Ronald A Wellman

US Patent:

47881402, Nov 29, 1988

Filed:

Feb 18, 1986

Appl. No.:

6/830036

Inventors:

John B. Findlay - Rochester NY
Brent A. Burdick - Rochester NY
Ronald A. Wellman - Rochester NY
Mark E. Shafer - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C12Q 150
C12Q 128
G01N 148

US Classification:

435 17

Abstract:

A multilayer analytical element for the determination of a clinically significant enzyme analyte comprises a photosensitive compound (e. g. a photosensitive dye or dye precursor) and a filter layer containing one or more filter dyes. The filter layer is situated in the element such that incident radiation used to detect a density change resulting from interaction of the analyte and the photosensitive compound passes through the filter layer before it reaches the photosensitive compound. The use of the filter layer inhibits premature changes in the photosensitive compound caused by incident radiation. This element is particularly useful for the determination of creatine kinase or one of its isoenzymes, e. g. creatine kinase-MB.

US Patent:

39804780, Sep 14, 1976

Filed:

Jul 5, 1974

Appl. No.:

5/485697

Inventors:

Irvin H. Crawford - Hamlin NY
Ronald A. Wellman - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 518

US Classification:

96 27R

Abstract:

Images are recorded on ultraviolet-light sensitive recording materials employing photographic intermediates which function optically to reflect visible light and transmit ultraviolet light. To give the intermediates the desired optical function, a polyolefin compounded with certain white pigments is included as a sublayer between the paper support sheet and photosensitive layer.