The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2026
Filed:
Oct. 28, 2022
Edwards Vacuum Llc, Sanborn, NY (US);
Peter F. Moran, Chelmsford, MA (US);
Steven Edward Zacharski, Chelmsford, MA (US);
Edwards Vacuum LLC, Sanborn, NY (US);
Abstract
A sensor for detecting contamination of a cryogenic refrigerant in a cryogenic refrigeration system, a method and a refrigeration system are disclosed. The sensor comprises: an inlet for coupling to a cryogenic refrigerant flow path in the cryogenic refrigeration system and a thermal conductivity detector in fluid communication with the inlet. The thermal conductivity detector is configured to generate a signal indicative of a detected thermal conductivity of the cryogenic refrigerant received from the cryogenic refrigeration system when the sensor is coupled thereto. The sensor also comprises circuitry configured to convert the thermal conductivity signal to an indication of contamination of the cryogenic refrigerant; and an output configured to output the indication of contamination of the cryogenic refrigerant.