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:
Feb. 18, 1992
Filed:
Jun. 13, 1989
Applicant:
Inventors:
Francis Bomo, Lyon, FR;
Yvonick Chevallier, Decines, FR;
Patrick Lamy, Lyon, FR;
Jean-Claude Morawski, Chassieu, FR;
Assignee:
Rhone-Poulenc Chimie de Base, Courbevoie, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524493 ; 524492 ;
Abstract
Mechanically improved elastomeric shaped articles include reinforcing amounts of a particulate silica filler material, said silica filler material comprising at least one precipitated silica having (i) a CTAB surface area of from 20 to 200 m.sup.2 /g, (ii) a mean projected area of aggregates of greater than about 10,000 nm.sup.2, and (iii) an inter-aggregate volume of at least 1 cm.sup.3 /g and an essentially homogeneous inter-aggregate pore population.