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For the Inventor, By the Inventor

Tokyo, Japan

Kawasumi Laboratories. Inc.


USPTO Granted Patents = 46

% Expired Patents = 26.1


Trademarks = 6

Forward Citations = 814

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107 inventors (with patents filed for the assignee):

goldMedal Seiichi Ono (6 out of 6 patents)

silverMedal Dai Yamanouchi (4 out of 7 patents)

bronzeMedal Masatoshi Watanabe (4 out of 5 patents)

4.  Yoshihiko Yokoi (3 out of 9 patents)

5.  Hiroaki Nomiyama (3 out of 3 patents)

6.  Takeo Juji (3 out of 3 patents)

7.  Shin Ishimaru (2 out of 7 patents)

8.  Hiroo Iwata (2 out of 12 patents)

9.  Motohiro Fukuda (2 out of 16 patents)

10.  Yusuke Tamai (2 out of 2 patents)

11.  Tomokazu Mukai (2 out of 2 patents)

12.  Yukihiro Kawano (2 out of 10 patents)

13.  Kouji Mori (2 out of 3 patents)

14.  Kazuaki Mitsudou (2 out of 3 patents)

15.  Yoshiharu Yoshikawa (2 out of 2 patents)


Core Competencies:
Medical Needle
Catheter
Biliary Stent
Microcatheter
Blood Collection Set
Stent Graft
Needle Guard
Therapeutic Material Delivery
Plasma Separation
Welding Device
Anti-Adhesion Material
Synthetic Composition

46 patents:

1. 11850409 - Medical needle (2023-12-26),
2. 11457938 - Foreign substance removing device and foreign substance collecting system (2022-10-04),
3. 11426192 - Catheter for removing foreign body in blood vessel (2022-08-30),
4. 11317922 - Filler material, filler delivery device, and filler delivery method (2022-05-03),
5. 11298504 - Medical device (2022-04-12),
6. 10603447 - Safety apparatus for medical needles (2020-03-31),
7. 9226812 - Biliary stent (2016-01-05),
8. 9067041 - Microcatheter (2015-06-30),
9. 8956307 - Blood collection set, sampling holder, and needlestick-preventive needle cover (2015-02-17),
10. 8900291 - Medical instrument and metal product (2014-12-02),
11. 8852259 - Indwelling device for tubular medical treatment instrument and front tip of indwelling device for tubular medical treatment instrument (2014-10-07),
12. 8821900 - Anti-adhesion material (2014-09-02),
13. 8137393 - Stent graft indwelling device and fixed chip (2012-03-20),
14. 8118786 - Guarded medical winged needle assembly (2012-02-21),
15. 7985251 - Stent (2011-07-26),
Company Overview
Kawasumi Laboratories, Inc., based in Tokyo, specializes in the development and manufacturing of advanced medical devices. The company focuses on innovative solutions in the fields of medical needles, catheters, biliary stents, microcatheters, and stent grafts. Additionally, it is engaged in the creation of anti-adhesion materials and therapeutic material delivery systems, as well as technologies for blood purification. With a commitment to enhancing patient care, Kawasumi Laboratories is at the forefront of medical technology advancements.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

46 Patents

#839 in Tokyo

#1,808 in Japan

#15,122 in the World

Tokyo, JP
Tokyo, Japan

Kawasumi Laboratories. Inc.

Forward Citations = 814

107 inventors:

goldMedal Seiichi Ono (6 out of 6 patents)

silverMedal Dai Yamanouchi (4 out of 7 patents)

bronzeMedal Masatoshi Watanabe (4 out of 5 patents)

4.  Yoshihiko Yokoi (3 out of 9 patents)

5.  Hiroaki Nomiyama (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kawasumi Laboratories. Inc.. Retrieved from https://idiyas.com/company/kawasumi-laboratories

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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