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Shin-Etsu Quartz Products Co., Ltd.

USPTO Granted Patents = 99

EPO Patents = 37

Forward Citations = 1,133

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127 inventors (with patents filed for the assignee):

Akira Fujinoki (22 out of 35 patents)

Tatsuhiro Sato (20 out of 24 patents)

Shigeru Yamagata (14 out of 19 patents)

4. Yasuo Ohama (12 out of 16 patents)

5. Kyoichi Inaki (11 out of 17 patents)

6. Hiroyuki Nishimura (10 out of 20 patents)

7. Hiroyuki Watanabe (10 out of 13 patents)

8. Nobumasa Yoshida (9 out of 10 patents)

9. Tomomi Usui (8 out of 9 patents)

10. Hiroshi Matsui (7 out of 7 patents)

11. Shigeo Mizuno (5 out of 5 patents)

12. Mitsuo Matsumura (5 out of 5 patents)

13. Katsuhiko Kemmochi (4 out of 13 patents)

14. Akihiko Sugama (4 out of 8 patents)

15. Masaaki Aoyama (4 out of 5 patents)

Core Competencies:

Quartz Glass Crucible

Single Crystal Silicon

Czochralski Method

Silica Glass Yarn

Synthetic Quartz Glass

UV Absorption

Heat-Reflecting Layer

Hermetic Sealing

Silica Container

Optical Fiber Cladding

Plasma Corrosion Resistance

Doped Quartz Glass

99 patents: Sort by Forward Citations

1. 12398484 - Quartz glass crucible for growing a single crystal silicon ingot by a Czochralski (CZ) method (2025-08-26),

2. 12392054 - CZ crucible with a gap between an inner quartz crucible and an outer graphite crucible (2025-08-19),

3. 12286374 - Titanium-containing quartz glass having excellent UV absorption, and method for producing same (2025-04-29),

4. 12264095 - Reflective member and glass layered member production method (2025-04-01),

5. 12215052 - Silica glass disc having dimples formed thereon (2025-02-04),

6. 12180104 - Heat-reflecting member, and method for manufacturing glass member having heat-reflecting layer included therein (2024-12-31),

7. 12157959 - Silica glass yarn and silica glass cloth (2024-12-03),

8. 11927882 - Quartz glass plate (2024-03-12),

9. 11905196 - Mold and method for manufacturing quartz glass crucible (2024-02-20),

10. 11834362 - Method for producing multilayered silica glass body (2023-12-05),

11. 11821103 - Quartz glass crucible (2023-11-21),

12. 11757075 - Silica glass member for hermetic sealing of ultraviolet SMD LED element and method for manufacturing quartz glass member for ultraviolet led (2023-09-12),

13. 11685993 - Method of cleaning reaction tube, method of manufacturing semiconductor device, and substrate processing apparatus (2023-06-27),

14. 11629429 - Quartz glass crucible and method for producing the same (2023-04-18),

15. 11401192 - Method for producing hollow porous quartz glass base material (2022-08-02),

Shin-Etsu Quartz Products Co., Ltd. is a leading manufacturer of quartz products and specializes in the development and production of synthetic quartz crystals. With a wide range of applications, including semiconductors, telecommunications, and optics, Shin-Etsu Quartz Products Co., Ltd. offers high-quality quartz components and solutions to various industries worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

99 Patents

#477 in Tokyo

#1,104 in Japan

#7,642 in the World

Shin-Etsu Quartz Products Co., Ltd.

Forward Citations = 1,133

127 inventors:

Akira Fujinoki (22 out of 35 patents)

Tatsuhiro Sato (20 out of 24 patents)

Shigeru Yamagata (14 out of 19 patents)

4. Yasuo Ohama (12 out of 16 patents)

5. Kyoichi Inaki (11 out of 17 patents)

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