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:
Feb. 11, 1992
Filed:
Jul. 31, 1989
Applicant:
Inventor:
Steven C Quay, Palo Alto, CA (US);
Assignee:
Salutar, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; C07F / ; C07F / ;
U.S. Cl.
CPC ...
424-9 ; 436173 ; 436806 ; 556 45 ; 556 57 ; 556110 ; 556138 ; 556148 ;
Abstract
Complexes of a highly paramagnetic polyvalent metal, e.g., a lanthanide such as gadolinium, or of a less paramagnetic metal, e.g., iron, manganese, copper, cobalt, chromium or nickel, with a bisalkylamide of diethylenetriaminepentaacetic acid of the formula: ##STR1## wherein three groups M are hydroxyl groups and the remaining two groups M are NHR groups in which each group R is an alkyl group of the formula --(CH.sub.2).sub.n CH.sub.3 where n is zero or an integer of from 1 to 17, are disclosed. These complexes are useful as magnetic resonance imaging contrast enhancers.