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. 26, 1990
Filed:
Jan. 17, 1989
Applicant:
Inventor:
Robert M Sullivan, Washington, PA (US);
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C08K / ; C09C / ;
U.S. Cl.
CPC ...
423593 ; 106479 ; 423 68 ;
Abstract
An improved solid state process for the preparation of compounds based on bismuth vanadate wherein the improvement comprises subjecting the reaction product to wet grinding in alkaline solution or to sequential wet grinding and alkaline treatment, said process modification resulting in the preparation of bright, high tinting yellow pigments.