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:
Jul. 13, 1999
Filed:
Jan. 30, 1998
Applicant:
Inventors:
Rene Bertocchio, Vourles Par Vernaison, FR;
Eric Deslandes, Villeurbanne, FR;
Eric Lacroix, Amberieux D'Azergues, FR;
Assignee:
ELF Atochem S.A., , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ;
U.S. Cl.
CPC ...
203 57 ; 203 68 ; 203 70 ; 570178 ;
Abstract
A process for the purification of 1-chloro-1,2,2,2-tetrafluoroethane (F124) containing 1,2-dichlorotetrafluoroethane (F114) and/or 1,1-dichlorotetrafluoroethane (F114a). The F124 to be purified is subjected to extractive distillation, the extractant being chosen from C.sub.5 -C.sub.8 aliphatic or cycloaliphatic hydrocarbons and C.sub.4 -C.sub.8 perfluoroalkyl halides.
Quick Actions:
Bertocchio, Rene. (1999). Purification of chlorotetraflouroethane by extractive distillation (U.S. Patent No. 5922175). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5922175
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile