% Expired Patents = 33.3

Forward Citations = 38

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3 inventors (with patents filed for the assignee):

Dennis G Deppe (6 out of 20 patents)

Guowei Zhao (1 out of 1 patent)

Sabine M Freisem (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 10886701 - Low resistance vertical cavity light source with PNPN blocking (2021-01-05),

2. 10879671 - Vertical-cavity surface-emitting device with epitaxial index guide (2020-12-29),

3. 10673206 - Semiconductor devices with depleted heterojunction current blocking regions (2020-06-02),

4. 10033156 - Low resistance vertical cavity light source with PNPN blocking (2018-07-24),

5. 9705283 - Diffused channel semiconductor light sources (2017-07-11),

6. 8774246 - Semiconductor light sources including selective diffusion for optical and electrical confinement (2014-07-08),

Company Overview

Sdphotonics LLC specializes in developing cutting-edge photonic solutions for a wide range of industries. Our team of experts leverage advanced technologies to create custom solutions that meet the unique needs of our clients. With a focus on innovation and quality, we strive to provide top-notch products and services to help businesses succeed in today's competitive market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#68 in Richardson, TX

#2,905 in Texas

#44,981 in US

Richardson, TX, United States of America

Sdphotonics LLC

Forward Citations = 38

3 inventors:

Dennis G Deppe (6 out of 20 patents)

Guowei Zhao (1 out of 1 patent)

Sabine M Freisem (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sdphotonics LLC. Retrieved from https://idiyas.com/company/sdphotonics

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]