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Osaka Prefecture

USPTO Granted Patents = 17

% Expired Patents = 35.3

Forward Citations = 123

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59 inventors (with patents filed for the assignee):

Tomoyuki Tanaka (5 out of 17 patents)

Katsutoshi Izumi (5 out of 10 patents)

Keiji Mine (5 out of 35 patents)

4. Yoshiaki Ohbayashi (5 out of 31 patents)

5. Motoi Nakao (5 out of 7 patents)

6. Seisaku Hirai (5 out of 8 patents)

7. Fumihiko Jobe (5 out of 7 patents)

8. Souichi Ogawa (3 out of 3 patents)

9. Masaru Inoue (3 out of 6 patents)

10. Takao Sugioka (3 out of 6 patents)

11. Shinichi Tanaka (2 out of 18 patents)

12. Toshikazu Nosaka (2 out of 8 patents)

13. Takumi Sone (2 out of 2 patents)

14. Yukihiro Sato (2 out of 2 patents)

15. Kei Demizu (2 out of 2 patents)

17 patents: Sort by Forward Citations

1. 7790228 - Method for high-efficiency synthesis of carbon nanostructure (2010-09-07),

2. 7393763 - Manufacturing method of monocrystalline gallium nitride localized substrate (2008-07-01),

3. 7291229 - Method of surface treatment of titanium metal (2007-11-06),

4. 7281931 - Electrical connector for connecting electrical units, electrical device, and production method for producing electrical device (2007-10-16),

5. 7128788 - Manufacturing apparatus for buried insulating layer-type semiconductor silicon carbide substrate (2006-10-31),

6. 7084049 - Manufacturing method for buried insulating layer-type semiconductor silicon carbide substrate (2006-08-01),

7. 7077875 - Manufacturing device for buried insulating layer type single crystal silicon carbide substrate (2006-07-18),

8. 6927144 - Method for manufacturing buried insulating layer type single crystal silicon carbide substrate (2005-08-09),

9. 6908589 - High manganese cast iron containing spheroidal vanadium carbide and method for making therof (2005-06-21),

10. 6105417 - Gas sensor (2000-08-22),

11. 5518678 - Adsorptive honeycomb-shaped ceramic structure and method for its (1996-05-21),

12. 5466305 - Method of treating the surface of titanium (1995-11-14),

13. 5089223 - Fe-Cr-Ni-Al ferritic alloys (1992-02-18),

14. 4942379 - Superconductor for magnetic field shield (1990-07-17),

15. 4920011 - Magnetic field shield including a superconductive film (1990-04-24),

Company Overview

Osaka Prefecture, located in the Kansai region of Japan, is a vibrant administrative area known for its rich cultural heritage and economic significance. The prefecture focuses on various domains including urban development, public health, and environmental sustainability. It plays a pivotal role in fostering innovation and supporting local industries, particularly in technology and manufacturing sectors. Osaka Prefecture is committed to enhancing the quality of life for its residents through strategic initiatives and community engagement.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

17 Patents

#349 in Osaka

#3,230 in Japan

#35,948 in the World

Osaka Prefecture

Forward Citations = 123

59 inventors:

Tomoyuki Tanaka (5 out of 17 patents)

Katsutoshi Izumi (5 out of 10 patents)

Keiji Mine (5 out of 35 patents)

4. Yoshiaki Ohbayashi (5 out of 31 patents)

5. Motoi Nakao (5 out of 7 patents)

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