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For the Inventor, By the Inventor

Kawasaki, Japan

Osamu Tsujimura

This inventor holds 20 USPTO granted patents, primarily in Cutting Tool Technology. Top assignees: Mitsubishi Kinzoku Kabushiki Kaisha, Mitsubishi Metal Corporation, Izumo Industrial Co., Ltd.. Active years: 1987-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Osamu Tsujimura. Retrieved from https://idiyas.com/inventor/osamu-tsujimura

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 20

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 14

Forward Citations = 423(Granted Patents)


Location History:

  • Shinagawa, JP (1989)
  • Kawasaki, JP (1987 - 1991)
  • Tokyo, JP (1987 - 1993)

Company Filing History:

goldMedal14 out of 197 
 
Mitsubishi Kinzoku Kabushiki Kaisha
 patents
silverMedal6 out of 68 
 
Mitsubishi Metal Corporation
 patents
bronzeMedal1 out of 2 
 
Izumo Industrial Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1987-1993

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Areas of Expertise:
Boring Bar Tool
Indexable Cutter Insert
Face Milling Cutter
Inserted Rotary Cutter
Ball End Mill
Insert Rotary Cutting Tool
Cutting Insert
End Mill
20 patents (USPTO):Explore Patents
1. 5261767 - Boring bar tool (1993-11-16),
2. 5156503 - Boring bar tool (1992-10-20),
3. 5017055 - Indexable cutter insert (1991-05-21),
4. 4966500 - Face milling cutter with cutter inserts (1990-10-30),
5. 4954021 - Inserted rotary cutter (1990-09-04),
6. D309317 - Ball end mill (1990-07-17),
7. D308874 - Ball end mill (1990-06-26),
8. 4934881 - Ball end mill (1990-06-19),
9. 4930945 - Insert rotary cutter (1990-06-05),
10. 4927303 - Ball end mill (1990-05-22),
11. 4919573 - Ball end mill (1990-04-24),
12. 4898499 - Ball end mill (1990-02-06),
13. 4883391 - Ball end mill (1989-11-28),
14. 4844669 - Insert boring tool and cutting insert therefor (1989-07-04),
15. 4844666 - Insert rotary cutting tool (1989-07-04),

Title: Osamu Tsujimura: Innovator in Boring Bar Tools

Introduction

Osamu Tsujimura is a renowned inventor based in Kawasaki, Japan. With a remarkable portfolio of 20 patents, he has made significant contributions to the field of machining tools. His innovations are aimed at enhancing efficiency and precision in manufacturing processes.

Latest Patents

Among his latest inventions is a groundbreaking boring bar tool. This tool features a unique design with a tool body that accommodates a tip mounted on one side of the forward end of the nose. Notably, a neck is formed at the proximal end of the nose, leading to a shank in the shape of a shaft at the neck’s proximal end. The neck possesses a cross-sectional area greater than that of the shank in a plane perpendicular to the axis of the shank. This innovative design allows for improved functionality in various machining applications.

Career Highlights

Osamu Tsujimura has held pivotal roles in prestigious companies such as Mitsubishi Kinzoku Kabushiki Kaisha and Mitsubishi Metal Corporation. His extensive experience in these organizations has allowed him to refine his skills as an inventor and to contribute to significant advancements in tool technology.

Collaborations

Throughout his career, Tsujimura has collaborated with esteemed colleagues, including Tatsuo Arai and Masayuki Okawa. Their combined efforts have sparked innovation within their field, leading to the development of new tools that address complex machining challenges.

Conclusion

Osamu Tsujimura's contributions to the field of boring bar tools and his impressive portfolio of patents highlight his dedication to innovation in manufacturing. His work continues to influence the industry, propelling advancements that enhance productivity and precision in machining processes.

Profile summary based on public USPTO records.
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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