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. 06, 1994
Filed:
Sep. 01, 1993
Applicant:
Inventors:
Yoshikazu Yuki, Kobe, JP;
Motoko Baba, Kobe, JP;
Mitsuo Shimizu, Kobe, JP;
Kazuo Kato, Kobe, JP;
Hajime Hiratani, Sennan, JP;
Assignee:
JCR Pharmaceuticals Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61L / ; A61K / ; A61K / ; C12N / ;
U.S. Cl.
CPC ...
5303901 ; 5303871 ; 530382 ; 5303905 ; 5303881 ; 530861 ;
Abstract
Secretory immunoglobulin A preparations substantially not containing virus are produced by a process wherein secretory immunoglobulin A which might be contaminated with viruses is (1) heated about 60.degree. C. for about 10 hours, or (2) subjected to the reaction with tri-n-butyl phosphate and a surfactant and the heating as mentioned above, as liquidized form in an aqueous medium, and then polymerized matters are precipitated from the resulting solution by adding polyethyleneglycol thereto.