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:
Jun. 16, 2026
Filed:
Mar. 03, 2023
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Yuka Watanabe, Osaka, JP;
Tomoyuki Gotou, Osaka, JP;
Yuuko Itou, Osaka, JP;
Takashi Usui, Osaka, JP;
Takashi Yoshimura, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 (2006.01);
U.S. Cl.
CPC ...
C09K 5/045 (2013.01); C09K 2205/126 (2013.01); C09K 2205/22 (2013.01);
Abstract
A pressure increase in a compressor is suppressed. Disclosed is a method that uses a composition as a refrigerant in a refrigerant circuit, in which the composition includes one or more compounds selected from the group consisting of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and in the refrigerant circuit, the total internal volume of a refrigerant pipe and a component that are connected to a compressor is greater than or equal to 0.7 times the internal volume of the compressor.