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For the Inventor, By the Inventor

Tokyo, Japan

Oji Seitai Kaisha, Ltd.

Calculating rank
USPTO Granted Patents = 7

% Expired Patents = 14.3

Forward Citations = 60

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14 inventors (with patents filed for the assignee):

goldMedal Hiroshi Iwasaki (3 out of 21 patents)

silverMedal Masahiro Tsukuda (3 out of 4 patents)

bronzeMedal Tadao Masuda (3 out of 3 patents)

4.  Shigeru Doiura (2 out of 2 patents)

5.  Kaoru Kawanishi (2 out of 2 patents)

6.  Katsumi Hayakawa (2 out of 3 patents)

7.  Akira Kurachi (1 out of 5 patents)

8.  Masahiko Nakaishi (1 out of 1 patent)

9.  Yasumitsu Miyata (1 out of 1 patent)

10.  Kunio Bizen (1 out of 1 patent)

11.  Takeyoshi Ono (1 out of 1 patent)

12.  Eiji Bando (1 out of 1 patent)

13.  Shiro Okamura (1 out of 1 patent)

14.  Toshiya Hara (1 out of 1 patent)


7 patents:

1. 7192652 - Rust preventive film for stretch packaging (2007-03-20),
2. 5654802 - Method and device for inspecting bags (1997-08-05),
3. 5408808 - Automatic full-web stretch-wrapping apparatus (1995-04-25),
4. 5282346 - Unwrapping apparatus with swing arms and grippers (1994-02-01),
5. 5148651 - Unwrapping apparatus with swing arms and grippers (1992-09-22),
6. 4818328 - Process for manufacturing sacks, bags, and the like (1989-04-04),
7. 4263845 - Method and apparatus for printing the surface of a bag which has been (1981-04-28),
Company Overview
Oji Seitai Kaisha, Ltd. is a Japanese company specializing in health and wellness products. With a focus on natural remedies and traditional Japanese healing techniques, the company offers a wide range of products including supplements, skincare, and therapeutic devices. Oji Seitai Kaisha is committed to promoting holistic well-being and improving the quality of life for its customers.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

7 Patents

#2,290 in Tokyo

#5,462 in Japan

Tokyo, JP
Tokyo, Japan

Oji Seitai Kaisha, Ltd.

Forward Citations = 60

14 inventors:

goldMedal Hiroshi Iwasaki (3 out of 21 patents)

silverMedal Masahiro Tsukuda (3 out of 4 patents)

bronzeMedal Tadao Masuda (3 out of 3 patents)

4.  Shigeru Doiura (2 out of 2 patents)

5.  Kaoru Kawanishi (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Oji Seitai Kaisha, Ltd.. Retrieved from https://idiyas.com/company/oji-seitai-kaisha

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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