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For the Inventor, By the Inventor

Kyoto, Japan

Gunze Limited

Calculating rank
USPTO Granted Patents = 161

% Expired Patents = 24.8



Trademarks = 17

Forward Citations = 9,831

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347 inventors (with patents filed for the assignee):

goldMedal Takashi Kuraoka (10 out of 10 patents)

silverMedal Naoyuki Maruichi (9 out of 9 patents)

bronzeMedal Junya Kanetake (8 out of 8 patents)

4.  Naoki Nishiura (8 out of 8 patents)

5.  Shinichiro Morita (7 out of 7 patents)

6.  Yoshito Ikada (7 out of 31 patents)

7.  Hisao Itaya (7 out of 7 patents)

8.  Masakazu Suzuki (6 out of 61 patents)

9.  Koji Yamauchi (6 out of 6 patents)

10.  Hiroki Kuriu (6 out of 6 patents)

11.  Makoto Kawahara (5 out of 5 patents)

12.  Naoki Ohno (5 out of 5 patents)

13.  Shojiro Matsuda (5 out of 5 patents)

14.  Atsushi Okada (5 out of 5 patents)

15.  Takeshi Shimamoto (5 out of 5 patents)


Core Competencies:
Artificial Blood Vessel
Guide Wire
Tissue Regeneration
Heat-Shrinkable Film
Lithium Ion Battery
Biodegradable Polymer
Electromagnetic Shielding
Medical Film
Fluororesin Tube
Suture Reinforcement
Touch Panel
Current Collector

161 patents:

1. 12685534 - Tissue reinforcement material loader and tissue reinforcement material loading kit (2026-07-21),
2. 12599375 - Medical material (2026-04-14),
3. 12533838 - Tearable tube formed from fluororesin (2026-01-27),
4. 12527893 - Structure reinforcing material (2026-01-20),
5. 12499464 - Management system (2025-12-16),
6. 12239303 - Medical material (2025-03-04),
7. 12015140 - Method for producing resin collector for negative electrodes, method for producing negative electrode for lithium ion batteries, and method for producing lithium ion battery (2024-06-18),
8. 11958272 - Heat-shrinkable multilayer film and heat-shrinkable label (2024-04-16),
9. 11931479 - Artificial blood vessel (2024-03-19),
10. 11802199 - Thermoplastic fluororesin tube (2023-10-31),
11. 11642875 - Heat-shrinkable multilayer film and heat-shrinkable label (2023-05-09),
12. 11571197 - In-tube transit object (2023-02-07),
13. 11484313 - Staple reinforcement for surgical stapler (2022-11-01),
14. 11453209 - Heat-shrinking multilayer film and heat-shrinking label (2022-09-27),
15. 11355758 - Current collector for lithium ion battery and manufacturing method of the current collector (2022-06-07),
Company Overview
Gunze Limited, headquartered in Kyoto, Japan, specializes in the development and manufacturing of advanced medical materials. The company focuses on innovative technologies such as artificial blood vessels, guide wires, and tissue regeneration solutions. Additionally, Gunze is engaged in producing heat-shrinkable films, biodegradable polymers, and materials for lithium-ion batteries and electromagnetic shielding. Their commitment to research and development positions them as a key player in the medical materials sector, contributing to advancements in healthcare technologies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

161 Patents

#31 in Kyoto 615-0031

#822 in Japan

#5,128 in the World

Kyoto, JP
Kyoto, Japan

Gunze Limited

Forward Citations = 9,831

347 inventors:

goldMedal Takashi Kuraoka (10 out of 10 patents)

silverMedal Naoyuki Maruichi (9 out of 9 patents)

bronzeMedal Junya Kanetake (8 out of 8 patents)

4.  Naoki Nishiura (8 out of 8 patents)

5.  Shinichiro Morita (7 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gunze Limited. Retrieved from https://idiyas.com/company/gunze

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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