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Fujikoshi Machinery Corp.

USPTO Granted Patents = 71

% Expired Patents = 21.1

EPO Patents = 9

Forward Citations = 290

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83 inventors (with patents filed for the assignee):

Yoshio Nakamura (22 out of 31 patents)

Kazutaka Shibuya (9 out of 9 patents)

Hiromi Kishida (9 out of 9 patents)

4. Tadakazu Miyashita (9 out of 9 patents)

5. Koichiro Ichikawa (8 out of 10 patents)

6. Takumi Kobayashi (7 out of 10 patents)

7. Norihiko Moriya (7 out of 8 patents)

8. Fumihiko Hasegawa (7 out of 27 patents)

9. Keigo Hoshikawa (6 out of 10 patents)

10. Tsuyoshi Hasegawa (6 out of 37 patents)

11. Makoto Nakajima (6 out of 9 patents)

12. Yasuo Inada (6 out of 11 patents)

13. Kouji Morita (5 out of 7 patents)

14. Satoru Arakawa (5 out of 6 patents)

15. Yoshio Otsuka (5 out of 6 patents)

Core Competencies:

Wafer Polishing

Double-Sided Polishing

Abrasive Machines

Gallium Oxide Crystal

Single Crystal Production

Polishing Apparatus

Mechanical Polishing

Chemical Polishing

Thickness Measurement

Work Processing

Polishing Head

Crystal Growth

71 patents: Sort by Forward Citations

1. 12650298 - Edge shape measurement apparatus and method of measuring edge shape (2026-06-09),

2. 12258674 - Production apparatus for metal oxide single crystal and production method for metal oxide single crystal (2025-03-25),

3. 12257641 - Work processing apparatus (2025-03-25),

4. 12209853 - Non-contact apparatus for measuring wafer thickness (2025-01-28),

5. 11883924 - Double-sided polishing apparatus (2024-01-30),

6. 11795568 - Production apparatus for gallium oxide crystal capable of preventing harmful substances formed in furnace from being diffused to surroundings of furnace (2023-10-24),

7. 11674239 - Gallium oxide crystal manufacturing device (2023-06-13),

8. 11674238 - Crucible for growing metal oxide single crystal (2023-06-13),

9. 10850365 - Polishing apparatus with a waste liquid receiver (2020-12-01),

10. 10668593 - Work polishing head (2020-06-02),

11. 10636685 - Nozzle and work polishing apparatus (2020-04-28),

12. 10632590 - Work processing apparatus and liquid chemical bag for the same (2020-04-28),

13. 10570528 - Apparatus and method for producing gallium oxide crystal (2020-02-25),

14. 10532442 - Polishing apparatus and wafer polishing method (2020-01-14),

15. 10471565 - Polishing apparatus for a work with mechanical polishing function and chemical polishing function (2019-11-12),

Company Overview

Fujikoshi Machinery Corp., based in Nagano, Japan, specializes in advanced wafer polishing technology, focusing on the development and manufacturing of precision polishing equipment. The company is recognized for its expertise in double-sided polishing and abrasive machines, catering to the semiconductor and electronics industries. Fujikoshi also engages in the production of gallium oxide crystals and single crystals, employing both mechanical and chemical polishing techniques to enhance the quality and performance of semiconductor materials.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

71 Patents

#22 in Nagano

#1,399 in Japan

#10,495 in the World

Fujikoshi Machinery Corp.

Forward Citations = 290

83 inventors:

Yoshio Nakamura (22 out of 31 patents)

Kazutaka Shibuya (9 out of 9 patents)

Hiromi Kishida (9 out of 9 patents)

4. Tadakazu Miyashita (9 out of 9 patents)

5. Koichiro Ichikawa (8 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fujikoshi Machinery Corp.. Retrieved from https://idiyas.com/company/fujikoshi-machinery

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]

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