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. 28, 1999
Filed:
Nov. 17, 1997
Applicant:
Inventors:
Assignee:
Sysmex Corporation, Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 10 ; 436-8 ; 436 17 ; 436 63 ; 436164 ; 436166 ; 436172 ; 435 29 ; 435 34 ; 435 39 ;
Abstract
A hematological sample is treated with a hemolytic agent that maintains immature leukocytes in a viable state and damages other leukocytes. The damaged leukocytes are stained with a fluorochrome which can stain damaged cells. At least one kind of scattered light and at least one kind of fluorescence of the treated and stained blood cells are measured to classify and count leukocytes based on the intensities of the scattered light and the fluorescence. Highly precise measurement of immature leukocytes and simultaneous classification and counting of normal leukocytes are achieved.