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For the Inventor, By the Inventor

Kyoto, Japan

Kazuaki Tsutsumi

This inventor holds 10 USPTO granted patents and 4 published patent applications. Top assignee: Rohm Co., Ltd.. Active years: 2011-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuaki Tsutsumi. Retrieved from https://idiyas.com/inventor/kazuaki-tsutsumi

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

USPTO Granted Patents = 10 

% Patents Active = 90.0

Average Co-Inventor Count = 3.6

ph-index = 3

Forward Citations = 12(Granted Patents)


Company Filing History:

goldMedal10 out of 6,021 
 
Rohm Co., Ltd.
 patents

Years Active: 2011-2020

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10 patents (USPTO):Explore Patents
1. 10529903 - Light emitting device and light emitting device package (2020-01-07),
2. 10497831 - Semiconductor light emitting element and manufacturing method thereof (2019-12-03),
3. 10263150 - Semiconductor light emitting device capable of increasing luminous efficiency under a low applied current (2019-04-16),
4. 9991430 - Light emitting device and light emitting device package (2018-06-05),
5. 9876137 - Semiconductor light emitting device (2018-01-23),
6. 9281444 - Light emitting device and light emitting device package (2016-03-08),
7. 8686433 - Light emitting device and light emitting device package (2014-04-01),
8. 8415682 - Light emitting semiconductor device having an improved outward luminosity efficiency and fabrication method for the light emitting semiconductor device (2013-04-09),
9. 8222655 - Semiconductor light-emitting device and process for producing the same (2012-07-17),
10. 8053756 - Nitride semiconductor light emitting element (2011-11-08),

Title: Kazuaki Tsutsumi: Innovator in Light Emitting Devices

Introduction

Kazuaki Tsutsumi is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of light emitting devices, holding a total of 10 patents. His work focuses on advancing semiconductor technology and enhancing the efficiency of light emitting elements.

Latest Patents

Among his latest patents, Tsutsumi has developed a light emitting device that features a unique structure. This device includes a light emitting layer and a transparent substrate designed to receive emissions from the light emitting layer. The innovative design incorporates a convex pattern with multiple convex portions arranged on the substrate's surface. Additionally, he has patented a semiconductor light emitting element that consists of a substrate with a semiconductor layer capable of generating light. This element also includes a light reflective layer that enhances the light output by reflecting it back toward the semiconductor layer.

Career Highlights

Kazuaki Tsutsumi is currently associated with Rohm Co., Ltd., a leading company in semiconductor technology. His work at Rohm has positioned him as a key player in the development of advanced light emitting devices. His patents reflect his commitment to innovation and excellence in the field.

Collaborations

Throughout his career, Tsutsumi has collaborated with notable colleagues, including Hirotaka Obuchi and Takao Fujimori. These collaborations have contributed to the advancement of technology in the semiconductor industry.

Conclusion

Kazuaki Tsutsumi's contributions to light emitting devices and semiconductor technology have established him as a significant inventor in his field. His innovative patents continue to influence the development of efficient lighting solutions.

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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