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. 29, 1988
Filed:
Apr. 09, 1987
Applicant:
Inventors:
Junichi Sato, Kawana, JP;
Tomoyoshi Yamada, Toyohashi, JP;
Junichiro Naito, Toyokawa, JP;
Kunihisa Shigenobu, Nagoya, JP;
Kouichi Sato, Aichi, JP;
Assignee:
Toyoda Gosei Co., Ltd., Nishikasugai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ; E04B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
4283173 ; 181208 ; 181288 ; 181294 ; 4283177 ; 4283191 ; 4283197 ; 428519 ;
Abstract
This invention is directed to a vibration damping soundproof sheet for use in vehicles, in which the surface of the soundproof layer is made flat irrespective of the or uneven configuration at the surface of a vehicle. The soundproof layer-forming material comprises a formed rubber blend in which a foaming agent and other rubber blending agents are blended with a rubber type polymer in which the soundproof layer-forming material contains from 15 to 85% by weight of 1,2-polybutadiene ingredient.