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. 25, 1994
Filed:
Sep. 05, 1991
Applicant:
Inventors:
Klaus W Berndt, Baltimore, MD (US);
Joseph R Lakowicz, Columbia, MD (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
2504581 ; 2504591 ;
Abstract
A method and apparatus for using a square wave- or sinewave-driven electroluminescent lamp (ELL) as a source of periodically pulsed excitation light for a luminescent molecule, wherein changes in decay time, phase angle and/or modulation of the emitted luminescence are detected as parameters that correspond to changes in luminescence lifetimes.