Ogaki, Japan

Tomio Yamashita

This inventor holds 5 USPTO granted patents and 3 published patent applications. Top assignees: Sanyo Electric Co., Ltd., Panasonic Intellectual Property Management Co., Ltd.. Active years: 2005-2018.

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

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

USPTO Granted Patents = 5 

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 3

Forward Citations = 9(Granted Patents)


Location History:

  • Ogaki, JP (2005 - 2011)
  • Osaka, JP (2018)

Company Filing History:


Years Active: 2005-2018

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5 patents (USPTO):Explore Patents

Title: Tomio Yamashita: Innovator in Semiconductor Technology

Introduction

Tomio Yamashita is a prominent inventor based in Ogaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His innovative approaches have paved the way for advancements in the production of Group III nitride crystals and semiconductor devices.

Latest Patents

Yamashita's latest patents include a method for producing Group III nitride crystals. This method involves suppressing the thermal decomposition of nitrogen element-containing gas to enhance productivity. The process includes reacting an oxide or a metal of a Group III element under a heated atmosphere to form a compound gas, mixing it with a nitrogen element-containing gas at a lower temperature, and reacting them to form a Group III nitride crystal. Another notable patent is for a semiconductor device that features an epitaxial layer, a body layer with a channel region, a source layer, a gate insulator, a gate electrode, a drift layer, and a drain layer. This design optimizes the performance of semiconductor devices.

Career Highlights

Throughout his career, Tomio Yamashita has worked with notable companies such as Sanyo Electric Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Yamashita has collaborated with esteemed colleagues, including Yoshio Okayama and Kazunori Fujita. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Tomio Yamashita's contributions to semiconductor technology and his innovative patents highlight his role as a leading inventor in the field. His work continues to influence advancements in technology and the production of high-performance semiconductor devices.

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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