Gyoda, Japan

Yoshitaka Chiba

This inventor holds 5 USPTO granted patents. Top assignee: Hitachi Metals, Ltd.. Active years: 1977-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshitaka Chiba. Retrieved from https://idiyas.com/inventor/yoshitaka-chiba

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 5

Forward Citations = 70(Granted Patents)


Location History:

  • Yasugi, JA (1977)
  • Gyoda, JP (1990 - 1992)

Company Filing History:


Years Active: 1977-1992

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5 patents (USPTO):Explore Patents

Title: Innovations of Yoshitaka Chiba in Rare Earth Metal Technology

Introduction

Yoshitaka Chiba is a prominent inventor based in Gyoda, Japan. He has made significant contributions to the field of materials science, particularly in the development of rare earth metal technologies. With a total of 5 patents to his name, Chiba's work has had a notable impact on various applications, including magneto-optical disks.

Latest Patents

Chiba's latest patents focus on the production of rare earth metal-iron group metal targets. One of his notable inventions involves a method for creating a rare earth metal-iron group metal target for magneto-optical disks. This process includes mixing powder produced by rapid quenching treatment of an alloy composed of at least one rare earth metal and at least one iron group metal. The mixture is then subjected to pressure sintering in a vacuum or inert gas atmosphere, resulting in a rare earth metal-iron group metal intermetallic bonding layer between the particles.

Career Highlights

Yoshitaka Chiba is currently associated with Hitachi Metals, Ltd., where he continues to innovate in the field of materials science. His work has been instrumental in advancing the understanding and application of rare earth metals in various technologies.

Collaborations

Chiba has collaborated with notable colleagues, including Shunichiro Matsumoto and Tsutomu Inui. These collaborations have further enriched his research and development efforts in the field.

Conclusion

Yoshitaka Chiba's contributions to rare earth metal technology exemplify the importance of innovation in materials science. His patents and ongoing work at Hitachi Metals, Ltd. continue to influence the industry and pave the way for future advancements.

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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