% Expired Patents = 7.7

Forward Citations = 148

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6 inventors (with patents filed for the assignee):

Hisayuki Kayanoki (7 out of 7 patents)

Fujio Sawaragi (6 out of 7 patents)

Masaaki Funaki (3 out of 3 patents)

4. Masayuki Takaguchi (1 out of 1 patent)

5. Hizashi Sonezaki (1 out of 1 patent)

6. Hiroyoshi Nanri (1 out of 3 patents)

13 patents: Sort by Forward Citations

1. 6946498 - Coating composition and article coated with the composition (2005-09-20),

2. 6890644 - Transparent laminate, plastic lens for eyeglass and primer composition (2005-05-10),

3. 6852368 - Hard coating composition and resin product with hard coat (2005-02-08),

4. 6703131 - Coated article (2004-03-09),

5. 6440568 - Plastic lenses and primer composition used for coating the same (2002-08-27),

6. 6177138 - Abrasion-resistant coating composition for acrylic resin molded article (2001-01-23),

7. 5963373 - Primer composition (1999-10-05),

8. 5858077 - Coating composition capable of yielding a cured product having a high (1999-01-12),

9. 5766739 - Panel composed of synthetic resins and coated with an antifogging layer (1998-06-16),

10. 5654090 - Coating composition capable of yielding a cured product having a high (1997-08-05),

11. 5367019 - Coating composition and article coated thereby (1994-11-22),

12. 5250359 - Coating composition and resin molded article coated thereby (1993-10-05),

13. 5191045 - Coating composition and resin molded article coated thereby (1993-03-02),

Company Overview

Nippon Arc Co., Ltd. is a Japanese company based in Chiba, specializing in advanced manufacturing and development of precision machinery and components. The organization focuses on innovative solutions in various sectors, including automotive and industrial applications. With a commitment to quality and technological advancement, Nippon Arc engages in research and development to enhance product performance and efficiency, contributing to the evolution of manufacturing processes in Japan and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#47 in Chiba

#3,752 in Japan

#45,081 in the World

Chiba, Japan

Nippon Arc Co., Ltd.

Forward Citations = 148

6 inventors:

Hisayuki Kayanoki (7 out of 7 patents)

Fujio Sawaragi (6 out of 7 patents)

Masaaki Funaki (3 out of 3 patents)

4. Masayuki Takaguchi (1 out of 1 patent)

5. Hizashi Sonezaki (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Arc Co., Ltd.. Retrieved from https://idiyas.com/company/nippon-arc-company

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]