% Expired Patents = 25.0

CIPO Patents = 1

Forward Citations = 67

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7 inventors (with patents filed for the assignee):

Darwin Edward Kiel (3 out of 17 patents)

Ian David Williamson (3 out of 3 patents)

Sergei Sharonov (1 out of 7 patents)

4. Grazyna Petela (1 out of 18 patents)

5. Pierre-Jean Daniel (1 out of 1 patent)

6. Wiktor Jungowski (1 out of 1 patent)

7. Jason L Szabo (1 out of 1 patent)

8. John Geerligs (3 patents)

9. Gyula Eisenbart (2 patents)

10. Theodor Bardas (3 patents)

4 patents: Sort by Forward Citations

1. 6429926 - Optical flow meter capable of operating with a variable refractive index (2002-08-06),

2. 6343672 - Blowdown and venting jet noise suppressor (2002-02-05),

3. 6275284 - Pipeline optical flow meter (2001-08-14),

4. 6128072 - Optical flow meter integrally mounted to a rigid plate with direct (2000-10-03),

Company Overview

Nova Gas Transmission Ltd. is a leading natural gas transmission company operating within Alberta, Canada. As a subsidiary of TC Energy, Nova Gas Transmission Ltd. plays a crucial role in transporting natural gas across Alberta and connecting it to markets in Canada and the United States. The company is committed to safe and reliable operation of its pipelines, ensuring the efficient delivery of natural gas to customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#247 in Calgary

#3,464 in Canada

Calgary, Canada

Nova Gas Transmission Ltd.

Forward Citations = 67

7 inventors:

Darwin Edward Kiel (3 out of 17 patents)

Ian David Williamson (3 out of 3 patents)

Sergei Sharonov (1 out of 7 patents)

4. Grazyna Petela (1 out of 18 patents)

5. Pierre-Jean Daniel (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nova Gas Transmission Ltd.. Retrieved from https://idiyas.com/company/nova-gas-transmission

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]

1 patent (CIPO):

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]