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:
Oct. 20, 1981
Filed:
Jul. 12, 1979
Henry R Angel, Fairfield, CT (US);
James W Hennessy, Trumbull, CT (US);
Hycel, Inc., Houston, TX (US);
Abstract
In particle counting apparatus such as a hematology parameter measurement apparatus for performing multiple measurements on one blood sample, first and second impedance transducers, each including inner and outer electrodes, are provided for selective hydraulic connection to a probe head including one set of pressure ports and a further inner electrode. The first and second transducers are respectively immersed in first and second dilutions of the sample. Measurements on each dilution are made in a conventional manner. The inner electrodes are connected in parallel as are the outer electrodes so that small liquid passageways may be provided between the transducers and the probe head while maintaining a low impedance in the liquid path. Means are provided for selecting the sequence of operations and are provided to increase the throughput of samples for which multiple measurements are made.