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:
Jun. 10, 2003
Filed:
Nov. 28, 2000
Gary T. Neel, Indianapolis, IN (US);
James R. Parker, Indianapolis, IN (US);
Rick L. Collins, Cicero, IN (US);
David E. Storvick, Indianapolis, IN (US);
Charles L. Thomeczek, Jr., Fishers, IN (US);
William J. Murphy, Cicero, IN (US);
George R. Lennert, Fishers, IN (US);
Morris J. Young, Indianapolis, IN (US);
Daniel L. Kennedy, Indianapolis, IN (US);
Roche Diagnostics Corporation, Inc., Indianapolis, IN (US);
Abstract
In combination, an instrument for determining a characteristic of a biological fluid or a control, and a cuvette for holding a sample of the biological fluid or control, the characteristic of which is to be determined. The instrument comprises a radiation-reflective surface, a first source for irradiating the surface, and a first detector for detecting radiation reflected from the surface. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls. The radiation reflective surface is disposed adjacent a second of the two opposed walls. A second source is provided for irradiating the surface. The first detector detects radiation from the second source reflected from the surface. The second source is positioned to transmit radiation through the two opposed walls for reflection by the surface and transmission back through the two opposed walls to the first detector to indicate whether a sample has reached a first point in the cuvette.