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:
May. 19, 1981
Filed:
Jul. 13, 1979
Applicant:
Inventor:
Andre R Von Wattenwyl, Reinach, CH;
Assignee:
Parke, Davis & Company, Morris Plains, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
8438 ; 8440 ; 8517 ; 8646 ; 260117 ;
Abstract
Process for stabilizing dyestuffs sensitive to light and/or oxidation, especially natural dyestuffs, by adsorption on a highly disperse adsorbent, whereby the dyestuff is immobilized, as well as the application of the process to dyestuffs which are determined for dyeing medicines, for instance gelatine capsules for medicinal purposes, cosmetics, food stuffs and animal feed.