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. 28, 1995
Filed:
Nov. 22, 1993
Burleigh M Hutchins, Milford, MA (US);
Raymond R Dunlap, Douglas, MA (US);
Timothy J Conklin, Lynnfield, MA (US);
Bruce A Swanson, Mansfield, MA (US);
John Petracca, W. Upton, MA (US);
Louis Abrahams, Worcester, MA (US);
Ronald A Kimball, Brookfield, MA (US);
Zymark Corporation, Hopkinton, MA (US);
Abstract
A liquid chromatography system including a liquid pump having a pumping chamber, an inlet port, an outlet port, and a purge port, all communicating with the pumping chamber; a separation column; an outlet valve connected between the outlet port and the separation column and adapted to control liquid flow therebetween; a source of mobile phase; an inlet valve connected between the inlet port and the source and adapted to control liquid flow therebetween; and a purge valve connected to the purge port.