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:
Feb. 01, 2005
Filed:
Oct. 07, 2002
Applicants:
Charles-marie Anciaux, Tavaux, FR;
Vincent Wilmet, Wavre, BE;
Dominique Lecroc, Dole, FR;
Inventors:
Assignee:
Solvay (Societe Anonyme), , BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 1700 ; C07C 1708 ; C07C 1908 ; C07C 1738 ;
U.S. Cl.
CPC ...
Abstract
1,1-Difluoroethane containing less than 10 mg/kg of vinyl chloride is obtained by treatment, with hydrogen fluoride, of a crude 1,1-difluoroethane containing less than 1 mol of hydrogen chloride per mole of 1,1-difluoroethane.