Forward Citations = 155

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5 inventors (with patents filed for the assignee):

Johannes J Verboom (1 out of 33 patents)

P Guy Howard (1 out of 1 patent)

Roeland M Hekker (1 out of 1 patent)

4. Roger R Bracht (1 out of 6 patents)

5. Keith R Fritze (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4606016 - Write protection and data detection using differential detector (1986-08-12),

2. 4584686 - Reed-Solomon error correction apparatus (1986-04-22),

3. 4541689 - Friction wedge alignment system for laser diode collimator pens (1985-09-17),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#438 in Minneapolis, MN

#1,979 in Minnesota

#73,860 in US

Minneapolis, MN, United States of America

Optical Storage International

Forward Citations = 155

5 inventors:

Johannes J Verboom (1 out of 33 patents)

P Guy Howard (1 out of 1 patent)

Roeland M Hekker (1 out of 1 patent)

4. Roger R Bracht (1 out of 6 patents)

5. Keith R Fritze (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Optical Storage International. Retrieved from https://idiyas.com/company/optical-storage-international

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]