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:
Nov. 10, 1992
Filed:
Apr. 09, 1990
Applicant:
Inventors:
John S Oxford, London, GB;
James S Robertson, St. Albans, GB;
Geoffrey C Schild, London, GB;
David A Tyrrell, Salisbury, GB;
Assignee:
National Research Development Corporation, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C12N / ; C12N / ; C12N / ; C12N / ; C12N / ; C12Q / ; C12Q / ;
U.S. Cl.
CPC ...
424 89 ; 4352351 ; 435236 ; 435237 ; 435238 ; 435239 ; 435-5 ; 435-6 ; 435-72 ; 435-721 ;
Abstract
A strain of influenza virus, especially human influenza type A or B, for use in formulating a vaccine is selected by a process which comprises isolating candidate influenza viruses in embryonated hens' eggs, determining whether they have antigenic similarities to strains which are the same except that they have been isolated and grown exclusively in animal cells, that is to say whether they are 'cell-like', and selecting at least one such cell-like strain or a reassortant thereof having its HA and NA genes for the vaccine.