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:
Nov. 11, 1997
Filed:
Jun. 06, 1995
Applicant:
Inventors:
Fudu Miao, Louisville, CO (US);
Timothy J Eggeman, Lakewood, CO (US);
Assignee:
Chronopol, Inc., Golden, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
549274 ; 549379 ; 549263 ;
Abstract
A process is provided for the production and purification of cyclic esters in which the purification includes the introduction of an aqueous solvent into a cyclic ester containing composition and allowing two phases to form. A first phase includes cyclic esters and any organic solvent, and a second phase includes the aqueous solvent and impurities.