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. 26, 1989
Filed:
Apr. 12, 1988
Applicant:
Inventors:
Roderich Raue, Leverkusen, DE;
Hubertus Psaar, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
430106 ; 430110 ;
Abstract
A dry toner for developing latent electrostatic images in electrostatic recording and printing methods contains, as charge-control substance, a pigment of the formula ##STR1## in which A.sup.- represents an anion of a heteropolyacid based on tungsten and/or molybdenum with phosphorus, vanadium, cobalt, aluminium, manganese, chromium and/or nickel or a copper(I) hexacyanoferrate anion,
Raue, Roderich. (1989). Dry toners containing fanal pigments based on cationic dyes (U.S. Patent No. 4869989). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4869989
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile