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. 22, 1987
Filed:
Jul. 31, 1986
Applicant:
Inventors:
Assignee:
SmithKline-RIT, , BE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; A61K / ;
U.S. Cl.
CPC ...
435235 ; 435238 ; 424 89 ;
Abstract
Disclosed is a temperature - sensitive (ts) mutant of bovine viral diarrhoea (BVD) virus which shows a considerably limited replication ability at the animal body temperature. The mutant is prepared by reacting wild-type BVD with a chemical mutagen such as nitrous acid. The mutant virous is advantageously used in vaccine compositions because it is capable of inducing immunity in bovines without causing serious side effects.