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Kawasaki, Japan

Nitsuko Corporation

USPTO Granted Patents = 86

Trademarks = 1

Forward Citations = 882

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79 inventors (with patents filed for the assignee):

Eiichi Taniguchi (8 out of 33 patents)

Yoshio Sasaki (8 out of 8 patents)

Hiroshi Inaba (6 out of 6 patents)

4. Tadamine Toh (6 out of 29 patents)

5. Yoshiji Tanimoto (5 out of 6 patents)

6. Minoru Okumura (4 out of 4 patents)

7. Tsuneji Kimeda (4 out of 5 patents)

8. Tadahiro Yoshida (4 out of 4 patents)

9. Toshio Nishimura (4 out of 4 patents)

10. Hiroshi Yamagishi (4 out of 4 patents)

11. Akiyoshi Hattori (4 out of 4 patents)

12. Iwamasa Nishikado (4 out of 4 patents)

13. Shinji Nakamura (3 out of 10 patents)

14. Yoshihiro Harakawa (3 out of 4 patents)

15. Koji Izawa (3 out of 4 patents)

Core Competencies:

Telephone Set

Key Telephone System

Point Of Sale Terminal

Voice Signal Transmission

Ringing Signal Control

Digital Data Capability

Cordless Telephone

Data Transmission System

Sales Processing Terminal

Intercall Console

Multifunction Telephone

Surge Voltage Suppression

86 patents: Sort by Forward Citations

1. 7344069 - POS system (2008-03-18),

2. D436353 - Switching apparatus for telephone set (2001-01-17),

3. 6145683 - Set-up assembly of casing for electric appliances (2000-11-14),

4. 5933807 - Screen control apparatus and screen control method (1999-08-03),

5. 5926105 - Router having a security function (1999-07-20),

6. D410654 - Switching apparatus for telephone set (1999-06-08),

7. 5823504 - Adjusting mechanism for adjusting the installation angle of appliances (1998-10-20),

8. D395048 - Switching apparatus for telephone set (1998-06-09),

9. D389813 - Sales business terminal unit (1998-01-27),

10. D375497 - Telephone set (1996-11-12),

11. D375309 - Telephone set (1996-11-05),

12. D375308 - Telehone set (1996-11-05),

13. D375100 - Extension ringing console apparatus for a telephone set (1996-10-29),

14. 5463676 - Key telephone system with a voice storage equipment (1995-10-31),

15. 5426695 - Ringing signal control circuit capable of suppressing surge voltage (1995-06-20),

Company Overview

Nitsuko Corporation, headquartered in Kawasaki, Japan, specializes in the development and manufacturing of advanced telephone systems. The company focuses on a range of technologies including key telephone systems, cordless telephones, and point of sale terminals. Nitsuko is recognized for its innovations in voice signal transmission and ringing signal control, as well as digital data capabilities and data transmission systems. With a commitment to enhancing communication solutions, Nitsuko plays a significant role in the telecommunications sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

86 Patents

#20 in Kawasaki

#1,241 in Japan

#8,873 in the World

Kawasaki, Japan

Nitsuko Corporation

Forward Citations = 882

79 inventors:

Eiichi Taniguchi (8 out of 33 patents)

Yoshio Sasaki (8 out of 8 patents)

Hiroshi Inaba (6 out of 6 patents)

4. Tadamine Toh (6 out of 29 patents)

5. Yoshiji Tanimoto (5 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nitsuko Corporation. Retrieved from https://idiyas.com/company/nitsuko

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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