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:
Mar. 25, 1997
Filed:
Nov. 30, 1994
Applicant:
Inventors:
William P Cacheris, Florissant, MO (US);
Thomas J Richard, Des Peres, MO (US);
Raymond C Grabiak, Maryland Heights, MO (US);
Albert C Lee, Chesterfield, MO (US);
Assignee:
HemaGen/PFC, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
424-9365 ; 514492 ; 514502 ; 514836 ;
Abstract
Emulsions of paramagnetic contrast agents, and processes of making and using them are disclosed. The emulsions contain water, a dispersed oil phase and a complex of a paramagnetic metal ion and an organic acid chelator, for example DTPA (diethylenetriaminepentaacetic acid), having a C.sub.10 -C.sub.30 saturated aliphatic group and an hydroxyl group bonded to the nitrogen atom. The emulsions are very stable and therapeutically acceptable for intravenous administration to enhance MRI imaging.