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Trademarks = 1

Forward Citations = 123

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12 inventors (with patents filed for the assignee):

Charles M Blackburn (4 out of 4 patents)

Philip L Reid (3 out of 29 patents)

Daniel L Reuter (3 out of 3 patents)

4. Clifton W Heffner (3 out of 3 patents)

5. Robert T Stewart (2 out of 2 patents)

6. Sandy Hoover, Legal Representative (1 out of 1 patent)

7. Ravi C Krishnan (1 out of 2 patents)

8. Wendel C Green (1 out of 1 patent)

9. Russell E Cunningham (1 out of 1 patent)

10. Gordon S Light (1 out of 1 patent)

11. Patrick J Sharkitt (1 out of 1 patent)

12. Charles W Webster (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 7483769 - Method and apparatus for latent temperature control for a device under test (2009-01-27),

2. 6993418 - Method and apparatus for latent temperature control for a device under test (2006-01-31),

3. 6449534 - Method and apparatus for optimizing environmental temperature for a device under test (2002-09-10),

4. 4265074 - Web processing mechanism for forming packages (1981-05-05),

5. 4262474 - Web feeding system for package forming machine (1981-04-21),

6. 4262470 - Packaging system with cantilevered web feed system accessible for (1981-04-21),

7. 4180153 - High speed batch counting apparatus (1979-12-25),

8. 4153931 - Automatic library control apparatus (1979-05-08),

Sigma Systems Corporation is a leading provider of catalog-driven software solutions for communications, media, and high-tech companies. Their platform helps companies to rapidly launch innovative services, increase revenue, and improve customer experiences. Sigma Systems has over 30 years of experience and serves customers worldwide.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

8 Patents

#9 in El Cajon, CA

#8,296 in California

#34,918 in US

El Cajon, CA, United States of America

Sigma Systems Corporation