% Expired Patents = 42.9

CIPO Patents = 1

EPO Patents = 4

Forward Citations = 31

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7 inventors (with patents filed for the assignee):

Shigeki Kawakami (3 out of 4 patents)

Tatsunori Kida (1 out of 2 patents)

Manabu Matsui (1 out of 7 patents)

4. Yoshiji Usui (1 out of 2 patents)

5. Akihiko Kawanaka (1 out of 1 patent)

6. Toshio Kamisasa (1 out of 1 patent)

7. Hiroshi Okaya (1 out of 1 patent)

8. Hiroko Makihara (0 patent)

9. Kazuyuki Ohnishi (0 patent)

10. Hiroko Makihara (0 patent)

11. Yoshiji Usui (0 patent)

7 patents: Sort by Forward Citations

1. 9903053 - Fibers for reinforcing cured article and cured article using same (2018-02-27),

2. 9356272 - Polyolefin-based split-type conjugate fiber, fiber assembly and battery separator using the same and method for producing the same (2016-05-31),

3. 9249052 - Fiber for reinforcing cement, and cured cement produced using same (2016-02-02),

4. 8968859 - Heat extensible fiber (2015-03-03),

5. 8911753 - Skin-covering sheet for impregnation with cosmetic preparation and face mask (2014-12-16),

6. 8889573 - Fiber assembly, composite of electro conductive substrate and fiber assembly, and production methods thereof (2014-11-18),

7. 8268444 - Crimping composite fiber and fibrous mass comprising the same (2012-09-18),

Company Overview

Daiwabo Polytec Co., Ltd. is a Japan-based company primarily engaged in the manufacture and sale of advanced materials and products. The company offers a wide range of products including functional films, industrial materials, synthetic resins, and electronic materials. With a focus on innovation and quality, Daiwabo Polytec aims to create value for customers and contribute to a sustainable society.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#596 in Osaka

#5,456 in Japan

Osaka, Japan

Daiwabo Polytec Co., Ltd.

Forward Citations = 31

7 inventors:

Shigeki Kawakami (3 out of 4 patents)

Tatsunori Kida (1 out of 2 patents)

Manabu Matsui (1 out of 7 patents)

4. Yoshiji Usui (1 out of 2 patents)

5. Akihiko Kawanaka (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Daiwabo Polytec Co., Ltd.. Retrieved from https://idiyas.com/company/daiwabo-polytec-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]

1 patent (CIPO):

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]

4 patents (EPO):

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]