Yasuharu Sakuma

This inventor holds 12 USPTO granted patents and 1 published patent application, plus 7 CIPO patents and 9 EPO patents. Top assignees: Nippon Steel Corporation, Nippon Steel Sumitomo Metal Corporation, Sony Corporation. Active years: 1997-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuharu Sakuma. Retrieved from https://idiyas.com/inventor/yasuharu-sakuma

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

USPTO Granted Patents = 12 (Patent Applications = 1)

% Patents Active = 91.7

CIPO Patents = 7

EPO Patents = 9 (Patent Applications = 7)

Average Co-Inventor Count = 5.8

ph-index = 5

Forward Citations = 68(Granted Patents)

Location History:

Kimitsu, JP (1997 - 2014)
Tokyo, JP (2012 - 2018)

Company Filing History:

9 out of 3,721

Nippon Steel Corporation

patents

3 out of 1,102

Nippon Steel Sumitomo Metal Corporation

where one patent can have more than one assignee

Years Active: 1997-2018

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10023947 - High strength steel plate with ultimate tensile strength of 900 MPa or more excellent in hydrogen embrittlement resistance and method of production of same (2018-07-17),

2. 8747577 - High yield ratio and high-strength thin steel sheet superior in weldability and ductility, high-yield ratio high-strength hot-dip galvanized thin steel sheet, high-yield ratio high-strength hot-dip galvannealed thin steel sheet, and methods of production of same (2014-06-10),

3. 8657970 - Hot-rolled steel sheet excellent in fatigue properties and stretch-flange formability and method for manufacturing the same (2014-02-25),

4. 8163108 - High-strength cold-rolled steel sheet, high-strength galvanized steel sheet, and high-strength alloyed hot-dip galvanized steel sheet having excellent formability and weldability, and methods for manufacturing the same (2012-04-24),

5. 8084143 - High-yield-ratio and high-strength thin steel sheet superior in weldability and ductility, high-yield-ratio high-strength hot-dip galvanized thin steel sheet, high-yield ratio high-strength hot-dip galvannealed thin steel sheet, and methods of production of same (2011-12-27),

6. 7413780 - High strength galvannealed steel sheet excellent in workability and a method of production of the same (2008-08-19),

7. 6544354 - High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof (2003-04-08),

8. 6511553 - Steel for steel excellent in workability and method of deoxidizing same (2003-01-28),

9. 6319338 - High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same (2001-11-20),

10. 6129992 - High-strength cold rolled steel sheet and high-strength plated steel (2000-10-10),

11. 5855696 - Ultra low carbon, cold rolled steel sheet and galvanized steel sheet (1999-01-05),

12. 5618355 - High-strength steel sheet suitable for deep drawing and process for (1997-04-08),

Title: Yasuharu Sakuma: Innovator in High-Strength Steel Technology

Introduction

Yasuharu Sakuma is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of materials science, particularly in the development of high-strength steel plates. With a total of 12 patents to his name, Sakuma's work has had a profound impact on the steel industry.

Latest Patents

Sakuma's latest patents include a high-strength steel plate with an ultimate tensile strength of 900 MPa or more, which exhibits excellent resistance to hydrogen embrittlement. This innovative steel plate is characterized by a specific structure that includes a volume fraction of ferrite, bainitic ferrite, and tempered martensite. Additionally, he has developed high-yield ratio high-strength thin steel sheets that are superior in weldability and ductility. These sheets are composed of various elements, including carbon, silicon, manganese, and others, and are designed to meet stringent performance criteria.

Career Highlights

Throughout his career, Yasuharu Sakuma has worked with leading companies in the steel industry, including Nippon Steel Corporation and Nippon Steel & Sumitomo Metal Corporation. His expertise in high-strength materials has positioned him as a key figure in advancing steel technology.

Collaborations

Sakuma has collaborated with notable colleagues such as Atsushi Itami and Naoki Yoshinaga. Their combined efforts have contributed to the development of innovative steel products that meet the demands of modern engineering.

Conclusion

Yasuharu Sakuma's contributions to high-strength steel technology have established him as a leading inventor in his field. His patents reflect a commitment to innovation and excellence in materials science.

Profile summary based on public USPTO records.