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:
Dec. 08, 1992
Filed:
Sep. 25, 1990
Yehuda Shalon, St. Louis, MO (US);
Tadmor Shalon, St. Louis, MO (US);
HT Chemicals, Inc., St. Louis, MO (US);
Abstract
A liquid chromatography column that can be rapidly packed without a reservoir column is disclosed. The column includes a double sealed compressor piston with a mixture delivery bore extending through the body of the piston. Resilient sealing means are provided in annular grooves provided in the piston. The piston retains a frit and slurry scraper is mounted to the piston. A method of packing such a column is also disclosed. An outlet end plate including solvent drainage bores is provided. A threaded end cap including radial slots in an inner surface for a threaded column is disclosed, as is an adaptor for joining flanged and threaded columns.