% Expired Patents = 33.3

Forward Citations = 11

Loading Chart...

15 inventors (with patents filed for the assignee):

Hidekazu Takizawa (3 out of 3 patents)

Takuya Kurosawa (2 out of 6 patents)

Syuzo Aoki (2 out of 8 patents)

4. Takuya Oda (2 out of 10 patents)

5. Shoji Koizumi (2 out of 4 patents)

6. Yutaka Komatsu (2 out of 2 patents)

7. Shinichi Anzawa (2 out of 2 patents)

8. Shinya Kimura (1 out of 4 patents)

9. Masashi Fujinaga (1 out of 1 patent)

10. Toshio Tanimoto (1 out of 2 patents)

11. Fumiaki Mochizuki (1 out of 5 patents)

12. Makoto Minamishima (1 out of 1 patent)

13. Tokuo Kumagai (1 out of 1 patent)

14. Shoji Toba (1 out of 1 patent)

15. Keigo Okubo (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 9920232 - Method of manufacturing metal composite material, metal composite material, method of manufacturing heat dissipating component, and heat dissipating component (2018-03-20),

2. 9101981 - Method of manufacturing metal composite material, metal composite material, method of manufacturing heat dissipating component, and heat dissipating component (2015-08-11),

3. 8507252 - Plant disease controlling composition, plant disease controlling method, and novel microorganism (2013-08-13),

4. 7892653 - Titanium alloy composite material, titanium clad material using the titanium alloy composite material, and method of producing the titanium clad material (2011-02-22),

5. 5725849 - Communication disruptant for controlling Pandemis heparana (1998-03-10),

6. 4571287 - Electrolytically producing anodic oxidation coat on Al or Al alloy (1986-02-18),

Company Overview

Nagano Prefecture, located in the Chubu region of Japan, is known for its picturesque landscapes, hot springs, and world-class ski resorts. The region is home to the iconic snow monkeys of Jigokudani Monkey Park and the historic Matsumoto Castle. Nagano also hosted the 1998 Winter Olympics, showcasing its prowess in winter sports. The prefecture is a popular destination for both domestic and international tourists, offering a mix of outdoor activities, cultural attractions, and delicious local cuisine.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#81 in Nagano

#5,989 in Japan

Nagano, Japan

Nagano Prefecture

Forward Citations = 11

15 inventors:

Hidekazu Takizawa (3 out of 3 patents)

Takuya Kurosawa (2 out of 6 patents)

Syuzo Aoki (2 out of 8 patents)

4. Takuya Oda (2 out of 10 patents)

5. Shoji Koizumi (2 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nagano Prefecture. Retrieved from https://idiyas.com/company/nagano-prefecture

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]