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:
Jul. 14, 1992
Filed:
Jun. 05, 1990
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
A heat ray screening glass according to this invention comprises a sheet glass, a first layer covered on the sheet glass and which is 55 nm to 70 nm thick and has a refractive index of 1.8 to 2.1 at a wavelength of 550 nm, a second layer covered on the first layer and consisting of a TiO.sub.2 film which is 30 nm to 55 nm thick and has a refractive index of 2.3 to 2.5 at a wavelength of 550 nm, and a third layer covered on the second layer and which is 45 nm to 60 nm thick and has a refractive index of 1.8 to 2.1 at a wavelength of 550 nm, wherein the change in color of the light transmitted through and reflected on the sheet ray screening glass is very little, and a comparative high visible light transmittance and a low visible light reflectivity in the glass can be obtained.