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:
Feb. 19, 2013
Filed:
Nov. 16, 2010
William H. Steinecker, Farmersville, OH (US);
William H. Steinecker, Farmersville, OH (US);
Nobull Innovation LLC, Dayton, OH (US);
Abstract
Methods for depositing a stationary phase in a tube for chromatography, in particular, as a variable gradient column are disclosed. The methods include providing a tube having a first end and a second end, the tube containing a fluid composition comprising a stationary phase precursor and a solvent, connecting the first end of the tube to a flow device, removing the solvent from a meniscus of the fluid composition, the solvent exiting the tube at the second end, and operating the flow device while removing the solvent such that the amount of the stationary phase precursor deposited within the tube changes as the meniscus retreats within the tube to deposit a stationary phase having a thickness gradient along the length of the interior of the tube.