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Edwards Japan Limited

USPTO Granted Patents = 145

% Expired Patents = 2.8

EPO Patents = 101

Trademarks = 1

Forward Citations = 101

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88 inventors (with patents filed for the assignee):

Yoshiyuki Sakaguchi (35 out of 45 patents)

Takashi Kabasawa (33 out of 47 patents)

Yasushi Maejima (19 out of 30 patents)

4. Yoshinobu Ohtachi (18 out of 26 patents)

5. Tsutomu Takaada (18 out of 18 patents)

6. Manabu Nonaka (16 out of 31 patents)

7. Tooru Miwata (13 out of 18 patents)

8. Kengo Saegusa (9 out of 9 patents)

9. Hideo Fukami (9 out of 12 patents)

10. Yoshiyuki Takai (8 out of 8 patents)

11. Hideki Omori (7 out of 8 patents)

12. Yongwei Shi (7 out of 10 patents)

13. Yoshihiro Enomoto (7 out of 9 patents)

14. Toshiaki Kawashima (7 out of 12 patents)

15. Yanbin Sun (6 out of 6 patents)

Core Competencies:

Turbomolecular Pump

Vacuum Pump

Magnetic Bearing

Control Apparatus

Leak Prevention

Rotating Body

Exhaust System

Temperature Control

Cleaning Apparatus

Abatement Device

Dry Pump

Cylindrical Portion

145 patents: Sort by Forward Citations

1. 12741300 - Detoxification device and nozzle scraper (2026-09-22),

2. 12692870 - Vacuum pump (2026-07-28),

3. 12638176 - Vacuum pump, detoxifying device, and exhaust gas processing system (2026-05-26),

4. 12571382 - Turbomolecular pump (2026-03-10),

5. 12553444 - Vacuum pump (2026-02-17),

6. 12521770 - Abatement device, deposited material removing means, and deposited material removing method (2026-01-13),

7. 12516682 - Vacuum pump, rotating body for vacuum pump, and balance correcting member for vacuum pump (2026-01-06),

8. 12516681 - Vacuum pump, rotating body, cover portion, and manufacturing method of rotating body (2026-01-06),

9. 12510090 - Vacuum pump, vacuum pump controller, and remote controller (2025-12-30),

10. 12510085 - Vacuum pump (2025-12-30),

11. 12504014 - Vacuum pump (2025-12-23),

12. 12486851 - Vacuum pump (2025-12-02),

13. 12467464 - Vacuum pump and vacuum exhaust apparatus (2025-11-11),

14. 12467442 - Cleaning apparatus for vacuum exhaust system (2025-11-11),

15. 12448976 - Vacuum pump and control apparatus of vacuum pump with water leakage prevention between the pump main body and control apparatus (2025-10-21),

Edwards Japan Limited, based in Chiba, specializes in advanced vacuum pump technology, focusing on the development and manufacturing of turbomolecular pumps and various vacuum systems. The company is recognized for its expertise in magnetic bearing technology, which enhances the efficiency and reliability of vacuum pumps. Edwards Japan also emphasizes innovations in control apparatus, leak prevention, and temperature control, catering to diverse industrial applications that require precise vacuum environments.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

145 Patents

#12 in Chiba

#871 in Japan

#5,608 in the World

Edwards Japan Limited

Forward Citations = 101

88 inventors:

Yoshiyuki Sakaguchi (35 out of 45 patents)

Takashi Kabasawa (33 out of 47 patents)

Yasushi Maejima (19 out of 30 patents)

4. Yoshinobu Ohtachi (18 out of 26 patents)

5. Tsutomu Takaada (18 out of 18 patents)

Please report any incorrect information to [email protected]

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