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For the Inventor, By the Inventor

Chita, Japan

Hiroyasu Yokoyama

This inventor holds 8 USPTO granted patents, plus 1 CIPO patent and 8 EPO patents. Top assignee: Jfe Steel Corporation. Active years: 2012-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyasu Yokoyama. Retrieved from https://idiyas.com/inventor/hiroyasu-yokoyama

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

USPTO Granted Patents = 8

% Patents Active = 100.0



Average Co-Inventor Count = 6.0

ph-index = 2

Forward Citations = 9(Granted Patents)


Location History:

  • Chiyoda-ku, JP (2012)
  • Handa, JP (2013)
  • Chita, JP (2012 - 2015)
  • Tokyo, JP (2012 - 2015)

Company Filing History:

goldMedal8 out of 1,962 
 
Jfe Steel Corporation
 patents

Years Active: 2012-2015

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8 patents (USPTO):Explore Patents
1. 9109884 - Method and equipment for manufacturing electric resistance welded steel pipe (2015-08-18),
2. 9000320 - Method of manufacturing electric resistance welding pipe having excellent characterization of welded seam (2015-04-07),
3. 8912462 - Method of manufacturing electric resistance welding pipes having excellent characterization of welded seams (2014-12-16),
4. 8578580 - Quality control method and manufacturing method for pipe (2013-11-12),
5. 8393217 - Ultrasonic flaw detection apparatus and ultrasonic flaw detection method for pipe (2013-03-12),
6. 8328957 - Electric resistance welded steel pipe with excellent weld toughness for line pipe (2012-12-11),
7. 8296932 - Manufacturing equipment for electric resistance welding pipes having excellent characterization for welded seam (2012-10-30),
8. 8266964 - Calibration of an ultrasonic flaw detector and quality control and production methods for a tubular body (2012-09-18),

Title: Hiroyasu Yokoyama: Innovator in Electric Resistance Welding Technology

Introduction

Hiroyasu Yokoyama is a prominent inventor based in Chita, Japan. He has made significant contributions to the field of electric resistance welding, holding a total of 8 patents. His innovative methods have advanced the manufacturing processes of steel pipes, showcasing his expertise and dedication to engineering.

Latest Patents

Yokoyama's latest patents include a method and equipment for manufacturing electric resistance welded steel pipes. This method ensures the production of steel pipes with desirable toughness at the welded portion, even when the base material exhibits dimensional variations. Additionally, he has developed a method for manufacturing electric resistance welding pipes that enhances the characterization of the welded seam. This involves shaping the lateral edges of the strip appropriately before welding, which leads to improved quality in the final product.

Career Highlights

Hiroyasu Yokoyama is associated with JFE Steel Corporation, where he has been instrumental in advancing welding technologies. His work has not only improved manufacturing efficiency but has also contributed to the overall quality of steel products in the industry.

Collaborations

Yokoyama has collaborated with notable colleagues such as Kazuhito Kenmochi and Tomohiro Inoue. Their combined efforts have fostered innovation and development within their field.

Conclusion

Hiroyasu Yokoyama's contributions to electric resistance welding technology have made a lasting impact on the industry. His innovative methods and collaborative spirit continue to drive advancements in manufacturing processes.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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