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:
Nov. 28, 1989
Filed:
Dec. 14, 1987
Shuji Kitamura, Nagaokakyo, JP;
Takuzo Okumura, Tokyo, JP;
Yoshio Tadokoro, Ibaraki, JP;
Hiroo Toya, Ibaraki, JP;
Yoshiaki Togawa, Kyoto, JP;
Toshitsugu Kikuchi, Ibaraki, JP;
Tadayuki Ohmae, Chiba, JP;
Mitsuyuki Okada, Ichihara, JP;
Minoru Nishihara, Kyoto, JP;
Toshiaki Shiota, Takatsuki, JP;
Hiroyuki Nagai, Nishinomiya, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A vibration-damping material consisting of two metal plates and a vibration-damping layer of thermoplastic resin interposed between the two metal plates, in which said thermoplastic resin has a percentage of wlongation at 20.degree. C. of 30% or more, preferably 50% or more, a peak temperature of dissipation factor (tan .delta.) in the range of -50.degree. C. to 130.degree. C., and a bonding strength toward the metal plates of 3 kg/cm or more as determined by 180.degree.-peeling test at 20.degree. C.