Eastman-kodak Company

Catassays

Eastman Kodak

Mark Lelental

Henry J Gysling

David A Dickinson

James L Wakley

Charles Chester Anderson

Peter John Ghyzel

Joe E Maskasky

Mitchell Stewart Burberry

John A Agostinelli

Paul Albert Christian

Jeremy M Grace

Thomas N Blanton

David A Glocker

Bradley K Coltrain

John W Boettcher

Dennis R Freeman

David F Jennings

Henry J Romanofsky

Yongcai Wang

Alan R Pitt

Roger L Klaus

Victor P Scaccia

Michael W Orem

Roger J Owers

Jose M Mir

David J Steklenski

Richard C Sutton

Gustavo R Paz-Pujalt

Jehuda Greener

Ralph H Young

James K Lee

John M Noonan

Trevor J Wear

Dennis J Eichorst

Joseph Y Kaukeinen

James C Fleming

James F Elman

William A Light

Scott A Brownstein

John M Pochan

Sylvia A Gardner

Mohammad A Sandhu

Arun K Mehrotra

Robert E Bacon

Ibrahim M Shalhoub

James M Pearson

Gary M Mosehauer

Alan P Vankerkhove

Arthur A Rasch

Ralph A Nicholas, Iii

Daniel J Gisser

David P Sullivan

Gary M Goncher

Stanley W Cowen

Disclosed herein is a composition for ultrasensitive bioassay applications. The composition includes a plurality of dispersible, nanoparticles having a size less than 500 nm. The nanoparticles contain a metal catalyst or a metal catalyst precursor. The nanoparticles are conjugated to at least one biospecific binding reactant that is selectively reactive with a target analyte. The composition includes a dispersing medium. A method and a kit for conducting bioassays are described.

Catalytic marking nanoparticles for ultrasensitive bioassay applications

The invention relates to ultrasensitive bioanalytical assays based on the use of high-gain catalytic chemical amplification methods. The ultrasensitive bioanalytical assays of the invention utilize high gain catalytic chemical amplification methods to detect the presence and to quantify the concentrations of target analytes labeled with specific binding reagents or biomarkers comprising a catalyst or a catalyst precursor.

Ultrasensitive bioanalytical assays based on the use of high-gain catalytic chemical amplification

An element comprising a support on which is disposed an organic electroconductive polymeric layer containing a conductive polymer such that when a printing solution containing a conductivity enhancing agent contacts said electroconductive layer, the resistivity of the areas that are contacted with a printing solution decreases by at least a factor of 10. A method for producing an electrode pattern in the substrate is also disclosed.

Patterning of electrically conductive layers by ink printing methods

A method for producing an electrode pattern in a conductive polymeric layer comprising the steps of: (a) contacting a charge pattern with an electrographic developer composition comprising a carrier and marking particles having a polarity opposite that of said charge pattern thereby producing a developed image pattern, wherein said marking particles contain a conductivity modifier or a precursor thereof; (b) applying the developed image pattern to a conductive layer containing a conductive polymer on a substrate and (c) transferring said image pattern onto a said conductive layer. An element formed by the method is also disclosed.

Electrographic patterning of conductive electrode layers containing electrically-conductive polymeric materials

The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.

Silver-(carboxylate-azine toner) particles for photothermographic and thermographic imaging

A method for producing an electrode pattern in a conductive polymer disposed on a substrate, the method comprising the steps of: applying a layer containing a conductive polymer on a substrate; and printing a pattern on said layer using a printing solution containing a conductivity enhancing agent such that the resistivity of the areas that are contacted with the printing solution decreases by at least a factor of 10. A formulation and a thin film element for performing the method are also disclosed.

Photopatterning of conductive electrode layers containing electrically-conductive polymer particles

An element for making patterns on an electroconductive substrate, the element comprising a support, on which is disposed: a) a conductive layer containing an electrically conductive polymer, a polyanion and a conductivity enhancing agent; and b) a mixing layer containing a thermally mobile material; wherein, upon imagewise heating the mixing layer, the thermally mobile material mixes with the conductive layer, thereby causing the initial surface resistivity (SR) of the conductive layer to imagewise increase from an initial value SR, which is lower than 10&#x3a9;/square, to SR&#x394;, &#x394; being at least 10.

Method of patterning an electroconductive layer on a support

An imaging material comprising a support having disposed thereon: a) at least one image-formning layer, and b) at least one transparent electrically conductive antistatic layer that comprises electronically conductive polymer particles, a neutral-charge conductivity enhancer, and a polymeric binder comprising gelatin or gelatin derivatives.

Imaging materials with conductive layers containing electronically conductive polymer particles

A thermally imageable element can be imaged using heat alone without the need for photosensitivity or post-imaging processing. The element contains image-forming chemistry that comprises i) image precursor chemistry and ii) a catalyst or a catalyst precursor that upon imagewise heating is capable of promoting thermally induced image formation with the image precursor chemistry. The image-forming chemistry i) and ii) components are in reactive association and uniformly dispersed or dissolved within a binder in one or more layers of the element. Thus, the element is capable of being thermally addressed to provide a visible image as a result of thermally induced catalytic transformation of the image-forming chemistry.

Thermally imageable elements and processes for their use

Chemically sensitized aqueous-based photothermographic emulsions and materials and methods of using same

Image-forming materials including photographic, thermographic, and thermally-developable imaging materials include one or more transparent electrically conductive, non-charging layers to provide antistatic control on one or both sides of subbed or unsubbed supports. The electrically conductive, non-charging layers comprise colloidal, electrically conductive polymer particles that can be dispersed in a film-forming binder in an amount to provide from about 10 to about 90 volume % of polymer particles. Particularly useful polymer particles include pyrrole-containing, thiophene-containing, and aniline-containing polymers. The particles generally exhibit a packed powder specific resistivity of 10 ohm-cm or less and generally have a mean diameter of 0.5 &mgr;m or less. The electrically conductive, non-charging layers generally exhibit a surface electrical resistivity of less than 1&times;10 ohm per square.

Imaging materials comprising electrically conductive polymer particle layers

Silver-(carboxylate-azine toner) particles for photothemographic and thermographic imaging

The present disclosure relates to dispersions of silver (carboxylate-n-alkyl thiolate). The carboxylates are typically silver salts of long chain fatty acids and the n-alkyl thiolate is preferably 1-dodecanethiol. These silver (carboxylate-n-alkyl thiolate) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.

Silver (carboxylate-n-alkyl thiolate) particles for photothermographic of thermographic imaging

Thermographic imaging elements and processes for their use

Growing community of inventors

Rochester, NY, United States of America

Mark Lelental