Kazuhisa Kusumi

This inventor holds 21 USPTO granted patents and 9 published patent applications, plus 9 CIPO patents and 7 EPO patents, primarily in Steel Manufacturing. Top assignees: Nippon Steel Corporation, Nippon Steel Sumitomo Metal Corporation. Active years: 2004-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhisa Kusumi. Retrieved from https://idiyas.com/inventor/kazuhisa-kusumi

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

USPTO Granted Patents = 21 (Patent Applications = 9)

% Patents Active = 100.0

CIPO Patents = 9 (Patent Applications = 4)

EPO Patents = 7 (Patent Applications = 14)

Average Co-Inventor Count = 4.6

ph-index = 4

Forward Citations = 68(Granted Patents)

Location History:

Chiba-Ken, JP (2010)
Kitakyushu, JP (2004 - 2011)
Tokyo, JP (2015 - 2023)

Company Filing History:

13 out of 3,721

Nippon Steel Corporation

patents

8 out of 1,102

Nippon Steel Sumitomo Metal Corporation

patents

Years Active: 2004-2026

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Areas of Expertise:

Steel Sheet

Hot-Rolled Steel

Hot-Stamped Member

Plated Steel

High Strength

Galvanized Steel

Manufacturing Method

Automotive Parts

Enameled Product

Shapeability

Anti-Corrosion

Aluminum Plating

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12767241 - Automobile body (2026-10-20),

2. 12674226 - Steel sheet and enameled product (2026-07-07),

3. 12624434 - Hot-rolled steel sheet (2026-05-12),

4. 12522902 - Joint component and manufacturing method thereof (2026-01-13),

5. 12509754 - Hot-stamped member and steel sheet for hot stamping (2025-12-30),

6. 12227817 - Steel (2025-02-18),

7. 12163231 - Plated steel sheet for hot stamping and hot-stamped member (2024-12-10),

8. 11713497 - Steel member and method of manufacturing same (2023-08-01),

9. 11371130 - Hot-dip Sn—Zn-based alloy-plated steel sheet (2022-06-28),

10. 11352684 - Steel member, steel sheet, and methods for manufacturing same (2022-06-07),

11. 10344360 - Steel sheet for hot stamping use, method of production of same, and method of production of high strength part (2019-07-09),

12. 10113220 - High strength, hot dipped galvanized steel sheet excellent in shapeability and method of production of same (2018-10-30),

13. 10092938 - Plated steel plate for hot pressing and hot pressing method of plated steel plate (2018-10-09),

14. 9821858 - Al-plated steel sheet, method for hot-pressing Al-plated steel sheet, and automotive part (2017-11-21),

15. 9644252 - Hot stamped high strength part excellent in post painting anticorrosion property and method of production of same (2017-05-09),

Title: Kazuhisa Kusumi: Innovator in Steel Technology

Introduction

Kazuhisa Kusumi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of steel technology, holding a total of 16 patents. His innovative work focuses on enhancing the properties and applications of steel materials.

Latest Patents

Kusumi's latest patents include advancements in steel composition and processing. One notable patent describes a steel that features a substrate with a protective film. The chemical composition of this steel includes specific percentages of carbon, silicon, manganese, chromium, and copper, among others. This steel exhibits a tensile strength exceeding 1,500 MPa, making it suitable for high-performance applications. Another patent involves a plated steel sheet designed for hot stamping, which includes a plating layer with a high aluminum content and a surface film layer containing various elements to enhance its properties.

Career Highlights

Throughout his career, Kazuhisa Kusumi has worked with leading companies in the steel industry, including Nippon Steel Corporation and Nippon Steel & Sumitomo Metal Corporation. His expertise in steel technology has positioned him as a key figure in the development of advanced materials.

Collaborations

Kusumi has collaborated with notable colleagues such as Jun Maki and Masayuki Abe. Their combined efforts have contributed to the advancement of steel technology and innovation.

Conclusion

Kazuhisa Kusumi's work in steel technology exemplifies the impact of innovation in material science. His patents reflect a commitment to enhancing the performance and application of steel, making significant strides in the industry.

Profile summary based on public USPTO records.