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:
Jun. 01, 1976
Filed:
Aug. 06, 1974
Jean-Claude Henri Hardouin, Chantilly, FR;
Maurice Rene Vallette, Precy-sur-Oise, FR;
Produits Chimiques Ugine Kuhlmann, Paris, FR;
Abstract
Process for the preparation of an anhydrous base or salt of a dyestuff of the Auramine series, which comprises isolating the base or salt in acetone, methylethylketone or diethylketone; products prepared by such a process; the hydrofluoride of the base of Auramine O; the phosphate of the base of Auramine O; the hydrobromide of the base of ethylauramine; the phosphate of the base of ethylauramine; the hydrofluoride and phosphate of the base of Auramine G and paper, inks, textile fibers, leather or plastics materials colored by the hydrofluoride of the base of Auramine O; the phosphate of the base of Auramine O; the hydrobromide of the base of ethylauramine; the phosphate of the base of ethylauramine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile