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:
May. 12, 2015
Filed:
Jan. 11, 2011
John Auclair, Seekonk, MA (US);
James E. Usowicz, Webster, MA (US);
Tony A. Lin, Ashland, MA (US);
Marc Lemelin, Douglas, MA (US);
Robert A. Jencks, Mendon, MA (US);
Kenneth R. Plant, Leominster, MA (US);
John Auclair, Seekonk, MA (US);
James E. Usowicz, Webster, MA (US);
Tony A. Lin, Ashland, MA (US);
Marc Lemelin, Douglas, MA (US);
Robert A. Jencks, Mendon, MA (US);
Kenneth R. Plant, Leominster, MA (US);
Waters Technologies Corporation, Milford, MA (US);
Abstract
Described is a compound sample needle for a liquid chromatography system. In one embodiment, the compound sample needle includes a rigid needle having a coupling end with a face and a counterbore. The compound sample needle also includes a flexible tubing having an outer surface and a coupling end disposed in the counterbore of the rigid needle. The coupling end of the flexible tubing has a face adjacent to a base of the counterbore. The coupling ends of the rigid needle and flexible tubing are secured to each other by a weld formed along a circumference of the outer surface and the face of the rigid needle. A rigid sleeve protects the welded joint. The compound sample needle is suitable for injection into the high pressure mobile phase of ultra performance liquid chromatography systems.