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:
Apr. 20, 1999
Filed:
Dec. 01, 1997
Applicant:
Inventors:
Maher Y Elsheikh, Wayne, PA (US);
Michael S Bolmer, Collegeville, PA (US);
Bin Chen, Exton, PA (US);
Assignee:
Elf Atochem North America, Inc., Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
570167 ; 570169 ; 570164 ;
Abstract
A process for the preparation of 245fa is provided, wherein 1233zd is first fluorinated to 1234ze, followed by fluorination of 1234ze to 245fa. 245fa is a known foam blowing agent and refrigerant.
Elsheikh, Maher. (1999). Preparation of 1,1,1,3,3-pentafluoropropane (U.S. Patent No. 5895825). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5895825
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile