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:
Apr. 01, 2008
Filed:
Nov. 04, 1999
Applicants:
Cornelis Roeland Bayense, Gameren, NL;
Durk Ykema, De Meern, NL;
Inventors:
Cornelis Roeland Bayense, Gameren, NL;
Durk Ykema, De Meern, NL;
Assignee:
Engelhard Corporation, Iselin, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C01F 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention is directed to star shaped alumina extrudates with a pore volume in the pores of a diameter over 1000 nm, as determined by mercury porosity, of at least 0.05 ml/g and a total pore volume between 0.5-0.75 ml/g. The extrudates have a length of between 2-8 mm, a length to diameter ratio of between 1-3, a side crushing strength of at least 50 N and a bulk crushing strength of at least 1 MPa.