Patents by Inventor Dilip K. Chatterjee
Dilip K. Chatterjee 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).
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Patent number: 6673388Abstract: A method of making a charge containing element including the steps of depositing and patterning a dielectric material on a surface wherein the dielectric material includes a metallo-organic component and a liquid component; and decomposing by laser light the deposited dielectric material to substantially evaporate the liquid component to cause the metallic portion of the metallo-organic component to react with oxygen causing the dielectric material to have charge-holding properties.Type: GrantFiled: April 27, 2001Date of Patent: January 6, 2004Assignee: Eastman Kodak CompanyInventors: Thomas N. Blanton, Syamal K. Ghosh, Donn B. Carlton, Dilip K. Chatterjee
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Patent number: 6620456Abstract: A method of forming a dielectric layer on a substrate, including the steps of providing a metallo-organic material in a solvent, which dissolves such metallo-organic material; coating dissolved metallo-organic material onto the substrate to form a layer; and heating the deposited layer in an oxygen environment to produce thermal decomposition of the organic component of the dissolved metallo-organic material and a reaction of the metallic portion of the material with oxygen thereby causing the layer to become dielectric.Type: GrantFiled: February 26, 2001Date of Patent: September 16, 2003Assignee: Eastman Kodak CompanyInventors: Thomas N. Blanton, Dilip K. Chatterjee, Donn B. Carlton
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Patent number: 6578245Abstract: A method of making a print head (100) includes forming a body (110) having a closed base (120) and independent fluid containment compartments (220) formed about the closed base (120). A substantially planar piezoelectric transducer (80) comprising a slab (60) of piezoelectric material provides a means of enclosing each of the independent fluid containment compartments (220). Each of the independent compartments has operably associated therewith one of a plurality of first electrodes (20) arranged on a first surface (62) of the slab (60) of piezoelectric material and a portion of a second electrode (22) arranged on an opposite second surface (64). By applying a voltage to the first and second surface electrodes (20, 22) in a predetermined manner induces an electric field in a portion of the slab (60) of piezoelectric material and thereby forces fluid composition through the independent fluid containment compartment (220).Type: GrantFiled: May 18, 2000Date of Patent: June 17, 2003Assignee: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Edward P. Furlani, Syamal K. Ghosh
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Patent number: 6572810Abstract: A method of making an injection molded article, including the steps of: mixing at a temperature of at least 100° C. polymeric materials having a thermal conductivity in the range of 0.001 to 0.01 cal/cm-sec-° C. wherein the polymeric materials are selected from the group consisting of polyethylene, polystyrene, polyester, and polycarbonate or combinations thereof, and one or more materials selected from the group consisting of ceramics, ceramic composites, metals and metal alloys in a blended relationship to form a viscous phase mixture, the materials in the viscous phase mixture being selected so that when in a solid phase it has a density greater than 4 grams/cc and a thermal conductivity greater than 0.101 cal/cm-sec-° C. to form a feedstock; cooling the blended viscous phase mixture to form the feedstock; and using the feedstock in an injection molding machine to form the article.Type: GrantFiled: January 29, 2001Date of Patent: June 3, 2003Assignee: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Syamal K. Ghosh, Donn B. Carlton, Joseph A. Manico
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Publication number: 20020192392Abstract: A method of making a charge containing element including the steps of depositing and patterning a dielectric material on a surface wherein the dielectric material includes a metallo-organic component and a liquid component; and decomposing by laser light the deposited dielectric material to substantially evaporate the liquid component to cause the metallic portion of the metallo-organic component to react with oxygen causing the dielectric material to have charge-holding properties.Type: ApplicationFiled: April 27, 2001Publication date: December 19, 2002Applicant: Eastman Kodak CompanyInventors: Thomas N. Blanton, Syamal K. Ghosh, Donn B. Carlton, Dilip K. Chatterjee
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Patent number: 6491239Abstract: The present invention is a process for the preparation of a solid particles of a compound. The process includes milling the compound in the presence of milling media composed of ceramic particles having an average size of 0.1 to 20 mm. The ceramic particles are composed of a tetragonal zirconia core and a continuous hard case shell comprising cubic zirconia, monoclinic zirconia, spinel or zircon.Type: GrantFiled: March 5, 2001Date of Patent: December 10, 2002Assignee: Eastman Kodak CompanyInventors: Thomas N. Blanton, Dilip K. Chatterjee, Debasis Majumdar
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Publication number: 20020171167Abstract: A method of making an injection molded article, including the steps of: mixing at a temperature of at least 100° C. polymeric materials having a thermal conductivity in the range of 0.001 to 0.01 cal/cm-sec-° C. wherein the polymeric materials are selected from the group consisting of polyethylene, polystyrene, polyester, and polycarbonate or combinations thereof, and one or more materials selected from the group consisting of ceramics, ceramic composites, metals and metal alloys in a blended relationship to form a viscous phase mixture, the materials in the viscous phase mixture being selected so that when in a solid phase it has a density greater than 4 grams/cc and a thermal conductivity greater than 0.101 cal/cm-sec-° C. to form a feedstock; cooling the blended viscous phase mixture to form the feedstock; and using the feedstock in an injection molding machine to form the article.Type: ApplicationFiled: January 29, 2001Publication date: November 21, 2002Applicant: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Syamal K. Ghosh, Donn B. Carlton, Joseph A. Manico
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Publication number: 20020160164Abstract: A charge containing element including a conductive layer; a dielectric layer formed on the conductive layer wherein the dielectric layer is formed by the thermal decomposition of an organic component of the dissolved metallo-organic material and a reaction of the metallic portion of the material with oxygen thereby causing the dielectric layer to have charge holding properties; and electrodes coupled to the element to permit the application or discharge of charge from the dielectric layer.Type: ApplicationFiled: February 26, 2001Publication date: October 31, 2002Applicant: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Thomas N. Blanton, Donn B. Carlton
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Publication number: 20020151439Abstract: A method of forming a dielectric layer on a substrate, including the steps of providing a metallo-organic material in a solvent, which dissolves such metallo-organic material; coating dissolved metallo-organic material onto the substrate to form a layer; and heating the deposited layer in an oxygen environment to produce thermal decomposition of the organic component of the dissolved metallo-organic material and a reaction of the metallic portion of the material with oxygen thereby causing the layer to become dielectric.Type: ApplicationFiled: February 26, 2001Publication date: October 17, 2002Applicant: Eastman Kodak CompanyInventors: Thomas N. Blanton, Dilip K. Chatterjee, Donn B. Carlton
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Publication number: 20020145222Abstract: A method of making an injection molded article having a marbled appearance, including the steps of: mixing at a temperature of at least 100 degrees ° C. polymeric materials having a thermal conductivity in the range of 0.001 to 0.01 cal/cm-sec-° C. wherein the polymeric materials are selected from the group consisting of polyethylene, polystyrene, polyester, and polycarbonate or combinations thereof, and one or more materials selected from the group consisting of ceramics, ceramic composites, metals and metal alloys in a blended relationship to form a viscous phase mixture, the materials in the viscous phase mixture being selected so that when in a solid phase it has a density greater than 4 grams/cc and a thermal conductivity greater than 0.101 cal/cm-sec-° C. to form a feedstock; cooling the blended viscous phase mixture to form the feedstock; and using the feedstock in an injection molding machine having a zero compression screw to form the article.Type: ApplicationFiled: January 26, 2001Publication date: October 10, 2002Applicant: Eastman Kodak CompanyInventors: Donn B. Carlton, Dilip K. Chatterjee, Syamal K. Ghosh
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Patent number: 6458498Abstract: A charge containing element including a conductive layer; a dielectric layer formed on the conductive layer wherein the dielectric layer is formed by the thermal decomposition of an organic component of the dissolved metallo-organic material and a reaction of the metallic portion of the material with oxygen thereby causing the dielectric layer to have charge holding properties; and electrodes coupled to the element to permit the application or discharge of charge from the dielectric layer.Type: GrantFiled: February 26, 2001Date of Patent: October 1, 2002Assignee: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Thomas N. Blanton, Donn B. Carlton
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Patent number: 6367132Abstract: A method of making a print head (100) includes forming a body (110) having a closed base (120) and independent fluid containment compartments (220) formed about the closed base (120). A substantially planar piezoelectric transducer (80) comprising a slab (60) of piezoelectric material provides a means of enclosing each of the independent fluid containment compartments (220). Each of the independent compartments has operably associated therewith one of a plurality of first electrodes (20) arranged on a first surface (62) of the slab (60) of piezoelectric material and a portion of a second electrode (22) arranged on an opposite second surface (64). By applying a voltage to the first and second surface electrodes (20, 22) in a predetermined manner induces an electric field in a portion of the slab (60) of piezoelectric material and thereby forces fluid composition through the independent fluid containment compartment (220).Type: GrantFiled: August 31, 1998Date of Patent: April 9, 2002Assignee: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Edward P. Furlani, Syamal K. Ghosh
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Patent number: 6361161Abstract: An image producing material which when deposited on a receiver produces an image comprised of nanoparticles selected to have an average diameter of less than 500 nm and arranged so as to be effective in two states, in a first state it aggregates and will not flow through an ink jet printer nozzle and in a second state when subject to a force is flowable so as to be deposited on the receiver, such nanoparticles being bound to each other by Van der Waals forces in the first state and after deposition on the reciever.Type: GrantFiled: March 1, 2000Date of Patent: March 26, 2002Assignee: Eastman Kodak CompanyInventors: George W. Anstadt, Dilip K. Chatterjee, Donn B. Carlton
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Patent number: 6351879Abstract: A method of making a printing apparatus configured for drawing fluid from a fluid reservoir and then ejecting droplets of fluid onto a receiver to form an image include the steps of providing an orifice manifold having a plurality of orifices each one of which in fluid communications with one of a plurality of piezoelectric pumps.Type: GrantFiled: August 31, 1998Date of Patent: March 5, 2002Assignee: Eastman Kodak CompanyInventors: Edward P. Furlani, Syamal K. Ghosh, Dilip K. Chatterjee
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Patent number: 6350014Abstract: Apparatus for printing an image using image forming materials having nanoparticles less than an average diameter of 500 nm. The apparatus defining a plurality of printing nozzles each of which prints a pixel on a receiver, the nanoparticles being effective in two states, in a first state it aggregates and will not flow through an ink jet printer nozzle and in a second state when subject to a force is flowable so as to be deposited on the receiver, such nanoparticles being bound to each other by Van der Waals forces in the first state and after deposition on the receiver. The apparatus includes a hopper for receiving the nanoparticles and defining a cavity into which the nanoparticles aggregate in the first state; and applies a force to the nanoparticles disposed in the hopper to cause them to be effective in the second state and deliver them to the nozzles where such nanoparticles flow and are deposited on the receiver.Type: GrantFiled: March 1, 2000Date of Patent: February 26, 2002Assignee: Eastman Kodak CompanyInventors: Donn B. Carlton, Dilip K. Chatterjee, George W. Anstadt
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Publication number: 20010038048Abstract: The present invention is a process for the preparation of a solid particles of a compound. The process includes milling the compound in the presence of milling media composed of ceramic particles having an average size of 0.1 to 20 mm. The ceramic particles are composed of a tetragonal zirconia core and a continuous hard case shell comprising cubic zirconia, monoclinic zirconia, spinel or zircon.Type: ApplicationFiled: March 5, 2001Publication date: November 8, 2001Inventors: Thomas N. Blanton, Dilip K. Chatterjee, Debasis Majumdar
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Patent number: 6309749Abstract: The present invention is milling media composed of ceramic particles having an average size of 0.1 to 20 mm. The ceramic particles contain a tetragonal zirconia core and a continuous shell on the core comprising cubic zirconia, monoclinic zirconia, spinel or zircon. The present invention is also a method of manufacturing the milling media which includes providing ceramic particles having an average size of 0.1 to 20 mm. The ceramic particles are tetragonal zirconia. The ceramic particles are coated with a clay material and sintered to form a shell of cubic zirconia, monoclinic zirconia, spinel or zircon over the tetragonal zirconia core.Type: GrantFiled: May 6, 1999Date of Patent: October 30, 2001Assignee: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Thomas N. Blanton, Debasis Majumdar
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Patent number: 6300050Abstract: A photosensitive material includes silver iodide produced by decomposing a solid electrolyte of the formula MA4g5 having an ionic conductivity of >0.001 ohm−1 cm−1 in an organic solvent, where M is a monovalent cation. The photosensitive material further includes a sensitizing agent selected from the group consisting of residual MAg4I5, MAg4I3, and mixtures of residual MAg4I5, and MAg4I3.Type: GrantFiled: April 11, 2000Date of Patent: October 9, 2001Assignee: Eastman Kodak CompanyInventors: Heidi E. Dankosh, Kathleen R. Gisser, Thomas N. Blanton, Dilip K. Chatterjee, Seshadri Jagannathan
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Patent number: 6290339Abstract: A method of directing fluid between a reservoir and a micro-orifice manifold includes the step of providing a piezoelectric actuating element operably associated with independent fluid containment chambers of said manifold. The piezoelectric actuating element is activated by applying a voltage to electrodes which produces fluid flow by changing its geometry inside the reservoir in response to an applied voltage.Type: GrantFiled: July 22, 1998Date of Patent: September 18, 2001Assignee: Eastman Kodak CompanyInventors: Edward P. Furlani, Syamal K. Ghosh, Dilip K. Chatterjee
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Publication number: 20010015000Abstract: A method of making a print head (100) includes forming a body (110) having a closed base (120) and independent fluid containment compartments (220) formed about the closed base (120). A substantially planar piezoelectric transducer (80) comprising a slab (60) of piezoelectric material provides a means of enclosing each of the independent fluid containment compartments (220). Each of the independent compartments has operably associated therewith one of a plurality of first electrodes (20) arranged on a first surface (62) of the slab (60) of piezoelectric material and a portion of a second electrode (22) arranged on an opposite second surface (64). By applying a voltage to the first and second surface electrodes (20, 22) in a predetermined manner induces an electric field in a portion of the slab (60) of piezoelectric material and thereby forces fluid composition through the independent fluid containment compartment (220).Type: ApplicationFiled: August 31, 1998Publication date: August 23, 2001Inventors: DILIP K. CHATTERJEE, EDWARD P. FURLANI, SYAMAL K. GHOSH