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:
Dec. 25, 1990
Filed:
Sep. 18, 1989
Junichi Handa, Toyota, JP;
Hiroshi Itou, Ichinomiya, JP;
Taketoshi Minohara, Toyota, JP;
Yoshio Takagi, Nagoya, JP;
Abstract
A production process of pigment according to this invention comprises the steps of: a first step of forming an inorganic compound coating layer on the entire surfaces of scaly substrates made of ceramic; a second step of forming metallic glossy dots on the surfaces of the inorganic compound coating layer in a scattered manner by an electroless plating, and the metallic glossy dots occupying from 0.05 to 95% of the surfaces of the inorganic compound coating layer with respect to the total surface area of the inorganic compound coating layer; and a third step of irradiating ultraviolet ray on particles formed by the second step. The impurities and the like, which adversely affect the color hue of the pigment, have been discolored or faded away by the ultraviolet ray irradiation in the third step. Accordingly, the pigment having good weather resistance can be produced readily and stably by the present invention.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile