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:
Oct. 27, 2009
Filed:
Sep. 08, 2006
Applicants:
Oleg Stenzel, Cologne, DE;
Hans-detlef Luginsland, Hoboken, NJ (US);
Stefan Uhrlandt, Belle Mead, NJ (US);
Andre Wehmeier, Rheine, DE;
Inventors:
Oleg Stenzel, Cologne, DE;
Hans-Detlef Luginsland, Hoboken, NJ (US);
Stefan Uhrlandt, Belle Mead, NJ (US);
Andre Wehmeier, Rheine, DE;
Assignee:
Degussa AG, Duesseldorf, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Precipitated silicas useful, for example, as fillers in elastomer mixtures or vulcanizates have a particularly broad pore size distribution of the pores with a pore diameter smaller than that of the maximum of the derivative of the pore volume distribution function, and have simultaneously very low microporosity and high rubber activity.