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:
May. 15, 2001
Filed:
Oct. 01, 1999
Byung Gwon Lee, Seoul, KR;
Jong Sung Lim, Kyungki-Do, KR;
Young Soo Kwon, Seoul, KR;
Honggon Kim, Seoul, KR;
Dong Joo Mun, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A refrigerant composition useful as a substitute for chlorodifluoromethane (CHClF,, HCFC-22). The refrigerant composition has a first constituent of difluoromethane (CH,F,, HFC-32); a second constituent of 1,1,1-trifluoroethane (CH,CF,; namely, HFC-143a); and a third constituent selected from cyclopropane (C,H,, RC-270), 1,1,1,2,3,3,3-heptafluoropropane (CF,CHFCF,, HFC-227ea), 1,1,1,2,2-pentafluoropropane (CH,CF,CF,, HFC-245cb), 1,1,1,2,3,3-hexafluoropropane (CHF,CHFCF,, HFC-236ea), butane (C,H,, R-600), bis(difluoromethyl)ether (CHF,OCHF,, HFE-134) and pentafluoroethylmethylether (CF,CF,OCH,, HFE-245).