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. 02, 1976
Filed:
Aug. 09, 1974
Applicant:
Inventors:
M James Barrett, Saratoga, CA (US);
Joseph I De Graw, Sunnyvale, CA (US);
Assignee:
SmithKline Instruments, Inc., Palo Alto, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ; A61N / ;
U.S. Cl.
CPC ...
424-1 ; 2601 / ; 2323 / ; 206 84 ;
Abstract
Novel folic acid derivatives useful for radio-assaying folic acid and its metabolites in biological liquids are prepared from pteroyl-.gamma.-glutamyl-tyrosines by iodination with I.sup.125 or I.sup.131.