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:
Jan. 30, 1979
Filed:
Feb. 21, 1978
Applicant:
Inventors:
Ming K Li, Schenectady, NY (US);
Michael R MacLaury, Rexford, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568725 ;
Abstract
Impure 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene can be purified by heating the latter either with phenol alone or with a mixture of methylene chloride and phenol, allowing the heated mixture to cool until crystallization occurs and removing the above-identified purified dichloroethylene compound.