Nao Yoshihara

USPTO Granted Patents = 18 (Patent Applications = 5)

CIPO Patents = 3 (Patent Applications = 1)

EPO Patents = 15 (Patent Applications = 16)

Average Co-Inventor Count = 1.9

ph-index = 4

Forward Citations = 46(Granted Patents)

Location History:

Hyogo, JP (2010)
Kobe, JP (2001 - 2019)

Company Filing History:

Kabushiki Kaisha Kobe Seiko Sho

Kabushiki Kaisha Kobe Seiko Sho (kobe Steel, Ltd.)

patents

where one patent can have more than one assignee

Years Active: 2001-2019

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10385430 - High-strength steel material having excellent fatigue properties (2019-08-20),

2. 9994940 - High carbon steel wire rod having excellent drawability (2018-06-12),

3. 9970072 - High-strength spring steel wire with excellent hydrogen embrittlement resistance, manufacturing process therefor, and high-strength spring (2018-05-15),

4. 9611523 - Cold formable spring steel wire excellent in cold cutting capability and fatigue properties and manufacturing process thereof (2017-04-04),

5. 9540718 - High-strength steel wire material exhibiting excellent cold-drawing properties, and high-strength steel wire (2017-01-10),

6. 9121080 - High-carbon steel wire excellent in wire drawability and fatigue property after wiredrawing (2015-09-01),

7. 9097306 - Steel wire rod for high-strength spring excellent in wire drawability, manufacturing method therefor, and high-strength spring (2015-08-04),

8. 8557061 - Spring steel with excellent resistance to hydrogen embrittlement and steel wire and spring obtained from the steel (2013-10-15),

9. 8382918 - Steel wire material for spring and its producing method (2013-02-26),

10. 8192562 - Spring steel wire excellent in fatigue characteristic and wire drawability (2012-06-05),

11. 8043444 - Steel wire for cold-formed spring excellent in corrosion resistance and method for producing the same (2011-10-25),

12. 7901520 - Spring wire rod excelling in fatigue characteristics (2011-03-08),

13. 7887924 - High-strength steel with excellent unsusceptibility to hydrogen embrittlement (2011-02-15),

14. 7763123 - Spring produced by a process comprising coiling a hard drawn steel wire excellent in fatigue strength and resistance to setting (2010-07-27),

15. 7618498 - Steels for high-strength springs excellent in cold workability and quality stability (2009-11-17),

Title: Innovations by Nao Yoshihara in High-Strength Steel Materials

Introduction

Nao Yoshihara, located in Kobe, Japan, is a notable inventor with a significant contribution to the field of metallurgy, holding 18 patents in his name. His work focuses primarily on developing high-strength steel materials that exhibit exceptional fatigue properties and drawability.

Latest Patents

Among his latest innovations, Yoshihara has developed a high-strength steel material specifically designed for high-strength springs. This invention offers enhanced fatigue properties without increasing alloy costs. The steel composition includes specific percentages of carbon, silicon, manganese, phosphorus, sulfur, chromium, aluminum, nitrogen, and oxygen, ensuring a robust microstructure featuring tempered martensite and a defined particle density of Cr-containing carbides or carbonitrides.

Another significant invention is a high carbon steel wire rod that combines high strength with excellent drawability. This material contains precise amounts of carbon, silicon, manganese, phosphorus, sulfur, titanium, boron, and nitrogen, carefully formulated to ensure the required structural integrity while maintaining processability.

Career Highlights

Nao Yoshihara's professional journey includes notable positions at Kobe Steel, Ltd. and Kabushiki Kaisha Kobe Seiko Sho, where he has contributed to innovative projects that aim to improve the efficiency and performance of steel materials in various applications.

Collaborations

Throughout his career, Yoshihara has collaborated with distinguished colleagues, including Nobuhiko Ibaraki and Hiroshi Oura. Their teamwork has enabled significant advancements in the field of steel production technology.

Conclusion

Nao Yoshihara's contributions to the field of high-strength steel materials underscore his expertise and innovative spirit. His patents not only advance the metallurgy industry but also hold the promise of practical applications that can enhance manufacturing processes around the world.

This text is generated by artificial intelligence and may not be accurate.