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:
Jan. 23, 1990
Filed:
Jul. 10, 1987
Applicant:
Inventor:
Richard L Witter, Okemos, MI (US);
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; C12N / ; C12N / ; C12R / ;
U.S. Cl.
CPC ...
424 89 ; 424 93 ; 4351721 ; 435237 ; 435948 ; 935 63 ; 935 65 ; 935 70 ;
Abstract
A serotype 2 Marek's disease vaccine comprising a cloned strain designated as 301B/1 has been derived from a field isolate. This strain is characterized by superior levels of replicative ability and protectivity in chickens as compared to existing commercial serotype 2 strains, and it is virtually nonpathogenic. 301B/1 is particularly useful in the formulation of highly efficacious bivalent and polyvalent vaccines.