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:
Mar. 03, 1992
Filed:
Oct. 26, 1990
Yukichi Watanabe, Yokohama, JP;
Tomeji Doi, Kanagawa, JP;
Masafumi Yoshida, Hiroshima, JP;
Hidekazu Tsubone, Hiroshima, JP;
Norio Chiba, Saitama, JP;
Kunio Kawasaki, Hiroshima, JP;
Masahiro Dohi, Hiroshima, JP;
Hiroshi Kodama, Hiroshima, JP;
Yoshitaka Takamiya, Hiroshima, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A vibration-damping composite sheet steel made by sandwiching a viscoelastic material between two steel sheets. A rust proofing coating which generates no gaseous matter is formed on one surface of each of the steel sheets which is contacted with the viscoelastic material. The coating is a phosphate coating having no water of crystallization with a coating weight per unit area of 0.5 g/m.sup.2 or over, or a galvanized zinc coating including no zinc oxide.