Nagoya, Japan

Shiro Sakai

This inventor holds 3 USPTO granted patents, plus 2 CIPO patents. Top assignees: Daido Tokushuko Kabushiki Kaisha, Nagoya Institute of Technology. Active years: 1988-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shiro Sakai. Retrieved from https://idiyas.com/inventor/shiro-sakai-336k99w6

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 = 3.0

ph-index = 3

Forward Citations = 145(Granted Patents)


Company Filing History:


Years Active: 1988-1990

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3 patents (USPTO):Explore Patents

Title: Shiro Sakai: Innovator in Semiconductor Technology

Introduction

Shiro Sakai is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of gallium arsenide (GaAs) semiconductor wafers. With a total of 3 patents to his name, Sakai's work has paved the way for advancements in various electronic devices.

Latest Patents

Sakai's latest patents focus on methods for creating epitaxial gallium arsenide semiconductor wafers. One of his notable inventions describes a semiconductor wafer that includes a monocrystalline silicon substrate with a major surface inclined at an off angle between 0.5 degrees and 5 degrees with respect to (100). This wafer features at least one intermediate layer that is epitaxially grown on the silicon substrate, serving as a buffer layer to accommodate lattice mismatches between the substrate and the epitaxial GaAs layer. The intermediate layer may consist of GaP/GaAsP and GaAsP/GaAs superlattice layers. These wafers can be utilized to produce semiconductor light-emitting elements and compound semiconductor devices, including amplifying and switching elements, light-emitting and receiving elements, and photovoltaic elements.

Career Highlights

Throughout his career, Shiro Sakai has worked with notable organizations such as Daido Tokushuko Kabushiki Kaisha and the Nagoya Institute of Technology. His experience in these institutions has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Sakai has collaborated with several professionals in his field, including Masayoshi Umeno and Shinichiro Yahagi. These collaborations have further enhanced his research and development efforts in semiconductor technology.

Conclusion

Shiro Sakai's contributions to the field of semiconductor technology through his innovative patents and collaborations highlight his role as a key inventor in this domain. His work continues to influence the development of advanced electronic 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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