Patents by Inventor Clare Louise Foden
Clare Louise Foden 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: 8216874Abstract: An optical device comprising an anode, a cathode comprising barium, strontium or calcium, and a layer of organic semiconducting material between the anode and the cathode wherein a layer of hole transporting and electron blocking material is located between the anode and the layer of organic semiconducting material.Type: GrantFiled: April 30, 2009Date of Patent: July 10, 2012Assignee: Cambridge Display Technology LimitedInventors: Brian Tierney, Ilaria Grizzi, Clare Louise Foden, Nalinkumar L. Patel, Mark Leadbeater
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Publication number: 20120007068Abstract: An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV.Type: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Euan C. Smith, Matthew Roberts, William Young, Clare Louise Foden
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Patent number: 8049408Abstract: An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV.Type: GrantFiled: August 10, 2005Date of Patent: November 1, 2011Assignee: Cambridge Display Technology LimitedInventors: Euan C. Smith, Matthew Roberts, William Young, Clare Louise Foden
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Patent number: 7989255Abstract: A method of forming an optical device comprising the steps of: providing a substrate comprising a first electrode capable of injecting or accepting charge carriers of a first type; forming over the first electrode a first layer that is at least partially insoluble in a solvent by depositing a first semiconducting material that is free of cross-linkable vinyl or ethynyl groups and is, at the time of deposition, soluble in the solvent; forming a second layer in contact with the first layer and comprising a second semiconducting material by depositing a second semiconducting material from a solution in the solvent; and forming over the second layer a second electrode capable of injecting or accepting charge carriers of a second type wherein the first layer is rendered at least partially insoluble by one or more of heat, vacuum and ambient drying treatment following deposition of the first semiconducting material.Type: GrantFiled: May 12, 2009Date of Patent: August 2, 2011Assignees: Cambridge Display Technology Limited, General Electric CompanyInventors: Craig Edward Murphy, Salvatore Cina, Timothy Butler, Matthew Roberts, Nalinkumar Lallubhai Patel, Clare Louise Foden, Mark Levence Leadbeater, Daniel Alan Forsythe, Robert Sidney Archer, Nicholas de Brissac Baynes, Nathan Luke Phillips, Anil Raj Duggal, Jie Liu
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Patent number: 7953682Abstract: This invention generally relates to methods, apparatus and computer program code processing digital data using non-negative matrix factorisation.Type: GrantFiled: November 30, 2005Date of Patent: May 31, 2011Assignee: Cambridge Display Technology LimitedInventors: Euan Christopher Smith, Paul Richard Routley, Clare Louise Foden
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Publication number: 20090227052Abstract: A method of forming an optical device comprising the steps of: providing a substrate comprising a first electrode capable of injecting or accepting charge carriers of a first type; forming over the first electrode a first layer that is at least partially insoluble in a solvent by depositing a first semiconducting material that is free of cross-linkable vinyl or ethynyl groups and is, at the time of deposition, soluble in the solvent; forming a second layer in contact with the first layer and comprising a second semiconducting material by depositing a second semiconducting material from a solution in the solvent; and forming over the second layer a second electrode capable of injecting or accepting charge carriers of a second type wherein the first layer is rendered at least partially insoluble by one or more of heat, vacuum and ambient drying treatment following deposition of the first semiconducting material.Type: ApplicationFiled: May 12, 2009Publication date: September 10, 2009Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, GENERAL ELECTRIC COMPANYInventors: Craig Edward Murphy, Salvatore Cina, Timothy Butler, Matthew Roberts, Nalinkumar Lallubhai Patel, Clare Louise Foden, Mark Levence Leadbeater, Daniel Alan Forsythe, Robert Sidney Archer, Nicholas de Brissac Baynes, Nathan Luke Phillips, Anil Raj Duggal, Jie Liu
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Patent number: 7531377Abstract: A method of forming an optical device comprising the steps of: providing a substrate comprising a first electrode capable of injecting or accepting charge carriers of a first type; forming over the first electrode a first layer that is at least partially insoluble in a solvent by depositing a first semiconducting material that is free of cross-linkable vinyl or ethynyl groups and is, at the time of deposition, soluble in the solvent; forming a second layer in contact with the first layer and comprising a second semiconducting material by depositing a second semiconducting material from a solution in the solvent; and forming over the second layer a second electrode capable of injecting or accepting charge carriers of a second type wherein the first layer is rendered at least partially insoluble by one or more of heat, vacuum and ambient drying treatment following deposition of the first semiconducting material.Type: GrantFiled: September 3, 2003Date of Patent: May 12, 2009Assignee: Cambridge Display Technology LimitedInventors: Craig Edward Murphy, Salvatore Cina, Timothy Butler, Matthew Roberts, Nalinkumar Lallubhai Patel, Clare Louise Foden, Mark Levence Leadbeater, Daniel Alan Forsythe, Robert Sidney Archer, Nicholas de Brissac Baynes, Nathan Luke Phillips, Anil Raj Duggal, Jie Liu
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Patent number: 7460669Abstract: An encoding method, decoding method and a communication method using single photons where information is directly encoded into each photon. In one embodiment at least two out of the three parameters of phases, polarization, and energy are used to encode information. In another embodiment, three or more non-orthogonal states with respect to each parameter are used. A further embodiment is also described which uses selective grouping of the results in order to more clearly detect the presence of an eavesdropper. Apparatus capable of performing the methods are also provided.Type: GrantFiled: October 25, 2001Date of Patent: December 2, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Clare Louise Foden, Andrew James Shields, David Mark Whittaker
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Publication number: 20080291122Abstract: This invention generally relates to methods, apparatus and computer program code processing digital data using non-negative matrix factorisation.Type: ApplicationFiled: November 30, 2005Publication date: November 27, 2008Inventors: Euan Christopher Smith, Paul Richard Routley, Clare Louise Foden
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Publication number: 20080265751Abstract: An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV.Type: ApplicationFiled: August 10, 2005Publication date: October 30, 2008Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Euan C. Smith, Matthew Roberts, William Young, Clare Louise Foden
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Patent number: 6657222Abstract: A photon source, comprising a first semiconductor region having excess carriers with a first conductivity type, and a second semiconductor region having excess carriers with a second conductivity type, the first and second conductivity types being opposing conductivity types; means for creating a surface acoustic wave (SAW) travelling from the first semiconductor region to the second semiconductor region such that excess carriers from the first semiconductor region are carried by the wave to the second region and quantizing means for quantizing the carrier transport caused by the wave, such that the number of carriers introduced into the second semiconductor region can be controlled to the accuracy of a single carrier.Type: GrantFiled: September 14, 2000Date of Patent: December 2, 2003Assignee: Kabushiki Kaisha ToshibaInventors: Clare Louise Foden, Mark Levence Leadbeater, Valery Talyansky
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Publication number: 20020097874Abstract: An encoding method, decoding method and a communication method using single photons where information is directly encoded into each photon. In one embodiment at least two out of the three parameters of phases, polarisation, and energy are used to encode information. In another embodiment, thee or more non-orthogonal states with respect to each parameter are used. A further embodiment is also described which uses selective grouping of the results in order to more clearly detect the presence of an eavesdropper. Apparatus capable of performing the methods are also provided.Type: ApplicationFiled: October 25, 2001Publication date: July 25, 2002Applicant: Kabushiki Kaisha ToshibaInventors: Clare Louise Foden, Andrew James Shields, David Mark Whittaker