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For the Inventor, By the Inventor

Tokyo, Japan

Ihara Science Corporation

USPTO Granted Patents = 14

% Expired Patents = 14.3


Trademarks = 2

Forward Citations = 18

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21 inventors (with patents filed for the assignee):

goldMedal Shinji Fukaya (5 out of 8 patents)

silverMedal Miyoshi Kimura (5 out of 5 patents)

bronzeMedal Osamu Yamaguchi (3 out of 61 patents)

4.  Hideichi Tsuboi (2 out of 2 patents)

5.  Tatsuya Murakawa (2 out of 2 patents)

6.  Daisuke Nishida (2 out of 2 patents)

7.  Yoshitaka Hara (1 out of 27 patents)

8.  Yuji Yamaguchi (1 out of 10 patents)

9.  Toshimitsu Suzuki (1 out of 1 patent)

10.  Masaji Nagao (1 out of 1 patent)

11.  Tatsuya Hayashi (1 out of 6 patents)

12.  Susumu Karasawa (1 out of 1 patent)

13.  Kazuhiro Oya (1 out of 4 patents)

14.  Toshiyuki Himi (1 out of 2 patents)

15.  Yusuke Nagase (1 out of 1 patent)


14 patents:

1. D1126372 - Pipe fitting (2026-05-12),
2. D1120243 - Pipe fitting (2026-03-24),
3. 12270473 - Coupling structure (2025-04-08),
4. 12025245 - Joint structure (2024-07-02),
5. 11988306 - Joining structure, pipe joint, and method for forming joining structure (2024-05-21),
6. 11338314 - Nozzle device and nozzle unit (2022-05-24),
7. 11092267 - Fitting, ferrule, and ferrule manufacturing method (2021-08-17),
8. 10436329 - Valve having a stem spaced away from a valve seat and configured to rotate around an axis parallel with an opening surface of the valve seat (2019-10-08),
9. 9829129 - Fitting, ferrule, and ferrule manufacturing method (2017-11-28),
10. 9512946 - Joint (2016-12-06),
11. 8979137 - Coupling ring (2015-03-17),
12. 8491017 - Fitting structure including a pair of connection pipes and a clamp ring (2013-07-23),
13. 8387435 - Elbow material production device and production method thereof (2013-03-05),
14. 8152205 - Stainless-steel fitting for resin tubes (2012-04-10),
Company Overview
Ihara Science Corporation, based in Tokyo, specializes in advanced materials and innovative technologies. The company focuses on the development and manufacturing of high-performance products for various industries, including electronics and pharmaceuticals. With a strong emphasis on research and development, Ihara Science aims to push the boundaries of material science, contributing to advancements in fields such as nanotechnology and biotechnology. Their commitment to innovation positions them as a key player in the global market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Ihara Science Corporation USPTO Patent Assignee Logo
14 Patents

#1,599 in Tokyo

#3,584 in Japan

#42,290 in the World

Tokyo, JP
Tokyo, Japan

Ihara Science Corporation

Forward Citations = 18

21 inventors:

goldMedal Shinji Fukaya (5 out of 8 patents)

silverMedal Miyoshi Kimura (5 out of 5 patents)

bronzeMedal Osamu Yamaguchi (3 out of 61 patents)

4.  Hideichi Tsuboi (2 out of 2 patents)

5.  Tatsuya Murakawa (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ihara Science Corporation. Retrieved from https://idiyas.com/company/ihara-science

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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