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:
Sep. 15, 1987
Filed:
Jan. 23, 1986
Applicant:
Inventors:
Assignee:
Queen's University at Kingston, Kingston, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C12P / ; C12R / ;
U.S. Cl.
CPC ...
435180 ; 435 43 ; 435 47 ; 435 49 ; 435177 ; 435815 ; 435816 ; 435886 ;
Abstract
Enzymes extracted from a prokaryotic .beta.-lactam producing microorganism are immobilized on a support for producing desacetoxycephalosporin and analogs thereof from L-.alpha.-aminoadipyl-L-cysteinyl-D-valine and analogs thereof. The enzymes are an epimerase, a cyclase and a ring expansion enzyme extracted preferably from S. clavuligerus, S. cattleya or S. lipmanii. The support is preferably a diethylaminoethyl ion exchange resin.