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. 31, 1990
Filed:
Nov. 28, 1989
Applicant:
Inventors:
John B Hill, Woodstock, IL (US);
Hugh L Dryden, Jr, Deerfield, IL (US);
Robert Erickson, Des Plaines, IL (US);
Assignee:
The Nutra Sweet Company, Deerfield, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549253 ; 562898 ;
Abstract
N-formyl-L-aspartic anhydride is prepared using a minimum excess of formic acid. Acetic anhydride and a C.sub.3 -C.sub.6 secondary alcohol are added to the reaction mixture to consume excess formic acid. The reaction is suitable for further reactions without modification.