logo

For the Inventor, By the Inventor

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.:

US 12662644 B1

PDFFull Text
Date of Patent:
Jun. 23, 2026

Filed:

Aug. 23, 2022

Refrigeration cycle device using refrigerants containing hydrocarbon and sulfur-based odorant

Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Kengo Hiratsuka, Tokyo, JP;

Satoru Toyama, Tokyo, JP;

Kenji Kojima, Tokyo, JP;

Manami Nakamura, Tokyo, JP;

Assignee:

MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;

Attorney:

XSENSUS LLP

Primary Examiner:

Jerry-Daryl Fletcher

Assistant Examiner:

Daniel C Comings

Int. Cl.
CPC ...
C09K 5/04 (2006.01); C10M 107/34 (2006.01); F25B 31/00 (2006.01); C10N 40/30 (2006.01);
U.S. Cl.
CPC ...
C10M 107/34 (2013.01); C09K 5/042 (2013.01); F25B 31/002 (2013.01); C09K 2205/12 (2013.01); C09K 2205/134 (2013.01); C10M 2209/1075 (2013.01); C10N 2040/30 (2013.01); F25B 2500/222 (2013.01);
Abstract

A refrigeration cycle device can include a refrigerant circuit that includes a compressor. A refrigerant can be enclosed in the refrigerant circuit, particularly where the refrigerant can contain a hydrocarbon having 1 to 4 carbon atoms and a sulfur-based odorant. The compressor can be filled with a refrigeration oil, where the refrigeration oil can contain a base oil, and where the ratio of the number of oxygen atoms to the number of carbon atoms in the molecular structure of the base oil is less than 0.50.

Find Patent Forward Citations

Hiratsuka, Kengo. (2026). Refrigeration cycle device using refrigerants containing hydrocarbon and sulfur-based odorant (U.S. Patent No. 12662644). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12662644

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…