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. 28, 1996
Filed:
Aug. 29, 1994
Applicant:
Inventors:
Alexander Tapper, Monchengladbach, DE;
Gunther Schimmel, Enftstadt, DE;
Hans-Peter Rieck, Hofheim, DE;
Gerhard Noltner, Frankfurt am Main, DE;
Assignee:
Hoechst AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29B / ;
U.S. Cl.
CPC ...
264 15 ; 264117 ; 264118 ; 264122 ; 264140 ;
Abstract
To prepare a compacted, granular sodium silicate having an SiO.sub.2 /Na.sub.2 O molar ratio of 1.7:1 to 4.1:1, sodium silicate having a median particle diameter of <500 .mu.m is first mixed with a material increasing its hardness before being converted into pressed granules having particle sizes of 0.1 to 5 mm by compacting, comminution and screening.