% Expired Patents = 50.0

EPO Patents = 2

Forward Citations = 1

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2 inventors (with patents filed for the assignee):

Carl Keith Smith (2 out of 14 patents)

Stefan Alexandru Stoian (2 out of 6 patents)

2 patents: Sort by Forward Citations

1. 8387723 - Drilling fluid and method for drilling in coal-containing formations (2013-03-05),

2. 8338340 - Drilling fluid and methods (2012-12-25),

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USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#405 in Calgary

#6,024 in Canada

Calgary, Canada

Tech-Star Fluid Systems Inc.

Forward Citations = 1

2 inventors:

Carl Keith Smith (2 out of 14 patents)

Stefan Alexandru Stoian (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tech-Star Fluid Systems Inc.. Retrieved from https://idiyas.com/company/tech-star-fluid-systems

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]

2 patents (EPO):

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]