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For the Inventor, By the Inventor

Ehime, Japan

Uni-Charm Co., Ltd.


USPTO Granted Patents = 37

% Expired Patents = 45.9



Forward Citations = 982

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28 inventors (with patents filed for the assignee):

goldMedal Toshifumi Otsubo (14 out of 112 patents)

silverMedal Shunsuke Takino (10 out of 43 patents)

bronzeMedal Akihide Ninomiya (4 out of 17 patents)

4.  Akihisa Shiomi (4 out of 8 patents)

5.  Hiroki Yamamoto (4 out of 89 patents)

6.  Nariaki Shimoe (4 out of 34 patents)

7.  Kyoko Ito (4 out of 5 patents)

8.  Yasuhiko Kenmochi (3 out of 31 patents)

9.  Michiyo Matsushita (3 out of 11 patents)

10.  Yoshinori Tanaka (3 out of 202 patents)

11.  Kyota Saito (2 out of 12 patents)

12.  Takanori Yano (2 out of 11 patents)

13.  Takaaki Shimada (2 out of 26 patents)

14.  Toru Sasaki (2 out of 23 patents)

15.  Masamitsu Yamamoto (2 out of 18 patents)


Core Competencies:
Biodegradable Plastic Film
Pull-On Disposable Diaper
Pants-Type Disposable Article
Tape Fasteners
Indicator Element
Disposable Wipe-Out Sheet
Breathable Composite Sheet
Sanitary Napkins
Absorbent Article
Folding Method
Disposable Pants
Process for Making

37 patents:

1. 8182901 - Printed biodegradable plastic film (2012-05-22),
2. 8034040 - Pull-on disposable diaper (2011-10-11),
3. 7909807 - Pants-type disposable wearing article (2011-03-22),
4. 7892219 - Disposable wearing article provided with tape fasteners (2011-02-22),
5. 7758558 - Pants-type disposable wearing article (2010-07-20),
6. 7458960 - Pull-on disposable diaper (2008-12-02),
7. 7449015 - Pants-type disposable wearing article (2008-11-11),
8. 7390372 - Process for attaching indicator element to disposable garment (2008-06-24),
9. 7329244 - Pull-on disposable diaper (2008-02-12),
10. 7322968 - Disposable wearing article and process for making the same (2008-01-29),
11. 7318798 - Apparatus and method for folding and tucking crotch region of disposable diaper (2008-01-15),
12. 7226437 - Pull-on disposable diaper (2007-06-05),
13. 7220251 - Pants-type disposable wearing article (2007-05-22),
14. 7217261 - Pull-on disposable wearing article (2007-05-15),
15. 7214287 - Process for continuously making disposable wearing articles (2007-05-08),
Company Overview
Uni-Charm Co., Ltd. is a leading manufacturer specializing in hygiene and health care products. The company develops a diverse range of items, including disposable diapers, feminine hygiene products, and adult incontinence solutions, focusing on enhancing comfort and quality of life. With its headquarters in Ehime, Japan, Uni-Charm leverages advanced research and technology to innovate in the fields of materials science and consumer health, aiming to meet the evolving needs of consumers globally.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

37 Patents

#6 in Ehime

#2,059 in Japan

#18,299 in the World

Ehime, JP
Ehime, Japan

Uni-Charm Co., Ltd.

Forward Citations = 982

28 inventors:

goldMedal Toshifumi Otsubo (14 out of 112 patents)

silverMedal Shunsuke Takino (10 out of 43 patents)

bronzeMedal Akihide Ninomiya (4 out of 17 patents)

4.  Akihisa Shiomi (4 out of 8 patents)

5.  Hiroki Yamamoto (4 out of 89 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Uni-Charm Co., Ltd.. Retrieved from https://idiyas.com/company/uni-charm-company

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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