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:
Jul. 13, 1999
Filed:
Nov. 05, 1997
Anthony Revis, Freeland, MI (US);
Diazem Corporation, Midland, MI (US);
Abstract
A bonded phase material useful with a chromatographic separation process. The bonded phase material includes a hydroxyl bearing porous material, a first controlled stoichiometric amount of a first interactive silane covalently bonded to the surface of the hydroxyl bearing porous material and at least one additional interactive silane covalently bonded to the surface of the hydroxyl bearing porous material to provide the porous material with a gradient of functionality of varied polarity creates a unique overall polarity which is not obtainable by the separate interactive silanes themselves. The method of silating the porous material includes sequential application of controlled stoichiometric amounts of the interactive silanes.