Forward Citations = 136

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2 inventors (with patents filed for the assignee):

Richard Alan Callahan (6 out of 14 patents)

Kishore V Khandavalli (2 out of 2 patents)

6 patents: Sort by Forward Citations

1. 6953492 - Membrane technology to reduce nitrogen in natural gas (2005-10-11),

2. 6128916 - Membrane technology to remove non-condensable gases from refrigeration (2000-10-10),

3. 5873928 - Multiple stage semi-permeable membrane process and apparatus for gas (1999-02-23),

4. 5693121 - Semi-permeable membrane separation process for the production of very (1997-12-02),

5. 5482539 - Multiple stage semi-permeable membrane process and apparatus for gas (1996-01-09),

6. 5233837 - Process and apparatus for producing liquid carbon dioxide (1993-08-10),

Company Overview

Enerfex, Inc. is a leading provider of renewable energy solutions, specializing in solar and wind power systems. Established in 2005, we have successfully implemented numerous projects for residential, commercial, and industrial clients. With a commitment to sustainability and innovation, Enerfex strives to create a cleaner and greener future for all.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

6 Patents

#2 in Williston, VT

#73 in Vermont

#44,949 in US

Williston, VT, United States of America

Enerfex, Inc.

Forward Citations = 136

2 inventors:

Richard Alan Callahan (6 out of 14 patents)

Kishore V Khandavalli (2 out of 2 patents)

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

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]