% Expired Patents = 25.0

Forward Citations = 63

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5 inventors (with patents filed for the assignee):

Felix Ejeckam (4 out of 17 patents)

Daniel Francis (4 out of 32 patents)

Dubravko Ivan Babic (4 out of 19 patents)

4. John Wasserbauer (4 out of 5 patents)

5. Firooz Faili (1 out of 3 patents)

4 patents: Sort by Forward Citations

1. 8283672 - Semiconductor devices having gallium nitride epilayers on diamond substrates (2012-10-09),

2. 8283189 - Method for manufacturing semiconductor devices having gallium nitride epilayers on diamond substrates (2012-10-09),

3. 7943485 - Composite wafers having bulk-quality semiconductor layers and method of manufacturing thereof (2011-05-17),

4. 7595507 - Semiconductor devices having gallium nitride epilayers on diamond substrates (2009-09-29),

Company Overview

Group4 Labs, Inc. is a leading provider of advanced analytical instruments and services for materials analysis and characterization. With cutting-edge technology and a team of expert scientists, we help our clients in research and development, quality control, and forensic analysis. Our innovative solutions enable faster and more accurate measurements in industries such as pharmaceuticals, semiconductors, and environmental monitoring.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#241 in Menlo Park, CA

#14,058 in California

#60,671 in US

Menlo Park, CA, United States of America

Group4 Labs, Inc.

Forward Citations = 63

5 inventors:

Felix Ejeckam (4 out of 17 patents)

Daniel Francis (4 out of 32 patents)

Dubravko Ivan Babic (4 out of 19 patents)

4. John Wasserbauer (4 out of 5 patents)

5. Firooz Faili (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Group4 Labs, Inc.. Retrieved from https://idiyas.com/company/group4-labs

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]