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:
May. 16, 1989
Filed:
Feb. 09, 1984
Applicant:
Inventors:
David H Gelfand, Oakland, CA (US);
Lawrence I Greenfield, Albany, CA (US);
Frances C Lawyer, Oakland, CA (US);
Assignee:
Cetus Corporation, Emeryville, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C12N / ;
U.S. Cl.
CPC ...
435 68 ; 4351723 ; 435320 ; 43525233 ; 43525231 ; 43525234 ; 536 27 ;
Abstract
Recombinant vectors which are effective in expressing DNA sequences encoding specific fragments of diphtheria toxins at high levels in recombinant host cells are disclosed. Both a fragment consisting of the enzymatically active A chain of diphtheria toxin and a fragment consisting of both the A portion and a B portion partial sequence are constructed by use of this recombinant vector.