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:
May. 28, 1991
Filed:
Sep. 21, 1989
Applicant:
Inventors:
Hiroyuki Kaidoo, Yokohama, JP;
Takao Muraki, Hiratsuka, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524346 ; 524496 ; 524566 ; 524575 ; 5245755 ; 525164 ;
Abstract
Rubber compositions are disclosed which exhibit enhanced dynamic modulus and tensile strength characteristics. A selected type of carbon black, resorcinsol and/or its precondensate and hexamethoxymethyl melamine are combined in specified amounts with a selected class of starting rubbers. The carbon black has specified nitrogen adsorption surface area, dibutyl phthalate adsorptivity and Dst mode of diameter.