For the Inventor, By the Inventor

Enter assignee name

Coorstek Kk

Calculating rank

USPTO Granted Patents = 30

EPO Patents = 4

Trademarks = 1

Forward Citations = 27

Loading Chart...

Loading Chart...

40 inventors (with patents filed for the assignee):

Yoshihisa Abe (9 out of 16 patents)

Kenichi Eriguchi (7 out of 11 patents)

Jun Komiyama (7 out of 16 patents)

4. Hiroshi Oishi (6 out of 12 patents)

5. Mitsuhiro Fujita (4 out of 19 patents)

6. Noriko Omori (4 out of 4 patents)

7. Masaki Irie (3 out of 7 patents)

8. Shuko Akamine (3 out of 4 patents)

9. Hiroki Watanabe (2 out of 2 patents)

10. Yuji Fukasawa (2 out of 2 patents)

11. Takeshi Ogitsu (2 out of 2 patents)

12. Ryohei Saito (1 out of 1 patent)

13. Akira Yoshida (1 out of 115 patents)

14. Yukiko Kikuchi (1 out of 6 patents)

15. Ramesh Vallepu (1 out of 1 patent)

Core Competencies:

Nitride Substrate

Alumina Ceramic

Silica Glass

Phosphor Plate

Conductive Diffuser

Ceramic Composite

Wafer Boat

Heat Insulator

Carbon Fiber

Epitaxial Substrate

Light Diffusion

Refractory Particles

30 patents: Sort by Forward Citations

1. 12725763 - Ceramic sintered body for semiconductor production equipment and manufacturing method thereof (2026-09-01),

2. 11905219 - Alumina ceramic (2024-02-20),

3. 11760694 - Alumina sintered body and manufacturing method therefor (2023-09-19),

4. 11605716 - Nitride semiconductor substrate and method of manufacturing the same (2023-03-14),

5. 11512247 - Phosphor plate (2022-11-29),

6. 11264243 - Conductive diffuser and manufacturing method of the same (2022-03-01),

7. 11230795 - Silica-glass crucible and production method thereof (2022-01-25),

8. 11201217 - Nitride semiconductor substrate (2021-12-14),

9. 11072555 - Glass member (2021-07-27),

10. 10974183 - Break filter using a silicon carbide porous body and manufacturing method of the break filter (2021-04-13),

11. 10830301 - Short carbon fiber-reinforced composite material and method for producing same (2020-11-10),

12. 10825895 - Nitride semiconductor substrate (2020-11-03),

13. 10674566 - Planar heater (2020-06-02),

14. 10593790 - Nitride semiconductor substrate and method for manufacturing the same (2020-03-17),

15. 10559679 - Nitride semiconductor epitaxial substrate (2020-02-11),

Company Overview

Coorstek Kk, based in Tokyo, specializes in advanced materials and engineered ceramics, catering to a diverse range of industries including electronics, aerospace, and medical devices. The company focuses on developing high-performance solutions that enhance product reliability and efficiency. With a strong emphasis on innovation, Coorstek Kk leverages cutting-edge technology to address complex challenges in manufacturing and design, positioning itself as a leader in the materials science sector within the Asian market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

30 Patents

#1,064 in Tokyo

#2,311 in Japan

#21,955 in the World

Coorstek Kk

Forward Citations = 27

40 inventors:

Yoshihisa Abe (9 out of 16 patents)

Kenichi Eriguchi (7 out of 11 patents)

Jun Komiyama (7 out of 16 patents)

4. Hiroshi Oishi (6 out of 12 patents)

5. Mitsuhiro Fujita (4 out of 19 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Coorstek Kk. Retrieved from https://idiyas.com/company/coorstek-kk

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

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]

Loading…