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:
Jun. 26, 1984
Filed:
Jul. 21, 1982
Applicant:
Inventor:
Takeshi Shimizu, Sapporo-shi, Hokkaido, JP;
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C12N / ; C12N / ;
U.S. Cl.
CPC ...
424 92 ; 4351721 ; 435253 ;
Abstract
A method for the preparation of a new mutant strain of Bordetella bronchiseptica having a plural of hereditary chromosomal markers of at least temperature-sensitivity and urease negative, more particularly a phase I mutant strain of B. bronchiseptica having excellent immunity and high safety, which is useful for the preparation of a live attenuated vaccine for prophylaxis of B. bronchiseptica infection, and also a live attenuated vaccine prepared therefrom, and use thereof.