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:
Jul. 12, 1994
Filed:
Jul. 22, 1992
Applicant:
Inventors:
Masao Isobe, Yokohama, JP;
Yoshio Aizawa, Yokohama, JP;
Assignee:
Nippon Oil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524 70 ; 524 68 ;
Abstract
An asphalt composition for use in road pavements is disclosed which comprises chiefly of an asphalt of natural or petroleum origin, a thermoplastic elastomer and/or a styrene-butadiene rubber and a low molecular weight polypropylene. These components are premixed or plant-mixed to form a reformed asphalt which is mixed with an aggregate to provide a paving material having increased compression strength, increased low temperature viscosity and decreased high temperature viscosity.