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. 06, 2000
Filed:
Aug. 26, 1997
Seiji Yamazaki, Mie, JP;
Kensuke Makita, Mie, JP;
Yasuaki Kai, Yokohama, JP;
Satoko Sugawara, Yokosuka, JP;
Takashi Seino, Yokosuka, JP;
Nissan Motor Co., Ltd, Yokohama, JP;
Central Glass Company, Limited, Ube, JP;
Abstract
The invention relates to a hydrophilic film formed on a substrate. This film has a hydrophilic outermost layer having a matrix phase containing titania and a disperse phase constituted of at least one compound of silica and alumina. The matrix phase may further contain an amorphous metal oxide. With this, the outermost layer becomes superior in abrasion resistance. The at least one compound of the disperse phase may be a non-spherical colloidal silica. With this, the outermost layer becomes substantially improved in scratch resistance. The outermost layer is formed on the substrate by a method including sequential steps of (a) providing a sol mixture including a first sol containing a precursor of the titania and a second sol containing the at least one compound; (b) coating the substrate with the sol mixture, thereby to form thereon a precursory film; and (c) baking the precursory film into the outermost layer.