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:
Aug. 21, 2007
Filed:
Mar. 19, 2002
Applicant:
Edward B. Ledford, Jr., Lincoln, NE (US);
Inventor:
Edward B. Ledford, Jr., Lincoln, NE (US);
Assignee:
Zoex Licensing Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An Apparatus and method for two-stage chromatographic separation uses thermal modulation. The chromatographic column or modulation tube () has a loop structure such that two portions of modulation tube () can be thermally modulated simultaneously by at least one thermal modulation device, which device can have a cold gas source, jet tube (), and a hot gas source, hot jet tube (), to modulate the temperature of the portions () of modulation tube ().
Ledford, Jr., Edward. (2007). Method and apparatus for measuring velocity of chromatographic pulse (U.S. Patent No. 7258726). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7258726
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