Forward Citations = 5

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4 inventors (with patents filed for the assignee):

Jan Barchan (1 out of 1 patent)

Ulf Wilhelmson (1 out of 1 patent)

Hakan Bergstrom (1 out of 1 patent)

4. Lars Jonsson (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6226770 - Method of providing an optical data carrier with identity information (2001-05-01),

2. 6023332 - Device and method for measuring birefringence in an optical data carrier (2000-02-08),

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USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#1 in De Cocksdorp

#2,202 in Netherlands

De Cocksdorp, Netherlands

Ifunga Test Equipment B.v.

Forward Citations = 5

4 inventors:

Jan Barchan (1 out of 1 patent)

Ulf Wilhelmson (1 out of 1 patent)

Hakan Bergstrom (1 out of 1 patent)

4. Lars Jonsson (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ifunga Test Equipment B.v.. Retrieved from https://idiyas.com/company/ifunga-test-equipment-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]