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:
Apr. 07, 1998
Filed:
Jan. 31, 1995
Applicant:
Inventors:
Paul E Upchurch, Coupeville, WA (US);
Hans G Schick, Anacortes, WA (US);
Assignee:
Upchurch Scientific, Inc., Oak Harbor, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2101982 ; 210656 ;
Abstract
A biocompatible column for use in high pressure liquid chromatography applications includes a biocompatible, polymeric inner tube which is located within a metallic outer tube. The polymeric inner tube has end fittings and the inner polymeric tube and such end fittings and comprise a unitary piece. Alternatively, the outside ends of the outer tube may be threaded so that appropriate polymeric end fittings can be removably attached to each end of the column. A liquid chromatography system in which the column of the present invention is used is also shown and described.