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For the Inventor, By the Inventor

Yokohama, Japan

Piolax Medical Devices, Inc.

Calculating rank
USPTO Granted Patents = 14

% Expired Patents = 57.1


Trademarks = 2

Forward Citations = 48

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25 inventors (with patents filed for the assignee):

goldMedal Shinichi Sakai (4 out of 4 patents)

silverMedal Satoshi Yoshita (2 out of 2 patents)

bronzeMedal Yasuo Yoshikawa (2 out of 4 patents)

4.  Yoshihide Toyokawa (2 out of 2 patents)

5.  Kyosuke Shirakawa (2 out of 2 patents)

6.  Yasuaki Arai (2 out of 3 patents)

7.  Yuuki Inami (2 out of 2 patents)

8.  Hiroyuki Asano (2 out of 11 patents)

9.  Masaru Tanaka (1 out of 17 patents)

10.  Toshihiro Kimura (1 out of 2 patents)

11.  Takayuki Shindo (1 out of 1 patent)

12.  Chikako Sato (1 out of 2 patents)

13.  Makiko Aoki (1 out of 1 patent)

14.  Risa Sase (1 out of 1 patent)

15.  Hirofumi Kawamoto (1 out of 1 patent)


14 patents:

1. 11484647 - Medicinal liquid injection port and medicinal liquid injection device (2022-11-01),
2. 11160992 - Light-emitting capsule treatment tool (2021-11-02),
3. 10278843 - Stent (2019-05-07),
4. 10080640 - Stent to be placed in bile duct (2018-09-25),
5. 9901357 - Body cavity foreign matter capture instrument (2018-02-27),
6. 9636478 - Medical tube (2017-05-02),
7. 9480550 - Highly elastic stent and production method for highly elastic stent (2016-11-01),
8. 9393133 - Abdominal cavity-vein shunt stent (2016-07-19),
9. 8986328 - Medical gripping device (2015-03-24),
10. 8566995 - Endoscopic duct cleaning tool (2013-10-29),
11. 8114047 - Drug solution infusion catheter (2012-02-14),
12. 8052740 - Stent including a marker fitted to a frame portion (2011-11-08),
13. 6478752 - Catheter guide wire and production method for the same (2002-11-12),
14. 6391018 - Catheter (2002-05-21),
Company Overview
Piolax Medical Devices, Inc. is a prominent player in the medical device industry, headquartered in Yokohama, Japan. The company specializes in the development and manufacturing of innovative medical devices, focusing on enhancing patient care and improving clinical outcomes. With a commitment to quality and technological advancement, Piolax engages in extensive research and development across various medical fields, aiming to address the evolving needs of healthcare professionals and patients alike.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

14 Patents

#72 in Yokohama

#3,589 in Japan

#42,384 in the World

Yokohama, JP
Yokohama, Japan

Piolax Medical Devices, Inc.

Forward Citations = 48

25 inventors:

goldMedal Shinichi Sakai (4 out of 4 patents)

silverMedal Satoshi Yoshita (2 out of 2 patents)

bronzeMedal Yasuo Yoshikawa (2 out of 4 patents)

4.  Yoshihide Toyokawa (2 out of 2 patents)

5.  Kyosuke Shirakawa (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Piolax Medical Devices, Inc.. Retrieved from https://idiyas.com/company/piolax-medical-devices

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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