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:
Sep. 27, 1994
Filed:
Apr. 22, 1993
Applicant:
Inventors:
Johann Dietz, Dietzenbach, DE;
Klaus Franz, Kelkhiem, DE;
Gerhard Pfaff, Munster, DE;
Reiner Vogt, Wixhausen, DE;
Katsuhisa Nitta, Fukushimi, JP;
Assignee:
Merck Patent Gesellschaft Mit Beschrankter Haftung, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106441 ; 252518 ; 252520 ; 106415 ; 106482 ;
Abstract
A process for the preparation of light-colored, electrically conductive pigments based on substrates having an expansion of not more than 500 .mu.m, which pigments consist of one or more metals, metal oxides or materials containing metal oxide, silicon oxide or silicate materials and contain, if desired above one or more other metal oxide and/or silicon oxide layers, an outer layer based on halogen-doped tin oxide and/or titanium oxide.