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:
Mar. 11, 2003
Filed:
Sep. 25, 2000
Applicant:
Inventors:
Assignee:
Merck Patent Gesellschaft, Darmstadt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 1/508 ; B01D 5/314 ; C03C 1/100 ; G01N 3/060 ;
U.S. Cl.
CPC ...
B01D 1/508 ; B01D 5/314 ; C03C 1/100 ; G01N 3/060 ;
Abstract
A capillary column comprising a capillary of which the inner diameter is less than 1000 &mgr;m and a continuous porous silica gel which uniformly fills the capillary, said silica gel containing both continuous through pores having diameters ranging from 0.5-5 &mgr;m and mesopores having diameters ranging from 2-50 nm.