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:
Dec. 01, 1987
Filed:
Jun. 04, 1985
Applicant:
Inventors:
Sandra Kea, Lincoln, NE (US);
Charles E Walker, Lincoln, NE (US);
Assignee:
Nebraska Department of Economic Development, State of Nebraska, Lincoln, NE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07H / ;
U.S. Cl.
CPC ...
536119 ; 536115 ; 536127 ;
Abstract
Sugar esters are separated and purified by forming an aqueous mixture containing salt from which water is distilled off to remove unreacted volatile material from the raw sugar esters. Thereafter an organic extraction solvent is mixed into the aqueous mixture which upon standing separates into a plurality of layers containing sugar esters of different degrees of substitution which are recovered from the separated layers. The separated sugar esters may be further refined by mixing with water and by freeze drying the aqueous mixture.