Liquid purification or separation – With means to add treating material – Chromatography
Reexamination Certificate
2008-05-20
2008-05-20
Therkorn, Ernest G. (Department: 1797)
Liquid purification or separation
With means to add treating material
Chromatography
C210S321870, C210S500230, C210S502100, C210S635000, C210S638000, C210S656000
Reexamination Certificate
active
07374673
ABSTRACT:
Polymer fibers having a novel cross-sectional geometry are used as stationary phase materials for liquid chromatography separations. Fibers of 20 to 50 micrometer diameters have surface-channel structures extending their entire lengths. Bundles of fibers having this novel cross-sectional geometry are packed in columns. Different polymer compositions permit the “chemical tuning” of the separation process. Channeled fibers composed of polystyrene and polypropylene have been used to separate mixtures of polyaromatic hydrocarbons (PAHs), Pb-containing compounds and fatty acids. Use of channeled fibers allows a wide range of liquid flow rates with very low backing pressures. Applications in HPLC, cap-LC, prep-scale separations, analytical separations, single fiber separations, waste remediation/immobilization, extraction of selected organic molecules/ions from solution, purification of liquid streams (process waste, drinking water, pure solvents), selective extraction of cell matter and bacteria from growth media, and immobilization of cell matter and bacteria are envisioned.
REFERENCES:
patent: 4111815 (1978-09-01), Walker et al.
patent: 4187333 (1980-02-01), Rembaum et al.
patent: 4657742 (1987-04-01), Beaver
patent: 4957620 (1990-09-01), Cussler
patent: 5160627 (1992-11-01), Cussler et al.
patent: 5234594 (1993-08-01), Tonucci et al.
patent: 5277821 (1994-01-01), Coughlin et al.
patent: 5604012 (1997-02-01), Okamoto et al.
patent: 5855798 (1999-01-01), Phillips et al.
patent: 5961678 (1999-10-01), Pruette et al.
patent: 5972505 (1999-10-01), Phillips et al.
patent: 6270674 (2001-08-01), Baurmeister et al.
patent: 6656360 (2003-12-01), Rohrbach et al.
Clemson University
Dority & Manning P.A.
Therkorn Ernest G.
LandOfFree
Channeled polymer fibers as stationary/support phases for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Channeled polymer fibers as stationary/support phases for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channeled polymer fibers as stationary/support phases for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2803032