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:
Jun. 06, 2000
Filed:
Nov. 26, 1997
Seiya Takahata, Mishima, JP;
Usui Kokusai Sangyo Kaisha Limited, Shizuoka Prefecture, JP;
Abstract
The present invention has for its object to obtain a heat-resistant and anticorrosive multilayer metal-plated steel object which excels in the uniformity of high-efficiency processability and anticorrosiveness. The steel object provided by the present invention to achieve such object comprises a steel substrate, a Ni-layer plated over the surface of the steel substrate to a thickness of 0.2-10 .mu.m, a first Zn/Ni alloy layer plated over the Ni-layer to a thickness of 1-15 .mu.m from an acid bath, such as a chloride bath or sulfuric acid bath, with the Ni-content of the first layer being in the range of 2-20% by weight and a second Zn/Ni alloy layer plated over the first Zn/Ni alloy layer to a thickness of 1-10 .mu.m from an alkaline bath, with the Ni-content thereof being in the range of 2-20% by weight.