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For the Inventor, By the Inventor

Tokyo, Japan

Tohcello Co., Ltd.


USPTO Granted Patents = 10

% Expired Patents = 80.0


Forward Citations = 110

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18 inventors (with patents filed for the assignee):

goldMedal Junichi Narita (5 out of 5 patents)

silverMedal Akira Nomoto (3 out of 7 patents)

bronzeMedal Tomoyoshi Hakamata (3 out of 3 patents)

4.  Osamu Nakamura (3 out of 3 patents)

5.  Hiroyuki Wakaki (3 out of 4 patents)

6.  Kou Tsurugi (2 out of 7 patents)

7.  Yoshihisa Inoue (2 out of 8 patents)

8.  Tohru Sawai (2 out of 2 patents)

9.  Masanobu Sato (1 out of 52 patents)

10.  Isao Hara (1 out of 26 patents)

11.  Hiroyoshi Watanabe (1 out of 9 patents)

12.  Hiroyuki Wakai (1 out of 1 patent)

13.  Nobuhiro Tanabe (1 out of 1 patent)

14.  Eiichi Taguchi (1 out of 1 patent)

15.  Yoshihiro Yamamoto (1 out of 17 patents)


10 patents:

1. 8809490 - Method for producing unsaturated carboxylic acid-modified vinyl alcohol polymer, and gas barrier film or gas barrier laminate using the same (2014-08-19),
2. 8703298 - Gas-barrier film, gas-barrier layered body, and process for producing same (2014-04-22),
3. 8362157 - Polylactic acid composition and molding comprising the composition (2013-01-29),
4. 8337991 - Moldings comprising a polylactic acid composition (2012-12-25),
5. 8097345 - Gas barrier film, gas barrier laminate and method for manufacturing film or laminate (2012-01-17),
6. 7993745 - Polylactic acid stretched film (2011-08-09),
7. 7651779 - Resin composition having easy-openable property (2010-01-26),
8. 7087313 - Biaxially stretched polylactic acid multilayer film and the use thereof (2006-08-08),
9. 6521336 - Aliphatic polyester compositions, film made thereof and laminates thereof (2003-02-18),
10. 6352784 - Wood decorative material coated with resin composite film and process for producing the same (2002-03-05),
Company Overview
Tohcello Co., Ltd. is a Tokyo-based company specializing in the development and manufacturing of advanced materials and chemical products. The organization focuses on innovative solutions for various industries, including electronics, automotive, and healthcare. Tohcello is recognized for its expertise in polymer technology and surface treatment, contributing to enhanced performance and sustainability in applications ranging from semiconductor manufacturing to medical devices. Its commitment to research and development positions it as a key player in the materials science sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

10 Patents

#1,914 in Tokyo

#4,401 in Japan

#56,047 in the World

Tokyo, JP
Tokyo, Japan

Tohcello Co., Ltd.

Forward Citations = 110

18 inventors:

goldMedal Junichi Narita (5 out of 5 patents)

silverMedal Akira Nomoto (3 out of 7 patents)

bronzeMedal Tomoyoshi Hakamata (3 out of 3 patents)

4.  Osamu Nakamura (3 out of 3 patents)

5.  Hiroyuki Wakaki (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tohcello Co., Ltd.. Retrieved from https://idiyas.com/company/tohcello-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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