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:
Feb. 25, 1992
Filed:
Aug. 13, 1990
Applicant:
Inventors:
Rudiger Marquardt, Frankfurt am Main, DE;
Johann Then, Hofheim am Taunus, DE;
Hans-Matthias Deger, Hofheim am Taunus, DE;
Gerhard Wohner, Florsheim am Main, DE;
Martyn K Robinson, Maidenhead, GB;
Andrew Doherty, late of Bourne End, GB;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C12N / ;
U.S. Cl.
CPC ...
43525233 ; 435 691 ; 435 712 ; 435 91 ; 435108 ; 4351721 ; 4351723 ; 4353201 ; 435849 ; 536 27 ; 935-6 ; 935-9 ; 935 14 ; 935 22 ; 935 29 ; 935 59 ; 935 60 ; 935 61 ; 935 66 ; 935 73 ;
Abstract
The isolation of the tyrB gene contained in E. coli ATCC 11303 and its cloning onto a multicopy plasmid results in a 10-fold increase in the L-phenylalanine yield after the transformation of the starting strain with this plasmid.