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:
Aug. 17, 1999
Filed:
Jan. 08, 1998
Applicant:
Inventors:
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356338 ; 356343 ; 356 39 ; 356 73 ;
Abstract
A method and apparatus for determining the size distribution of at least two different types of fluorescent or fluorescently stained particles in a sample by radiating light into a stream of singled particles and recording and analyzing both the scattered light and the fluorescent light. A relative particle size distribution for each individual particle type (T.sub.k) is calculated and then the relative particle size distribution for the individual particle types is normalized forming a joint relative particle size distribution of the at least two particle types with respect to one another.