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. 24, 1992
Filed:
Jan. 09, 1991
Applicant:
Inventors:
John R McLaughlin, Media, PA (US);
Fredric A Wright, Chattanooga, TN (US);
Assignee:
PQ Corporation, Valley Forge, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210679 ; 210694 ; 2105021 ; 210506 ;
Abstract
Active or functional materials such as adsorbents, catalysts, defoamers and the like are combined with inert low density particles, preferably hollow microspheres, to provide a functional material of controlled density. This product is introduced into a liquid with a somewhat higher density under agitation for a time sufficient to accomplish the desired function. Then agitation is stopped and the spent product floats to provide easy separation.