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:
Jan. 10, 1995
Filed:
Apr. 17, 1990
Franklin J Carver, Miami, FL (US);
Theodore J Gerula, Miami Lakes, FL (US);
Coulter Corporation, Miami, FL (US);
Abstract
This invention primarily is directed to a hematology reference control solution, the three separate white cell control portions thereof consisting of three types of fixed red cells of determined size distribution for checking the operation of a particle analyzing instrument, including its predetermined lower and upper threshold settings for each class or subclass of leukocytes. For preparing a human granulocyte analogue, nurse shark erythrocytes are altered and fixed in a chilled solution to simulate in number, size and distribution the granulocytes in human whole blood. Such a granulocyte analogue is useful as a free-standing reference control, for determination of human granulocytes only, or can be comingled with reference controls for lymphocytes and mononuclear cells for use with multi-parameter instruments to give a trimodal leukocyte reference control, which itself can be included in a multiple-analysis hematology reference control, having components for also determining red blood cell and platelet parameters.