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For the Inventor, By the Inventor

Tokyo, Japan

Yasuhisa Tanisawa

This inventor holds 7 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1992-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhisa Tanisawa. Retrieved from https://idiyas.com/inventor/yasuhisa-tanisawa

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 7

Forward Citations = 172(Granted Patents)


Company Filing History:

goldMedal7 out of 36,735 
 
Nec Corporation
 patents

Years Active: 1992-1998

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7 patents (USPTO):Explore Patents
1. 5771322 - Light-receiving structure for wave-guide type optical devices (1998-06-23),
2. 5478778 - Method of manufacturing a compact optical semiconductor module capable (1995-12-26),
3. 5293441 - Optical device capable of reliably fixing a substrate to a package (1994-03-08),
4. 5283446 - Compact optical semiconductor module capable of being readily assembled (1994-02-01),
5. 5278929 - Optical module, method for fabricating the same and optical module unit (1994-01-11),
6. 5278928 - Optical fiber connector having a glass ferrule covered by a thin (1994-01-11),
7. 5148507 - Optical waveguide device with two predetermined wavelength, polarization (1992-09-15),

Title: Yasuhisa Tanisawa: Innovator in Optical Semiconductor Technology

Introduction

Yasuhisa Tanisawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical semiconductor technology, holding a total of 7 patents. His work focuses on enhancing the efficiency and productivity of optical devices.

Latest Patents

One of his latest patents is a light-receiving structure for wave-guide type optical devices. This innovative design excels in productivity and is compactly formed, allowing for highly efficient coupling. The structure features a recess on the surface of a substrate where an optical waveguide is formed. A light-receiving element is mounted on this recess, with its light-receiving face oriented upward. The optical waveguide's end face is strategically positioned to emit light towards the light-receiving element, which is reflected by a reflector arranged above the substrate. This design improves packaging density by allowing the light-receiving element to be mounted on the underside of the substrate.

Another notable patent involves a method of manufacturing a compact optical semiconductor module. In this design, an optical semiconductor chip is mounted on a substrate using multiple solder bumps. Each bump is surrounded by a side wall that is lower than the predetermined height of the bumps. This configuration allows for precise positioning of the optical semiconductor chip both horizontally and vertically, ensuring optimal performance.

Career Highlights

Yasuhisa Tanisawa is currently associated with NEC Corporation, a leading technology company. His work at NEC has been instrumental in advancing optical semiconductor technologies, contributing to the company's reputation for innovation.

Collaborations

Throughout his career, Tanisawa has collaborated with notable colleagues, including Tetsuji Ueda and Kiyoto Matsumoto. These collaborations have further enriched his contributions to the field.

Conclusion

Yasuhisa Tanisawa's innovative work in optical semiconductor technology has led to significant advancements in the industry. His patents reflect a commitment to enhancing efficiency and productivity in optical 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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