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For the Inventor, By the Inventor

Toyokawa, Japan

Osg Corporation

Calculating rank
USPTO Granted Patents = 135

% Expired Patents = 18.5


Trademarks = 21

Forward Citations = 778

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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 Takayuki Nakajima (10 out of 10 patents)

4.  Tasuku Itoh (10 out of 10 patents)

5.  Mei Wang (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

135 patents:

1. 12766613 - Ball end mill and cutting insert (2026-10-20),
2. 12759100 - Nitrided cut tap and production method therefor (2026-10-13),
3. 12728467 - Drill (2026-09-08),
4. 12703030 - End mill (2026-08-11),
5. 12649191 - Drill (2026-06-09),
6. 12447542 - Method for chamfering toothed gear (2025-10-21),
7. 12162084 - Rotary cutting tool (2024-12-10),
8. 12097564 - Ball end mill and cutting insert (2024-09-24),
9. 12042873 - Thread forming tap (2024-07-23),
10. 12023719 - Rolling die and method for manufacturing same (2024-07-02),
11. 11986905 - Diamond smoothing method (2024-05-21),
12. 11986896 - Thread forming tap (2024-05-21),
13. 11865626 - Drill (2024-01-09),
14. 11826844 - Thread forming tap for ballscrew (2023-11-28),
15. 11623286 - Tapered end mill (2023-04-11),
Company Overview
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 synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Osg Corporation USPTO Patent Assignee Logo
135 Patents

#1 in Toyokawa

#920 in Japan

#5,992 in the World

Toyokawa, JP
Toyokawa, Japan

Osg Corporation

Forward Citations = 778

122 inventors:

goldMedal Jiro Osawa (21 out of 21 patents)

silverMedal Masatoshi Sakurai (11 out of 11 patents)

bronzeMedal Takayuki Nakajima (10 out of 10 patents)

4.  Tasuku Itoh (10 out of 10 patents)

5.  Mei Wang (9 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Osg Corporation. Retrieved from https://idiyas.com/company/osg

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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