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Silver Spring, MD, United States of America

Celight, Inc.

USPTO Granted Patents = 44

% Expired Patents = 93.2

Forward Citations = 473

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31 inventors (with patents filed for the assignee):

Isaac Shpantzer (36 out of 38 patents)

Pak Shing Cho (23 out of 28 patents)

Jacob B Khurgin (19 out of 45 patents)

4. Arkady Kaplan (13 out of 15 patents)

5. Yaakov Achiam (13 out of 14 patents)

6. Nadejda Reingand (11 out of 14 patents)

7. Aviv Salamon (11 out of 13 patents)

8. Michael Tseytlin (6 out of 8 patents)

9. Arthur Greenblatt (5 out of 5 patents)

10. Israel Smilanski (5 out of 6 patents)

11. Geoffrey Harston (4 out of 4 patents)

12. Yehouda Meiman (4 out of 4 patents)

13. Vladimir S Grigoryan (3 out of 16 patents)

14. Jacques Goldberg (3 out of 5 patents)

15. Alper Demir (3 out of 6 patents)

Core Competencies:

Dual-Polarization

Optical Communications

Coherent Detection

Chemical Sensing

Frequency Multiplexing

Optical Receiver

High Z Material Detection

Pulse Generation

Integrated Transmitter

Sagnac Sensor

Laser Vibrometry

Optical Sensor

44 patents: Sort by Forward Citations

1. 9235100 - Apparatus for dual-polarization QAM and optical communications system using the same cross-reference to related application (2016-01-12),

2. 8634723 - Optical communications with polarization dependent loss compensation (2014-01-21),

3. 8532498 - Secure orthogonal frequency multiplexed optical communications (2013-09-10),

4. 8300229 - Chemical sensing with coherent detection of optical signal (2012-10-30),

5. 8285153 - Single chip two-polarization quadrature synthesizer, analyser and optical communications system using the same (2012-10-09),

6. 8200049 - Optical sensor for detecting and localizing events (2012-06-12),

7. 8143575 - Detection of high Z materials using reference database (2012-03-27),

8. 8064767 - Optical orthogonal frequency division multiplexed communications with coherent detection (2011-11-22),

9. 8050351 - Quadrature modulator with feedback control and optical communications system using the same (2011-11-01),

10. 8041224 - Optical frequency division multiplexed communications over the horizon (2011-10-18),

11. 8009295 - Chemical sensing with noise pre-compensation (2011-08-30),

12. 8009294 - Chemical sensing system and method (2011-08-30),

13. 7995925 - Optical receiver using beam combining and system using the same (2011-08-09),

14. 7974543 - Optical receiver and a free-space optical communications using the same (2011-07-05),

15. 7961997 - Space diversity optical receiver and system and method using the same (2011-06-14),

Company Overview

Celight, Inc., based in Silver Spring, MD, specializes in advanced optical communication technologies and chemical sensing solutions. The company focuses on coherent detection and quadrature modulation techniques, enabling high-performance optical sensors and frequency division multiplexing applications. Celight's innovations are pivotal in high Z material detection and pulse generation, contributing to various sectors that require precise and reliable optical measurement and communication systems.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

44 Patents

#3 in Silver Spring, MD

#92 in Maryland

#7,956 in US

#15,756 in the World

Silver Spring, MD, United States of America

Celight, Inc.

Forward Citations = 473

31 inventors:

Isaac Shpantzer (36 out of 38 patents)

Pak Shing Cho (23 out of 28 patents)

Jacob B Khurgin (19 out of 45 patents)

4. Arkady Kaplan (13 out of 15 patents)

5. Yaakov Achiam (13 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Celight, Inc.. Retrieved from https://idiyas.com/company/celight

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]

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