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. 14, 1989
Filed:
Nov. 24, 1986
Applicant:
Inventor:
William A Welsh, Fulton, MD (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09F / ;
U.S. Cl.
CPC ...
260428 ; 2604107 ; 260420 ; 260424 ; 423339 ;
Abstract
Adsorbents comprising partially dried amorphous silica hydrogels having a moisture content of at least about 25 wt % and an average pore diameter of about 60 Angstroms or less are useful in processes for the removal of trace contaminants, specifically phospholipids and associated metal ions, from glyceride oils. Treatment of the partially dried hydrogels with organic acid increases their adsorption capacity for these trace contaminants.