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:
Nov. 29, 1994
Filed:
Mar. 02, 1993
Applicant:
Inventors:
Michael Grebner, Mainz, DE;
Axel Reich, Schornsheim, DE;
Horst Reichert, Mainz, DE;
Ferdi Schuth, Mainz, DE;
Klaus Unger, Seeheim-Jugenheim, DE;
Assignee:
Merck Patent Gesellschaft mit beschrankter Haftung, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423706 ; 423709 ; 4233283 ; 423331 ; 502 64 ;
Abstract
The invention relates to a process for the preparation of low-template clathrasil, comprising heat-treating an alkaline aqueous silicate-containing medium containing crystallization seeds and an amount of a template such that the template content of the clathrasil, relative to the number of moles of the SiO.sub.2 of the medium, is less than 2 mol %.