Hashimoto, Japan

Keiji Kumatani

This inventor holds 2 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 2005-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Kumatani. Retrieved from https://idiyas.com/inventor/keiji-kumatani

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


% Patents Active = 50.0

Average Co-Inventor Count = 4.0

ph-index = 2

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 2005-2010

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2 patents (USPTO):Explore Patents

Title: Keiji Kumatani: Innovator in Optical Technology

Introduction

Keiji Kumatani is a prominent inventor based in Hashimoto, Japan. He has made significant contributions to the field of optical technology, holding a total of 2 patents. His work primarily focuses on semiconductor laser devices and their applications in communication systems.

Latest Patents

Kumatani's latest patents include a range of innovative devices such as a semiconductor laser device, optical transmission device, optical transmission system, electronic device, control device, connector, communication device, and optical transmission method. One notable invention is a device that incorporates a semiconductor laser device with a semiconductor laser chip, which is covered with a molded resin that has light diffusion capabilities. This design enhances the performance of optical transmission systems.

Career Highlights

Kumatani is associated with Sharp Kabushiki Kaisha Corporation, where he continues to develop cutting-edge technologies. His expertise in semiconductor lasers has positioned him as a key player in the advancement of optical communication devices.

Collaborations

Throughout his career, Kumatani has collaborated with notable colleagues such as Hidenori Kawanishi and Toshihiro Inooka. These partnerships have fostered innovation and contributed to the successful development of various technologies in the optical field.

Conclusion

Keiji Kumatani's contributions to optical technology and his innovative patents reflect his dedication to advancing communication systems. His work continues to influence the industry and pave the way for future developments in semiconductor laser 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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