Patents by Inventor Suresh Sunderrajan
Suresh Sunderrajan 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: 10066164Abstract: The present invention relates to the use of light-converting, colloidal, doped semiconductor nanocrystals to provide a new generation of high performance, low cost monochromatic and white light sources based on LEDs.Type: GrantFiled: June 30, 2010Date of Patent: September 4, 2018Inventors: Tiecheng Qiao, David Battaglia, Suresh Sunderrajan, Qiang Zhang, Haoguo Zhu
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Patent number: 9580647Abstract: The present invention relates to low reabsorbing semiconductor nanocrystals having, simultaneously, an emission center core surrounded by at least one absorbing shell capable of absorbing blue or purple light and a protective exterior shell. The emission center core is capable of emitting at least one different wavelength range of light. The low reabsorbing semiconductor nanocrystals demonstrate an absorbance ratio greater than or equal to 10. These low reabsorbing semiconductor nanocrystals can be used in optical applications, some of which can include, for example, light-emitting diodes, solid-state-lighting, solar cells, lasers, and biomedical tags.Type: GrantFiled: June 30, 2010Date of Patent: February 28, 2017Assignee: Najing Technology Corporation LimitedInventors: David Battaglia, Haogua Zhu, Qiang Zhang, Suresh Sunderrajan, Tiecheng Qiao
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Publication number: 20130134366Abstract: The present invention relates to semiconductor nanocrystals having, simultaneously, an emission center surrounded by at least one absorbing shell and a protective exterior shell.Type: ApplicationFiled: June 30, 2010Publication date: May 30, 2013Inventors: David Battaglia, Haogua Zhu, Qiang Zhang, Suresh Sunderrajan, Tiecheng Qiao
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Publication number: 20120175588Abstract: The present invention relates to the use of light-converting, colloidal, doped semiconductor nanocrystals to provide a new generation of high performance, low cost monochromatic and white light sources based on LEDs.Type: ApplicationFiled: June 30, 2010Publication date: July 12, 2012Inventors: Tiecheng Qiao, David Battaglia, Suresh Sunderrajan, Qiang Zhang, Haoguo Zhu
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Patent number: 7879743Abstract: Disclosed in this specification is an aqueous dispersion for treating a textile. The dispersion generally includes surface-functionalized inorganic oxides in combination with a fluorochemical. Significantly lower concentrations of fluorochemicals are present in comparison to prior art dispersions.Type: GrantFiled: September 21, 2007Date of Patent: February 1, 2011Assignee: BigSky Technologies LLCInventors: Joseph F. Bringley, Tiecheng Qiao, Suresh Sunderrajan
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Publication number: 20100009583Abstract: Disclosed are embodiments and methods relating to the treatment of textile, such as a textile substrate, with an aqueous dispersion of surface-functionalized particles and a fluorochemical, or a textile substrate treated with an aqueous dispersion of surface-functionalized particles, a fluorochemical, and a flame retardant chemical. Textiles treated in accordance with the disclosed embodiments (e.g., fluorine concentration of from 20 to 900 ppm) demonstrate an average burn rate less than about 4.0 inch/minute, and an average weight loss is less than about 40% of the original weight. During burning of the treated textile, flaming drips extinguish (on average) in less than about 2 seconds, or does not increase the peak heat release rate by more than about 70%, and the mass loss rate by more than about 50%.Type: ApplicationFiled: July 16, 2009Publication date: January 14, 2010Applicant: BigSky Technologies LLCInventors: Joseph F. Bringley, Tiecheng Qiao, Suresh Sunderrajan
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Publication number: 20090081440Abstract: Disclosed in this specification is an aqueous dispersion for treating a textile. The dispersion generally includes surface-functionalized inorganic oxides in combination with a fluorochemical. Significantly lower concentrations of fluorochemicals are present in comparison to prior art dispersions.Type: ApplicationFiled: September 21, 2007Publication date: March 26, 2009Inventors: Joseph F. Bringley, Tiecheng Qiao, Suresh Sunderrajan
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Patent number: 7413286Abstract: A method and apparatus for delivering solvent free marking material to a receiver is provided. A printhead includes a discharge device having an inlet and an outlet with a portion of the discharge device defining a delivery path. An actuating mechanism is moveably positioned along the delivery path. A material selection device has an inlet and an outlet with the outlet of the material selection device being connected in fluid communication to the inlet of the discharge device. The inlet of the material selection device is adapted to be connected to a pressurized source of a thermodynamically stable mixture of a fluid and a marking material, wherein the fluid is in a gaseous state at a location beyond the outlet of the discharge device.Type: GrantFiled: September 8, 2005Date of Patent: August 19, 2008Assignee: Eastman Kodak CompanyInventors: Sridhar Sadasivan, Seshadri Jagannathan, Suresh Sunderrajan, Gary E. Merz, John E. Rueping, Glen C. Irvin, Jr., Ramesh Jagannathan, Rajesh V. Mehta, David J. Nelson
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Patent number: 7276184Abstract: A process for the preparation of nanoscale particulate material is described comprising: (i) combining one or more functional material to be precipitated as nanoscale particles and one or more surface active material in a compressed CO2 phase with a density of at least 0.1 g/cc, where the functional material is substantially insoluble in the compressed CO2 in the absence of the surfactant, the surfactant comprises a compressed CO2-philic portion and a functional material-philic portion, and the compressed CO2 phase, functional material and surfactant interact to form an aggregated system having a continuous compressed CO2 phase and a plurality of aggregates comprising surfactant and functional material molecules of average diameter less than 10 nanometers dispersed therein; and (ii) rapidly depressurizing the compressed CO2 phase thereby precipitating the dispersed functional and surfactant materials in the form of composite particles of average diameter from 0.5 to less than 10 nanometers.Type: GrantFiled: July 11, 2002Date of Patent: October 2, 2007Assignee: Eastman Kodak CompanyInventors: Glen C. Irvin, Ramesh Jagannathan, Seshadri Jagannathan, Suresh Sunderrajan, David D. Tuschel, William C. Lenhart, David J. Nelson
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Patent number: 7179523Abstract: The invention relates to an imaging member comprising an imaging layer and a base wherein said base comprises a closed cell foam core sheet and adhered thereto an upper and lower flange sheet, wherein said foam core sheet has a modulus of between 100 and 2758 MPa and a tensile toughness between 0.344 and 35 MPa, and wherein said upper and lower flange sheet has a modulus of between and 1380 and 20000 MPa and a toughness between 1.4 and 210 MPa.Type: GrantFiled: December 28, 2001Date of Patent: February 20, 2007Assignee: Eastman Kodak CompanyInventors: Yeh-Hung Lai, Suresh Sunderrajan, Thaddeus S. Gula, William A. Mruk, Narasimharao Dontula, Gary D. Smith, YuanQiao Rao
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Patent number: 7143674Abstract: The invention relates to an imaging member comprising an imaging layer and a base wherein said base comprises a closed cell foam core sheet and adhered thereto an upper and lower flange sheet, wherein said foam core sheet has a modulus of between 100 and 2758 MPa and a tensile toughness between 0.344 and 35 MPa, and wherein said upper and lower flange sheet has a modulus of between and 1380 and 20000 MPa and a toughness between 1.4 and 210 MPa.Type: GrantFiled: September 30, 2002Date of Patent: December 5, 2006Assignee: Eastman Kodak CompanyInventors: Yeh-Hung Lai, Suresh Sunderrajan, Thaddeus S. Gula, William A. Mruk, Narasimharao Dontula, Gary D. Smith, YuanQiao Rao
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Publication number: 20060240244Abstract: A method of forming a sheet comprising extruding a polymer material comprising an incompatible material and a foaming agent, cooling the extruded material, stretching said extruded material in at least one direction.Type: ApplicationFiled: June 27, 2006Publication date: October 26, 2006Inventors: Suresh Sunderrajan, Narasimharao Dontula, Thaddeus Gula, William Mruk, Sandra Dagan, Peter Aylward, Richard Bomba, Terry Heath, Edward Colombo
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Patent number: 7094460Abstract: The present invention relates to an imaging member comprising an imaging layer and a base wherein said base comprises a polymer sheet having at least one oriented polymer core and adhered thereto at least one unoriented polymer layer. Another embodiment relates to an imaging element comprising an imaging layer and a base, wherein said base comprises an integral polymer sheet having at least one oriented polymer core and at least one unoriented polymer layer. The invention further relates to a process of manufacturing a base for an imaging element comprising the steps of extruding a voided core polymer sheet; orienting said extruded voided core polymer sheet; and extrusion coating said oriented extruded voided core polymer sheet with at least one unoriented polymer layer.Type: GrantFiled: May 24, 2002Date of Patent: August 22, 2006Assignee: Eastman Kodak CompanyInventors: Peter T. Aylward, Sandra J. Dagan, Suresh Sunderrajan
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Publication number: 20060023027Abstract: A method and apparatus for delivering solvent free marking material to a receiver is provided. A printhead includes a discharge device having an inlet and an outlet with a portion of the discharge device defining a delivery path. An actuating mechanism is moveably positioned along the delivery path. A material selection device has an inlet and an outlet with the outlet of the material selection device being connected in fluid communication to the inlet of the discharge device. The inlet of the material selection device is adapted to be connected to a pressurized source of a thermodynamically stable mixture of a fluid and a marking material, wherein the fluid is in a gaseous state at a location beyond the outlet of the discharge device.Type: ApplicationFiled: September 8, 2005Publication date: February 2, 2006Inventors: Sridhar Sadasivan, Seshadri Jagannathan, Suresh Sunderrajan, Gary Merz, John Rueping, Glen Irvin, Ramesh Jagannathan, Rajesh Mehta, David Nelson
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Publication number: 20060013945Abstract: A method and an apparatus for making a light emitting display is provided. The apparatus includes a discharge device with an inlet and an outlet with the portion of the discharge device defining a delivery path. An actuating mechanism is moveably positioned along the delivery path. A substrate retaining device is positioned spaced apart from the outlet of the discharge device in the delivery path. The inlet of the discharge device is adapted to be connected to a pressurized source of a thermodynamically stable mixture of a compressed fluid and one of a hole transporting material, a light emitting material, and an electron transporting material. The compressed fluid is in a gaseous state at a location beyond the outlet of the discharge device and prior to the substrate retaining device.Type: ApplicationFiled: July 12, 2005Publication date: January 19, 2006Inventors: Sridhar Sadasivan, Ramesh Jagannathan, Seshadri Jagannathan, Suresh Sunderrajan, David nelson, Glen Irvin, Rajesh Mehta
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Patent number: 6971739Abstract: A method and apparatus for delivering solvent free marking material to a receiver is provided. A printhead includes a discharge device having an inlet and an outlet with a portion of the discharge device defining a delivery path. An actuating mechanism is moveably positioned along the delivery path. A material selection device has an inlet and an outlet with the outlet of the material selection device being connected in fluid communication to the inlet of the discharge device. The inlet of the material selection device is adapted to be connected to a pressurized source of a thermodynamically stable mixture of a fluid and a marking material, wherein the fluid is in a gaseous state at a location beyond the outlet of the discharge device.Type: GrantFiled: June 5, 2002Date of Patent: December 6, 2005Assignee: Eastman Kodak CompanyInventors: Sridhar Sadasivan, Seshadri Jagannathan, Suresh Sunderrajan, Gary E. Merz, John E. Rueping, Glen C. Irvin, Jr., Ramesh Jagannathan, Rajesh V. Mehta, David J. Nelson
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Patent number: 6866371Abstract: A method and apparatus for printing and coating includes providing a pressurized source of a thermodynamically stable mixture of a solvent and a marking material. A printhead is connected to the pressurized source. The printhead is configured to produce a first shaped beam of the marking material and a second shaped beam of the marking material. The marking material can be different marking materials or the same marking material.Type: GrantFiled: January 17, 2002Date of Patent: March 15, 2005Assignee: Eastman Kodak CompanyInventors: Sridhar Sadasivan, David J. Nelson, Seshadri Jagannathan, Ramesh Jagannathan, Suresh Sunderrajan, Glen C. Irvin, Jr., Gary E. Merz, John E. Rueping
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Patent number: 6843556Abstract: A system (10) produces patterned deposition on a substrate (14) from compressed fluids. A delivery system (12) cooperates with an independently controlled first chamber and an independently controlled second chamber retaining a substrate (14) for receiving precipitated functional material along a fluid flow delivery (13) from the delivery system (12). A shadow mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).Type: GrantFiled: December 6, 2002Date of Patent: January 18, 2005Assignee: Eastman Kodak CompanyInventors: David J. Nelson, Suresh Sunderrajan, Ramesh Jagannathan, Seshadri Jagannathan, Glen C. Irvin, Jr., Sridhar Sadasivan, Rajesh V. Mehta, John E. Rueping
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Patent number: 6818367Abstract: The invention relates to an imaging element comprising an imaging layer and a support, wherein the support comprises a base material having thereon at least two polyolefin layers, wherein the uppermost layer of the at least two polyolefin layers comprises a mixture of optical brighteners comprising a Compound A having the following formula: a Compound B having the following formula: and a Compound C having the following formula: wherein the layers below the uppermost layer of the at least two polyolefin layers comprise migratory optical brightener; and wherein the imaging layer is on the same side of the base material as the at least two polyolefin layers. The inventive support unexpectedly minimizes exudation of the brightener at the polyolefin surface and provides excellent absorption/emission characteristics, brightening power and heat to meet the critical requirements of the photographic field.Type: GrantFiled: April 15, 2003Date of Patent: November 16, 2004Assignee: Eastman Kodak CompanyInventors: Elizabeth K. Priebe, William A. Mruk, James C. Pirchner, Suresh Sunderrajan
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Publication number: 20040209180Abstract: The invention relates to an imaging element comprising an imaging layer and a support, wherein the support comprises a base material having thereon at least two polyolefin layers, wherein the uppermost layer of the at least two polyolefin layers comprises a mixture of optical brighteners comprising a Compound A having the following formula: 1Type: ApplicationFiled: April 15, 2003Publication date: October 21, 2004Inventors: Elizabeth K. Priebe, William A. Mruk, James C. Pirchner, Suresh Sunderrajan