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:
Sep. 15, 1998
Filed:
Feb. 25, 1997
Applicant:
Inventors:
Carl T Edens, Severna Park, MD (US);
Joseph Katz, Baltimore, MD (US);
Assignee:
Sienna Biotech, Inc., Columbia, MD (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
356246 ; 356336 ; 356338 ;
Abstract
A pre-analysis chamber having reduced turbulence is provided for a flow particle analyzer. The chamber has a conical diverging section for decelerating sheath fluid flow to form a laminar profile, followed by a conical converging section for accelerating flow. A sample inlet tube is supported in the chamber near the interface between the diverging and converging sections, and terminates in the laminar, accelerated sheath flow. The sample enters the laminar sheath flow to form a discrete sample stream.