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. 02, 2006
Filed:
Dec. 14, 2001
Applicants:
Willem Hendrik Dokter, Almere, NL;
Willem Taede Hulshof, Zeewolde, NL;
Nicolaas H. M. Leliveld, Maastricht, NL;
Jürgen Koltzer, Heimbach, DE;
Inventors:
Willem Hendrik Dokter, Almere, NL;
Willem Taede Hulshof, Zeewolde, NL;
Nicolaas H. M. Leliveld, Maastricht, NL;
Jürgen Koltzer, Heimbach, DE;
Assignee:
Grace GmbH & Co. KG, Worms, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention pertains to precipitated silica particles having edged surfaces and a length: width: depth ratio of 1:1:1 to 3:3–1:1 with the length being 0.25 to 15 mm, an absorbing capacity PV water (wt. % >;125, a pore volume PV Hg (ml/g) 0.8–4, a pore volume PV N2 (ml/g) 0.2–1.5, a bulk density BD (g/l) 200–500, and preferably a pH<8, for use as a cat liter.