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For the Inventor, By the Inventor

Arnhem, Netherlands

Teijin Twaron B.v.


USPTO Granted Patents = 3

% Expired Patents = 66.7

Trademarks = 3

Forward Citations = 21

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5 inventors (with patents filed for the assignee):

goldMedal Hendrikus J M Busschers (2 out of 2 patents)

silverMedal Willem G Haanstra (2 out of 2 patents)

bronzeMedal Hans Lammers (1 out of 7 patents)

4.  Masanobu Iwama (1 out of 1 patent)

5.  Tsutomu Takahashi (1 out of 1 patent)


3 patents:

1. 6942757 - Process for preparing para-aromatic polyamide paper (2005-09-13),
2. 6672164 - Process for determining the polymer concentration in a spinning dope solution (2004-01-06),
3. 6606901 - Process for determining the acidity of a washing solution for fibers (2003-08-19),
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USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#21 in Arnhem

#1,673 in Netherlands

Arnhem, NL
Arnhem, Netherlands

Teijin Twaron B.v.

Forward Citations = 21

5 inventors:

goldMedal Hendrikus J M Busschers (2 out of 2 patents)

silverMedal Willem G Haanstra (2 out of 2 patents)

bronzeMedal Hans Lammers (1 out of 7 patents)

4.  Masanobu Iwama (1 out of 1 patent)

5.  Tsutomu Takahashi (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Teijin Twaron B.v.. Retrieved from https://idiyas.com/company/teijin-twaron-b-v

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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