Patents by Inventor Mark Lelental

Mark Lelental has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9933421
    Abstract: 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.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: April 3, 2018
    Assignee: CatAssays
    Inventors: Mark Lelental, Henry J. Gysling
  • Publication number: 20150050672
    Abstract: 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 are 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 is described.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 19, 2015
    Applicant: CatAssays
    Inventors: Mark Lelental, Henry J. Gysling
  • Patent number: 7820394
    Abstract: 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.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: October 26, 2010
    Assignee: CatAssays
    Inventors: Mark Lelental, Henry J. Gysling
  • Publication number: 20070128679
    Abstract: 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.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 7, 2007
    Inventors: Mark Lelental, Henry Gysling
  • Patent number: 7163734
    Abstract: 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.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: January 16, 2007
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Mitchell S. Burberry, Mark Lelental, Yongcai Wang
  • Patent number: 7033713
    Abstract: 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.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: April 25, 2006
    Assignee: Eastman Kodak
    Inventors: Mark Lelental, Mitchell S. Burberry, Charles C. Anderson
  • Patent number: 6919171
    Abstract: 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.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: July 19, 2005
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Patent number: 6893790
    Abstract: 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.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: May 17, 2005
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Charles C. Anderson, Yongcai Wang
  • Patent number: 6872500
    Abstract: 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 SRi, which is lower than 105?/square, to SRi?, ? being at least 102.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: March 29, 2005
    Assignee: Eastman Kodak Company
    Inventors: Mitchell S. Burberry, Charles C. Anderson, Mark Lelental
  • Publication number: 20050048406
    Abstract: 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 SRi, which is lower than 105 ?/square, to SRi?, ? being at least 102.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Mitchell Burberry, Charles Anderson, Mark Lelental
  • Publication number: 20050048405
    Abstract: 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.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Mark Lelental, Charles Anderson, Yongcai Wang
  • Publication number: 20050048391
    Abstract: 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.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Mark Lelental, Mitchell Burberry, Charles Anderson
  • Publication number: 20050048228
    Abstract: 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.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Charles Anderson, Mitchell Burberry, Mark Lelental, Yongcai Wang
  • Patent number: 6800429
    Abstract: 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.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: October 5, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Charles C. Anderson, John M. Pochan, James L. Wakley, James F. Elman
  • Publication number: 20040157177
    Abstract: 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.
    Type: Application
    Filed: December 23, 2003
    Publication date: August 12, 2004
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Patent number: 6759368
    Abstract: 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.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: July 6, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Henry J. Gysling, David F. Jennings
  • Publication number: 20040092398
    Abstract: 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.
    Type: Application
    Filed: June 30, 2003
    Publication date: May 13, 2004
    Inventors: Mark Lelental, Henry J. Gysling, David F. Jennings
  • Patent number: 6733959
    Abstract: Photothermographic materials prepared using aqueous formulations include silver halides that are chemically sensitized using certain tellurium-containing compounds. Such tellurium-containing chemical sensitizing compounds are generally provided in aqueous solution or in an aqueous solid particulate dispersion and can be represented by the following Structure I, II, or III: Te(L)m(X1)n  (II) Pd(X2)2[Te(R′)2]2  (III) wherein X represents the same or different COR, CSR, CNRRa, CR, PRRa, or P(OR)2 groups, R and Ra are independently alkyl, alkenyl, or aryl groups, L is a ligand derived from a neutral Lewis base, X1 and X2 independently represent a halo, OCN, SCN, S2CNRRa, S2COR, S2CSR S2P(OR)2, S2PRRa, SeCN, TeCN, CN, SR, OR, alkyl, aryl, N3, or O2CR group, R′ is an alkyl or aryl group, p is 2 or 4, m is 0, 1, 2, or 4, and n is 2 or 4 provided that when m is 0 or 2, n is 2 or 4, and when m is 1 or 4, n is 2.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: May 11, 2004
    Assignee: Eastman Kodak Company
    Inventors: Henry J. Gysling, David A. Dickinson, Mark Lelental, John W. Boettcher
  • Patent number: 6709808
    Abstract: 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 105 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 1×1012 ohm per square.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: March 23, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Gary M. Mosehauer, Roger J. Owers, James L. Wakley
  • Patent number: 6692906
    Abstract: 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.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: February 17, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton