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.

Date of Patent:
Oct. 21, 2008

Filed:

Dec. 20, 2004
Applicant:

Dengfeng Xu, Irvine, CA (US);

Inventor:

Dengfeng Xu, Irvine, CA (US);

Assignee:

Varian, Inc., Palo Alto, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/291 (2006.01); B01J 13/14 (2006.01); C01B 33/154 (2006.01); C03B 8/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

Ultraporous sol gel monoliths and methods for preparing the same are provided, having superior flow characteristics for chromatography and analytical chemistry applications. The methods for forming an ultra porous sol-gel monolith include (a) forming a solution comprising a porogen, a matrix dissolving catalyst and a sol gel precursor; (b) allowing the solution to form a gel; and (c) drying the gel at an elevated temperature. The ultraporous sol gel monoliths are characterized by a porosity of up to about 97%, a BET surface area of at least about 50 m/g and substantially no micropores.


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Xu, Dengfeng. (2008). Ultraporous sol gel monoliths (U.S. Patent No. 7439272). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7439272

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