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. 25, 1987
Filed:
Oct. 19, 1984
Applicant:
Inventors:
Robert J Nelson, North Chicago, IL (US);
Dean M Ball, Gainesville, GA (US);
Assignee:
Abbott Laboratories, North Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
435291 ; 435808 ; 356 39 ; 356436 ; 356134 ;
Abstract
An air/fluid sensing device useful in apparatus for analyzing biological material. The device includes one or more light sources directed at a surface of a container defining an interface with the space enclosed thereby. Depending on whether fluid is present in or absent from the container at the location where said one or more light sources are directed to said surface, the light emanating from the sources will be refracted or reflected, thereby giving an indication of whether fluid is present or absent at said locations.