Liquid purification or separation – Filter – Material
Reexamination Certificate
2007-06-27
2009-06-30
Fortuna, Ana M (Department: 1797)
Liquid purification or separation
Filter
Material
C210S660000, C210S767000, C210S262000, C423S338000, C502S063000
Reexamination Certificate
active
07553416
ABSTRACT:
New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like. Methods of production and use, as well as the novel gel materials themselves, particularly caustic and composite gels, are thus encompassed within this invention.
REFERENCES:
patent: 4148864 (1979-04-01), Groth et al.
patent: 4279879 (1981-07-01), Winyall et al.
patent: 4659467 (1987-04-01), Spearman
patent: 4826536 (1989-05-01), Raythatha et al.
patent: 4954220 (1990-09-01), Rushmere
patent: 5219660 (1993-06-01), Wason et al.
patent: 5342876 (1994-08-01), Abe et al.
patent: 5352271 (1994-10-01), Margaria et al.
patent: 5419888 (1995-05-01), McGill et al.
patent: 5601699 (1997-02-01), Degnan et al.
patent: 6380265 (2002-04-01), Pryor et al.
patent: 6689437 (2004-02-01), Ubara et al.
patent: 6733771 (2004-05-01), Minard et al.
patent: 6872765 (2005-03-01), Betz et al.
patent: 6905778 (2005-06-01), Tullos et al.
patent: 6969692 (2005-11-01), Brady et al.
Office Action in Co-pending U.S. Appl. No. 11/823,436, dated Jan. 26, 2009.
Office Action in Co-pending U.S. Appl. No. 11/823,436, dated Oct. 6, 2008.
Godwin Francis R. W.
Hua Duen-Wu
Sinclair Fitzgerald A.
Withiam Michael C.
Ades Patricia L.
Fortuna Ana M
J.M. Huber Corporation
Tubach Cheryl J.
LandOfFree
Caustic silica gel manufacturing method and gels made thereby does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Caustic silica gel manufacturing method and gels made thereby, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Caustic silica gel manufacturing method and gels made thereby will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4131944