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:
May. 31, 2016
Filed:
Mar. 28, 2014
Nihon Yamamura Glass Co., Ltd., Hyogo, JP;
Abstract
An insulating layer forming material and an insulating layer forming paste capable of forming an insulating layer on a metallic substrate without the filler and glass reacting or warpage occurring even when repeatedly fired at 850° C. or higher are provided. The insulating layer forming material containing a lead-free glass composition and an α-quartz filler contains 17.0-40.0 wt. % of the α-quartz filler and 60.0-83.0 wt. % of the lead-free glass composition. The α-quartz filler has an average particle diameter (D) of 1.0-3.5 μm and a specific surface area of 2.5-6.5 m/g. The lead-free glass composition includes no BOand comprises a composition, in mol %, of 40.0-60.0% SiO, 0.5-10.0% AlO, 20.0-45.0% MgO+CaO+SrO+BaO, 5.0-23.0% ZnO, and 0-10.0% LiO+NaO+KO.