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:
Sep. 16, 2014
Filed:
Jun. 13, 2009
Koji Ikegami, Otsu, JP;
Toshimasa Kanai, Otsu, JP;
Koji Ikegami, Otsu, JP;
Toshimasa Kanai, Otsu, JP;
Nippon Electric Glass Co., Ltd., Shiga, JP;
Abstract
To provide a top plate for a cooking device which has low transmittance in a visible wavelength range and high transmittance in an infrared wavelength range of 3500 nm to 4000 nm. A top platefor a cooking device includes: a glass substrate; and a layered coatingmade of a Si filmand a silicon nitride filmwhich are formed on the glass substrate. Where trepresents the thickness of the Si filmand trepresents the thickness of the silicon nitride film, (t, t) in FIG.showing the relation between the thickness tof the Si film and the thickness tof the silicon nitride film is within the bounds X defined by connecting Points A1 to A36 shown in TABLE 1 in this order with straight lines.