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. 22, 1999
Filed:
May. 29, 1996
Applicant:
Inventor:
Kazuyuki Usuki, Kanagawa-ken, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; B05D / ;
U.S. Cl.
CPC ...
427128 ; 427129 ; 427130 ; 427131 ; 427255 ; 427387 ; 4286 / ; 428900 ;
Abstract
A coating film, which is constituted of a polysilazane, is formed on a substrate. The polysilazane in the coating film is then oxidized by being brought into contact with active oxygen or ozone, or by being exposed to light. A protective film, which is constituted of silica, is thereby formed on the substrate. An inorganic protective film is also provided, which comprises an inorganic oxide film, that is obtained by subjecting a polysilazane coating film to oxidation treatment, and fine particles contained in the inorganic oxide film.