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For the Inventor, By the Inventor

Yokohama, Japan

Shoichi Washizuka

This inventor holds 4 USPTO granted patents. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1993-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shoichi Washizuka. Retrieved from https://idiyas.com/inventor/shoichi-washizuka

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

USPTO Granted Patents = 4

% Patents Active = 75.0

Average Co-Inventor Count = 2.8

ph-index = 3

Forward Citations = 111(Granted Patents)


Company Filing History:

goldMedal4 out of 53,276 
 
Kabushiki Kaisha Toshiba
 patents

Years Active: 1993-2006

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4 patents (USPTO):Explore Patents
1. 7037738 - Method of manufacturing a semiconductor light-emitting element (2006-05-02),
2. 6924513 - Light emitting element and manufacturing method for the same (2005-08-02),
3. 6373069 - Method for evaluating an epitaxial wafer for a light emitting device, recording medium readable by a computer and epitaxial wafer for a light emitting device (2002-04-16),
4. 5179333 - Apparatus for measuring the electrical characteristics of a (1993-01-12),

Title: The Innovations of Shoichi Washizuka

Introduction

Shoichi Washizuka is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on the development of advanced light-emitting elements, which have applications in various electronic devices.

Latest Patents

One of Washizuka's latest patents is a method of manufacturing a semiconductor light-emitting element. This invention describes a semiconductor light-emitting element that comprises a substrate with a first and second surface. A semiconductor laminate is formed on the first surface, containing a light-emitting layer and a current diffusion layer with a light-extracting surface. The light-extracting surface features a finely recessed/projected design, with 90% of it constructed such that the height of the projected portion has a cone-like configuration of 100 nm or more, and the width of the base ranges from 10-500 nm.

Another notable patent is for a light-emitting element that includes a light-emitting layer and two rectangular principal surfaces. These surfaces are parallel and sandwich the light-emitting layer between them. The element also features rough surfaces on its sides, which connect the principal surfaces and define a solid shape.

Career Highlights

Shoichi Washizuka is associated with Kabushiki Kaisha Toshiba, a leading company in the technology sector. His work at Toshiba has allowed him to innovate and develop cutting-edge technologies in semiconductor manufacturing.

Collaborations

Washizuka has collaborated with notable coworkers, including Yasuhiko Akaike and Yoshiyuki Kinugawa. Their combined expertise has contributed to the advancement of semiconductor technologies.

Conclusion

Shoichi Washizuka's contributions to semiconductor technology through his patents and work at Toshiba highlight his role as an influential inventor. His innovations continue to impact the field and pave the way for future advancements in light-emitting elements.

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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