Wilmington, DE, United States of America

Columbia Gas Service Corporation

Calculating rank

USPTO Granted Patents = 2

Forward Citations = 14

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5 inventors (with patents filed for the assignee):

Stephen E Petty (1 out of 9 patents)

F Bert Cook (1 out of 13 patents)

Arthur C Eberle (1 out of 1 patent)

4. William D Munk (1 out of 1 patent)

5. Robert G Venendaal (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 4972679 - Absorption refrigeration and heat pump system with defrost (1990-11-27),

2. 3974694 - Remote digital indicator attachment for a gas meter (1976-08-17),

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USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#908 in Wilmington, DE

#1,328 in Delaware

#94,905 in US

Wilmington, DE, United States of America

Columbia Gas Service Corporation

Forward Citations = 14

5 inventors:

Stephen E Petty (1 out of 9 patents)

F Bert Cook (1 out of 13 patents)

Arthur C Eberle (1 out of 1 patent)

4. William D Munk (1 out of 1 patent)

5. Robert G Venendaal (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Columbia Gas Service Corporation. Retrieved from https://idiyas.com/company/columbia-gas-service

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]