Tomio Yamakawa

This inventor holds 37 USPTO granted patents, plus 14 CIPO patents and 32 EPO patents, primarily in Seamless Pipe Manufacturing. Top assignees: Sumitomo Metal Industries, Inc., Nippon Steel Sumitomo Metal Corporation. Active years: 1978-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomio Yamakawa. Retrieved from https://idiyas.com/inventor/tomio-yamakawa

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

USPTO Granted Patents = 37

% Patents Active = 89.2

CIPO Patents = 14 (Patent Applications = 3)

EPO Patents = 32 (Patent Applications = 4)

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 84(Granted Patents)

Location History:

Amagasaki, JA (1978)
Amagasaki, JP (2006 - 2009)
Nishinomiya, JP (2011)
Osaka, JP (1997 - 2014)
Kawanishi, JP (1995 - 2015)
Tokyo, JP (2014 - 2017)

Company Filing History:

23 out of 929

Sumitomo Metal Industries, Inc.

patents

14 out of 1,102

Nippon Steel Sumitomo Metal Corporation

patents

Years Active: 1978-2017

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Areas of Expertise:

Seamless Pipe

Piercing Apparatus

Hot Rolling Mill

Metal Working

Lubricant Composition

Alloy Pipe Stock

Duplex Stainless Steel

High-Alloy Tube

Piercing-Rolling Method

Manufacturing Process

Inter-Stand Tension

Metallic Tube

37 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9545658 - Piercing apparatus, plug used for piercing apparatus, and method for producing seamless steel pipe (2017-01-17),

2. 9486845 - Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine (2016-11-08),

3. 9308561 - Method of producing seamless metal pipe (2016-04-12),

4. 9283600 - Plug for hot pipe making (2016-03-15),

5. 9254511 - Method for producing seamless tube/pipe (2016-02-09),

6. 9221087 - Method of producing seamless metal pipe (2015-12-29),

7. 9034125 - Method for manufacturing Ni base alloy pipe stock (2015-05-19),

8. 8863564 - Lubricant composition for hot metal working and method of hot metal working using the same (2014-10-21),

9. 8846152 - Antioxidant agent and process for producing metallic material (2014-09-30),

10. 8815347 - Antioxidant agent and process for producing metallic material (2014-08-26),

11. 8784581 - Fe-Ni alloy pipe stock and method for manufacturing the same (2014-07-22),

12. 8783085 - Method for straightening tube and straightening roll (2014-07-22),

13. 8613817 - Method for producing duplex stainless steel seamless pipe (2013-12-24),

14. 8544306 - Plug, piercing-rolling mill, and method of producing seamless tube by using the same (2013-10-01),

15. 8490452 - Method for producing seamless tubes (2013-07-23),

Title: Tomio Yamakawa: Innovating Seamless Steel Pipe Production

Introduction:

In the dynamic world of innovations and patents, Tomio Yamakawa has established himself as a prominent inventor hailing from Osaka, Japan. With an impressive 37 patents to his name, Yamakawa's contributions to the field of seamless steel pipe production have been revolutionary. In this article, we will delve into his latest patents, career highlights, and notable collaborations.

Latest Patents:

Yamakawa's recent patents showcase his expertise in piercing apparatus and seamless steel pipe manufacturing. One of his notable inventions is the piercing apparatus, which addresses the challenge of inner surface flaws in hollow shells. It suppresses such flaws, enhancing the quality and reliability of seamless steel pipes. Additionally, his plug used for piercing apparatus and method for producing seamless steel pipe further contribute to seamless pipe manufacturing by ensuring superior precision and efficiency.

Career Highlights:

Tomio Yamakawa has worked with leading industry players such as Sumitomo Metal Industries, Inc. and Nippon Steel & Sumitomo Metal Corporation. These renowned companies have provided him with the platform to innovate and thrive in his field. Through his various roles within these organizations, Yamakawa's contributions have significantly influenced the seamless steel pipe production processes.

Collaborations:

Throughout his career, Yamakawa has collaborated with several remarkable individuals, enriching his work experience and fostering innovation. Kazuhiro Shimoda and Yasuyoshi Hidaka are among his noteworthy coworkers, with whom he has shared ideas and expertise. These collaborations have undoubtedly contributed to the development and success of his patented inventions.

Conclusion:

Tomio Yamakawa's journey as an inventor has not only left an indelible mark on the realm of seamless steel pipe production, but also serves as an inspiration to aspiring inventors worldwide. His latest patents, including the piercing apparatus and plug used for piercing apparatus, exemplify his dedication to enhancing the quality and efficiency of seamless steel pipe manufacturing. Yamakawa's career highlights and collaborations further showcase his passion for innovation and his tireless pursuit of advancements in his field.

Profile summary based on public USPTO records.