% Expired Patents = 33.3

Forward Citations = 89

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4 inventors (with patents filed for the assignee):

David Pelka (2 out of 50 patents)

Benjamin A Jacobson (1 out of 48 patents)

Robert D Gengelbach (1 out of 8 patents)

4. William Arthur Parkyn, Jr (1 out of 33 patents)

3 patents: Sort by Forward Citations

1. 10877253 - Optical system (2020-12-29),

2. 10274783 - Direct-view LED backlight with gradient reflective layer (2019-04-30),

3. 7273299 - Cylindrical irradiance-mapping lens and its applications to LED shelf-lighting (2007-09-25),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#584 in Los Angeles, CA

#16,867 in California

#73,904 in US

Los Angeles, CA, United States of America

Pelka & Associates Inc.

Forward Citations = 89

4 inventors:

David Pelka (2 out of 50 patents)

Benjamin A Jacobson (1 out of 48 patents)

Robert D Gengelbach (1 out of 8 patents)

4. William Arthur Parkyn, Jr (1 out of 33 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pelka & Associates Inc.. Retrieved from https://idiyas.com/company/pelka-and-associates

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]