Yoshikazu Kawabata

This inventor holds 22 USPTO granted patents and 5 published patent applications, plus 3 CIPO patents and 11 EPO patents, primarily in Welded Steel Technology. Top assignees: Jfe Steel Corporation, Kawasaki Steel Corporation, Jfe Welded Pipe Manufacturing Co., Ltd.. Active years: 1992-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshikazu Kawabata. Retrieved from https://idiyas.com/inventor/yoshikazu-kawabata

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

USPTO Granted Patents = 22 (Patent Applications = 5)

% Patents Active = 59.1

CIPO Patents = 3

EPO Patents = 11 (Patent Applications = 8)

Average Co-Inventor Count = 4.5

ph-index = 4

Forward Citations = 60(Granted Patents)

Location History:

Chiba, JP (1992 - 2001)
Handa, JP (2004 - 2011)
Chiyoda-ku, JP (2011)
Aichi, JP (2004 - 2013)
Kurashiki, JP (2019)
Tokyo, JP (2018 - 2022)

Company Filing History:

17 out of 1,973

Jfe Steel Corporation

patents

5 out of 1,256

Kawasaki Steel Corporation

patents

1 out of 1

Jfe Welded Pipe Manufacturing Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 1992-2025

Loading Chart...

Areas of Expertise:

Electric Resistance Welding

High-Strength Steel

Automotive Structures

Welded Steel Tubes

Seamless Steel Pipe

Production Methods

Hydroformability

Cold Formability

Magnetic Properties

Torsion Beam

Austenitic Steel Plate

Graphite Hot-Rolled Steel

22 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12234524 - Electric resistance welded steel pipe or tube (2025-02-25),

2. 11512361 - Electric resistance welded steel pipe or tube and production method for electric resistance welded steel pipe or tube (2022-11-29),

3. 11332812 - Electric resistance welded steel tubes for high-strength thin hollow stabilizers, and methods for manufacturing the same (2022-05-17),

4. 10308994 - Seamless steel tube for fuel injection (2019-06-04),

5. 10301703 - High-strength welded steel pipe for airbag inflator and method for manufacturing the same (2019-05-28),

6. 9862014 - Method for electric resistance welded steel tube (2018-01-09),

7. 8505941 - Torsion beam manufacturing method and torsion beam (2013-08-13),

8. 7992762 - Frictionally press-bonded member (2011-08-09),

9. 7942984 - Steel pipe with good magnetic properties and method of producing the same (2011-05-17),

10. 7887649 - High-tensile strength welded steel tube for structural parts of automobiles and method of producing the same (2011-02-15),

11. 7591914 - High-workability steel pipe and method of producing same (2009-09-22),

12. 7018488 - Steel pipe for use in reinforcement of automobile and method for production thereof (2006-03-28),

13. 6755919 - Stainless steel tube for automobile structure (2004-06-29),

14. 6749954 - Welded steel pipe having excellent hydroformability and method for making the same (2004-06-15),

15. 6736910 - High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the same (2004-05-18),

Title: Yoshikazu Kawabata: Innovator in Steel Pipe Technology

Introduction

Yoshikazu Kawabata is a renowned inventor based in Tokyo, Japan, known for his significant contributions to the field of steel pipe technology. With 22 patents to his name, Kawabata has developed innovative solutions that enhance the durability and performance of electric resistance welded steel pipes.

Latest Patents

Kawabata's latest inventions include a groundbreaking electric resistance welded steel pipe or tube. This innovative design features a base metal made from a steel sheet with a precise chemical composition. The electric resistance weld portion has a bond width ranging from 40×10 m to 120×10 m, while maintaining a carbon content difference of 0.05 mass% or less. Moreover, it also ensures that the total decarburized layer depth in both the inner and outer surface layers is capped at 50×10 m or less. This technology offers remarkable fatigue durability, especially following rapid and short-time heating quenching treatment.

Another notable patent by Kawabata focuses on a production method for electric resistance welded steel pipes or tubes, which similarly boasts excellent fatigue durability and is characterized by the same specifications as his previous invention.

Career Highlights

Kawabata has had an illustrious career, working with prestigious companies such as JFE Steel Corporation and Kawasaki Steel Corporation. His expertise in steel technology and innovation has positioned him as a key figure in advancing the industry.

Collaborations

Throughout his career, Kawabata has collaborated with notable colleagues, including Masatoshi Aratani and Takaaki Toyooka. These partnerships have contributed to the success of several innovative projects, furthering advancements in steel manufacturing techniques.

Conclusion

Yoshikazu Kawabata's impressive portfolio of patents and his dedicated work within the steel industry exemplify the vital role of innovation in engineering. His developments in electric resistance welded steel pipes not only improve product performance but also represent significant strides in technology that resonate within the industry today.

Profile summary based on public USPTO records.