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For the Inventor, By the Inventor

Yokohama, Japan

Tohru Shiraishi

This inventor holds 9 USPTO granted patents and 8 EPO patents. Top assignees: Nhk Spring Co., Ltd., Other. Active years: 2002-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tohru Shiraishi. Retrieved from https://idiyas.com/inventor/tohru-shiraishi

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

Calculating rank
USPTO Granted Patents = 9

% Patents Active = 22.2

 

Average Co-Inventor Count = 3.3

ph-index = 2

Forward Citations = 8(Granted Patents)


Location History:

  • Kanagawa, JP (2004)
  • Yokohama, JP (2002 - 2019)

Company Filing History:

goldMedal8 out of 1,234 
 
Nhk Spring Co., Ltd.
 patents
silverMedal1 out of 834,570 
Other
 patents

Years Active: 2002-2019

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9 patents (USPTO):Explore Patents
1. 10359090 - Compression coil spring and method for producing same (2019-07-23),
2. 10350681 - Titanium alloy member and production method therefor (2019-07-16),
3. 10151019 - High-strength titanium alloy member and production method for same (2018-12-11),
4. 10052677 - Spring forming device and forming method therefor (2018-08-21),
5. 9920403 - Magnesium alloy member and production method therefor (2018-03-20),
6. 9920399 - Titanium alloy member and production method therefor (2018-03-20),
7. 9752636 - Helical compression spring and method for manufacturing same (2017-09-05),
8. 6814043 - Structure of bearing housing of cylinder block (2004-11-09),
9. 6432557 - Metal matrix composite and piston using the same (2002-08-13),

Title: Tohru Shiraishi: Innovator in Spring and Titanium Alloy Technologies

Introduction

Tohru Shiraishi is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the fields of mechanical engineering and materials science, holding a total of nine patents. His work focuses on enhancing the durability and performance of various mechanical components.

Latest Patents

One of Shiraishi's latest patents is for a compression coil spring and method for producing the same. This invention provides a compression coil spring with high durability, utilizing an inexpensive wire material. The spring is formed from a steel wire material with specific compositions, ensuring optimal hardness and residual stress characteristics. Another notable patent involves a high-strength titanium alloy member with superior fatigue resistance. The production method includes nitriding a titanium alloy raw material to enhance its properties, followed by sintering and surface treatment to achieve desired performance metrics.

Career Highlights

Throughout his career, Tohru Shiraishi has worked with notable companies, including NHK Spring Co., Ltd. His experience in the industry has allowed him to develop innovative solutions that address the needs of modern engineering applications.

Collaborations

Shiraishi has collaborated with talented individuals such as Yoshiki Ono and Yuji Araoka, contributing to the advancement of technology in his field.

Conclusion

Tohru Shiraishi's innovative work in the development of compression coil springs and titanium alloy members showcases his expertise and commitment to engineering excellence. His contributions continue to influence the industry and inspire future innovations.

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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