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. 23, 2025
Filed:
Jul. 17, 2023
Honeywell International Inc., Charlotte, NC (US);
Wissam Rached, Charlotte, NC (US);
Pawel Wisnik, Charlotte, NC (US);
Kaimi Gao, Charlotte, NC (US);
Nilesh Purohit, Charlotte, NC (US);
Ankit Sethi, Charlotte, NC (US);
Jean De Bernardi, Charlotte, NC (US);
HONEYWELL INTERNATIONAL INC., Charlotte, NC (US);
Abstract
Methods for improving a refrigeration systems comprising modifying the system and replacing existing refrigerant with a replacement refrigerant comprising: (1) at least about 50% by weight of R1234ze(E); (2) greater than 0% to about 11% of HFC-134a, HFC-134, HFC-227ea, HFC-125, and combinations of two or more of these; and (3) from about 4% to about 20% by weight of HFO-1336mzz(E), HFO-1224yd(Z), and combinations of these, wherein said second refrigerant: (i) has an Occupational Exposure Limit (OEL) greater than 400; (ii) is classified as class A1 by ASHRAE Standard 34; and (iii) has a GWP of about 150 or less.