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. 28, 1993
Filed:
Jan. 21, 1992
Applicant:
Inventor:
Koichi Okutani, Takamatsu, JP;
Assignee:
Teikoku Seiyaku Kabushiki Kaisha, Kagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H / ; C07H / ; C07H / ; C12P / ;
U.S. Cl.
CPC ...
435104 ; 435874 ; 435 41 ; 536 53 ; 536 54 ; 536118 ; 536122 ; 536123 ; 536124 ;
Abstract
An acid heteropolysaccharide P-318 which comprises galactose, galacturonic acid, N-acetylfucosamine and pyruvic acid in a ratio of about 2:3:1:1, a sulfated heteropolysaccharide P-318 having a 10% or less sulfur content which is prepared by sulfating said acid heteropolysaccharide and a process for preparing an acid heteropolysaccharide P-318 which comprises culturing Pseudomonas sp. 318 to produce the acid heteropolysaccharide P-318 and collecting the thus produced acid heteropolysaccharide P-318. The sulfated polysaccharide P-318 of the invention shows a strong antiviral activity in spite of a lower content of sulfate.