Ushiku, Japan

Toshihiko Ibuka

This inventor holds 4 USPTO granted patents. Top assignees: Mitsubishi Kasei Corporation, Mitsubishi Kasei Polytec Company, Mitsubishi Monsanto Chemical Co., Ltd.. Active years: 1991-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshihiko Ibuka. Retrieved from https://idiyas.com/inventor/toshihiko-ibuka

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 3

Forward Citations = 94(Granted Patents)


Location History:

  • Tsuchiura, JP (1991)
  • Ushiku, JP (1991 - 1994)

Company Filing History:


Years Active: 1991-1994

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4 patents (USPTO):Explore Patents

Title: Toshihiko Ibuka: Innovator in Semiconductor Technology

Introduction

Toshihiko Ibuka is a notable inventor hailing from Ushiku, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of methods for forming electrodes in compound semiconductors. With a total of 4 patents to his name, his work has had a lasting impact on the industry.

Latest Patents

Ibuka's latest patents include a method for forming an electrode for a compound semiconductor. This method involves the formation of an Au layer on the surface of an n-type layer of Ga.sub.1-x Al.sub.x As, followed by an alloying treatment after sequentially forming Ge and Ni layers. The specific thicknesses of the layers are crucial for achieving optimal performance in Ga-Al-As compound semiconductors. Another significant patent focuses on the Au-Ge-Ni ohmic contact for the same compound semiconductor, emphasizing the importance of layer formation and treatment in enhancing semiconductor functionality.

Career Highlights

Throughout his career, Ibuka has worked with prominent companies such as Mitsubishi Kasei Corporation and Mitsubishi Monsanto Chemical Co., Ltd. His experience in these organizations has allowed him to refine his expertise in semiconductor technology and contribute to various innovative projects.

Collaborations

Ibuka has collaborated with notable coworkers, including Masahiro Noguchi and Yutaka Yamada. These partnerships have fostered a collaborative environment that has led to advancements in their respective fields.

Conclusion

Toshihiko Ibuka's contributions to semiconductor technology through his patents and collaborations highlight his role as an influential inventor. His work continues to inspire advancements in the industry, showcasing the importance of innovation in technology.

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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