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. 23, 2003
Filed:
Apr. 12, 2002
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a method for imparting hydrophilicity to a substrate whereby high hydrophilic properties and water-holding properties can be maintained for a long period of time. According to the present invention, an SiO film is formed directly or through an undercoat layer on a substrate under a reduced pressure of 100 Pa or less and immediately after the SiO film is formed, the SiO film is treated with water. Before forming the SiO film, it is also desirable that an undercoat layer consisting of a TiO film, Al O film, Nb O film, a laminated film prepared by laminating the TiO film on the Al O film, a laminated film prepared by laminating the TiO film on the Nb O film, or a low emissivity film be formed on a substrate and the SiO film be then formed on the undercoat film to serve as an SiO composite film.