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Nabco Limited

USPTO Granted Patents = 60

% Expired Patents = 23.3

EPO Patents = 3

Trademarks = 3

Forward Citations = 942

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74 inventors (with patents filed for the assignee):

Osamu Akamatsu (5 out of 17 patents)

Masahiko Okuda (4 out of 13 patents)

Norio Shiraishi (4 out of 4 patents)

4. Yasukazu Furuichi (4 out of 4 patents)

5. Yoshinobu Ishida (4 out of 4 patents)

6. Hisayuki Kanki (3 out of 5 patents)

7. Yoshio Asano (3 out of 12 patents)

8. Kim W King (3 out of 3 patents)

9. Kensuke Ioku (3 out of 8 patents)

10. Masahiro Tsunemi (3 out of 4 patents)

11. Takeshi Hachimaki (3 out of 3 patents)

12. Koji Tsutsumi (3 out of 3 patents)

13. Toshiyuki Matsuoka (3 out of 3 patents)

14. Takeshi Kaneko (3 out of 3 patents)

15. Isao Kikutani (3 out of 3 patents)

Core Competencies:

Automatic Door System

Fluid Pressure Control

Prosthetic Limb

Object Sensor

Hydraulic Circuit

Brake Monitoring

Electric Vehicle

Sealed Containment Vessel

Clutch Actuating Device

Pulsation Dampening

Reduction Gear

Hollow Fiber Membrane

60 patents: Sort by Forward Citations

1. 7765910 - Sealed upscale total containment vessel (2010-08-03),

2. 7588604 - Prosthetic leg with knee braking function (2009-09-15),

3. 7506568 - Sealed upscale total containment vessel (2009-03-24),

4. 7361118 - Gear mechanism and reduction planetary gear (2008-04-22),

5. 7181369 - Method and system for administering automatic door apparatus, and automatic door apparatus (2007-02-20),

6. 7104008 - Door system with a pair of door panels connected by a swivel panel that swings back and forth for selectively opening and closing gateways in a compartment (2006-09-12),

7. 7064666 - Composite sensor for door (2006-06-20),

8. 7063200 - Pulsation dampening apparatus and clutch master cylinder (2006-06-20),

9. 7059237 - Multiple-directional switching valve (2006-06-13),

10. 7032378 - Flow divider system and valve device of the same (2006-04-25),

11. 6973784 - Hydraulic master cylinder (2005-12-13),

12. 6923109 - Mounting mechanism for a push rod of a master cylinder (2005-08-02),

13. 6840340 - Electric-powered vehicle (2005-01-11),

14. 6799424 - Hydraulic circuit (2004-10-05),

15. 6678999 - Object sensing system for use with automatic swing door (2004-01-20),

Nabco Limited is a leading provider of cutting-edge technology solutions for businesses worldwide. With over 20 years of experience, we specialize in providing comprehensive IT services, including software development, cloud computing, cybersecurity, and digital transformation. Our team of experts is dedicated to delivering innovative and reliable solutions that help businesses thrive in the digital age. Visit our website to learn more about our services and how we can help your company succeed.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

60 Patents

#18 in Kobe

#1,532 in Japan

#12,071 in the World

Nabco Limited

Forward Citations = 942

74 inventors:

Osamu Akamatsu (5 out of 17 patents)

Masahiko Okuda (4 out of 13 patents)

Norio Shiraishi (4 out of 4 patents)

4. Yasukazu Furuichi (4 out of 4 patents)

5. Yoshinobu Ishida (4 out of 4 patents)

Please report any incorrect information to [email protected]

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