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. 17, 1984
Filed:
Mar. 09, 1982
Atsushi Nishino, Neyagawa, JP;
Kazunori Sonetaka, Hirakata, JP;
Kunio Kimura, Hirakata, JP;
Yoshihiro Watanabe, Moriguchi, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
In a method of forming porcelain enamel layer on a metal substrate, the method comprises steps of applying a first coating for an underlying ground layer and a second coating for overlying self-cleaning layer or coloring layer, and the method is characterized by firing both of said first coating and said second coating at the same time, forming a double layered porcelain enamel layer having an inter-layer wherein both layers are mixed, thus giving a sufficient bonding force inbetween as well as strong corrosion resistivity of the substrate due to few pinholes and bubbles in the underlying ground coating.