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. 31, 1991
Filed:
Sep. 07, 1989
Applicant:
Inventors:
Paul S Wu, San Francisco, CA (US);
Susan B Wade, Fremont, CA (US);
Raul R Soikes, Sunnyvale, CA (US);
Assignee:
Genelabs, Incorporated, Redwood City, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07K / ; C07K / ; C07K / ; C07K / ;
U.S. Cl.
CPC ...
530370 ; 530416 ; 530417 ; 530412 ;
Abstract
A substantially pure, hemagglutinin-free composition of trichosanthin, and a method of producing the composition is disclosed. A plant extract from Trichosanthes kirilowii is contacted with an anionic exchange resin to remove contaminating hemagglutinins, and trichosanthin is further purified from the extract by cation exchange chromatography to a purity of greater than 95%.