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. 13, 1977
Filed:
May. 25, 1976
Guy Tilly, Aulnay-sous-Bois, FR;
Michel Jean-Charles Hardouin, Aulnay-sous-Bois, FR;
Jean Lautrou, Aulnay-sous-Bois, FR;
Laboratoires Andre Guerbet, Aulnay-sous-Bois, FR;
Abstract
This invention relates to compounds having the following general formula: ##STR1## in which n is an integer from 0 to 4; R.sub.1 and R.sub.2 represent independently from each other a radical of the formula --CONHR.sub.5 in which R.sub.5 is an alkyl radical having 1-4 carbon atoms or a hydroxyalkyl radical having 1-4 carbon atoms or a radical of the formula ##STR2## in which R.sub.6 and R.sub.7 are alkyl radicals having 1-4 carbon atoms; and R.sub.3 and R.sub.4, independently from each other, represent a hydrogen atom or an alkyl radical having 1-4 carbon atoms. Said compounds are useful as X-ray contrast media, particularly for myelography.