873 - Thread forming tap (2024-07-23),
8. 12023719 - Rolling die and method for manufacturing same (2024-07-02),
9. 11986905 - Diamond smoothing method (2024-05-21),
10. 11986896 - Thread forming tap (2024-05-21),
11. 11865626 - Drill (2024-01-09),
12. 11826844 - Thread forming tap for ballscrew (2023-11-28),
13. 11623286 - Tapered end mill (2023-04-11),
14. 11453072 - Thread milling cutter (2022-09-27),
15. 11447875 - Hard coating and hard-coating-covered member (2022-09-20),
Osg Corporation, headquartered in Toyokawa, Japan, specializes in the development and manufacturing of cutting tools. The company is recognized for its expertise in various core technology areas, including thread forming taps, rotary cutting tools, and cutting inserts. Osg also focuses on advanced hard coating technologies and produces a range of precision tools such as drills, indexable tools, tapered end mills, and reamers. With a commitment to innovation, Osg serves diverse industries, enhancing machining efficiency and precision globally.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Osg Corporation
133 Patents

#1 in Toyokawa

#932 in Japan

#6,056 in the World

Toyokawa, JP
Toyokawa, Japan

Osg Corporation

Forward Citations = 765

122 inventors:

goldMedal Jiro Osawa (21 out of 21 patents)

silverMedal Masatoshi Sakurai (11 out of 11 patents)

bronzeMedal Tasuku Itoh (10 out of 10 patents)

4.  Mei Wang (9 out of 9 patents)

5.  Takayuki Nakajima (9 out of 9 patents)

Please report any incorrect information to [email protected]
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