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. 15, 1984
Filed:
Feb. 24, 1983
John W Jenkins, Reading, GB;
John Wolstenholme, Reading, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
A colored inorganic complex of titanium, stannous and zinc oxides for use in making pigments capable of imparting for example red, yellow or green colors to plastics, paints, glasses or ceramics without reliance on toxic moieties. A wider range of colors can be obtained if the complex is used in a pigment system comprising excess oxides of titanium and zinc or stannic tin. The complex is preferably made by adding an acidified aqueous solution of ions of the metals (e.g. as metal sulphates or metal halides) to alkali so as to precipitate the oxides or oxide precursor such as hydrated oxides which are then washed and fired at over 450.degree. C. to form the complex. The colors obtained may be adjusted by the presence of traces of residual alkali metal moiety.