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For the Inventor, By the Inventor

Shizuoka, Japan

Shizuoka Prefecture


USPTO Granted Patents = 15

% Expired Patents = 26.7



Forward Citations = 38

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58 inventors (with patents filed for the assignee):

goldMedal Masahiro Endo (3 out of 17 patents)

silverMedal Yasuto Akiyama (3 out of 4 patents)

bronzeMedal Ryuji Hisanaga (3 out of 4 patents)

4.  Akira Asai (2 out of 5 patents)

5.  Naohisa Ogo (2 out of 5 patents)

6.  Keiichi Hatakeyama (2 out of 2 patents)

7.  Osamu Takahashi (2 out of 39 patents)

8.  Kimihiko Kato (2 out of 2 patents)

9.  Kenji Matsuno (2 out of 2 patents)

10.  Tadashi Ashizawa (2 out of 2 patents)

11.  Tadashi Okawara (2 out of 2 patents)

12.  Ken Yamaguchi (2 out of 2 patents)

13.  Akira Oosawa (2 out of 36 patents)

14.  Taka-Aki Sato (1 out of 12 patents)

15.  Fumiaki Koizumi (1 out of 11 patents)


15 patents:

1. 11433141 - Anti-B7-H4 antibody (2022-09-06),
2. 11280792 - Apparatus for detecting the degree of malignancy of each of circulating tumor cells (2022-03-22),
3. 10641773 - Biomarker for diagnosis of extrahepatic bile duct carcinoma, intrahepatic bile duct carcinoma, or gallbladder carcinoma (2020-05-05),
4. 10430905 - Case search device and method (2019-10-01),
5. 10018539 - System and method for retrieval treatment of proteins in formalin-fixed paraffin-embedded tissue section (2018-07-10),
6. 9415463 - Laser marking method (2016-08-16),
7. 9345243 - Chemicals composition for reducing stress on plant (2016-05-24),
8. 8796320 - 1,3,4-Oxadiazole-2-carboxamide compound (2014-08-05),
9. 8466290 - STAT3 inhibitor containing quinolinecarboxamide derivative as active ingredient (2013-06-18),
10. 8410096 - Antitumor agent, kit and method of treating cancer (2013-04-02),
11. 8380013 - Case image search apparatus, method and computer-readable recording medium (2013-02-19),
12. 8260810 - Case image registration apparatus, method and recording medium, and case image search apparatus, method, recording medium and system (2012-09-04),
13. 7404377 - Method of rearing, cultivating or stocking crustacea and crustacea reared, cultivated or stocked by the method (2008-07-29),
14. 5919647 - Methods and apparatuses for examining pathogen resistance of plant, for (1999-07-06),
15. 4425452 - Coating color for paper and method for preparation of the same (1984-01-10),
Company Overview
Shizuoka Prefecture, located in Japan, is renowned for its diverse economic landscape, which includes agriculture, manufacturing, and tourism. The region is particularly famous for its production of high-quality green tea and is home to various industries such as automotive, electronics, and precision machinery. Shizuoka also emphasizes innovation in environmental technologies and sustainable practices, leveraging its natural resources and scenic landscapes to promote eco-tourism and regional development.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

15 Patents

#48 in Shizuoka

#3,443 in Japan

#39,921 in the World

Shizuoka, JP
Shizuoka, Japan

Shizuoka Prefecture

Forward Citations = 38

58 inventors:

goldMedal Masahiro Endo (3 out of 17 patents)

silverMedal Yasuto Akiyama (3 out of 4 patents)

bronzeMedal Ryuji Hisanaga (3 out of 4 patents)

4.  Akira Asai (2 out of 5 patents)

5.  Naohisa Ogo (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Shizuoka Prefecture. Retrieved from https://idiyas.com/company/shizuoka-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]
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