Patents by Inventor Charles H. Honeyman
Charles H. Honeyman 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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Publication number: 20090206499Abstract: A first electrophoretic medium comprises an electrically charged particle suspended in a suspending fluid, the particle having a polymeric shell having repeating units derived from at least one monomer the homopolymer of which is incompatible with the suspending fluid. A second, similar electrophoretic medium comprises a suspending fluid, and first and second types of electrically charged particle suspended in the suspending fluid, the two types of particle having differing optical characteristics but both having polymeric shells. The polymeric shells are arranged such that homoaggregation of the two types of particles is thermodynamically favored over heteroaggregation.Type: ApplicationFiled: May 1, 2009Publication date: August 20, 2009Applicant: E Ink CorporationInventors: Thomas H. Whitesides, Qingye Zhou, Robert W. Zehner, Karl R. Amundson, Suzanne Balko, Alberto Goenaga, Peter J. Valianatos, Charles H. Honeyman, Elizabeth M. Gates, Matthew A. King, Russell J. Wilcox
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Publication number: 20080165122Abstract: A backplane for an electro-optic display comprises a pixel electrode (104), a voltage supply line (C) arranged to supply a voltage to the pixel electrode (104), and a micromechanical switch (106, 112) disposed between the voltage supply line (C) and the pixel electrode (104), the micromechanical switch (106, 112) having an open state, in which the voltage supply line (C) is not electrically connected to the pixel electrode (104), and a closed state, in which the voltage supply line (C) is electrically connected to the pixel electrode (104).Type: ApplicationFiled: March 12, 2008Publication date: July 10, 2008Applicant: E Ink CorporationInventors: Gregg M. Duthaler, Robert W. Zehner, Charles H. Honeyman, Kevin L. Denis, Matthew A. King, Jianna Wang
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Patent number: 7365733Abstract: A backplane for an electro-optic display comprises a pixel electrode (104), a voltage supply line (C) arranged to supply a voltage to the pixel electrode (104), and a micromechanical switch (106, 112) disposed between the voltage supply line (C) and the pixel electrode (104), the micromechanical switch (106, 112) having an open state, in which the voltage supply line (C) is not electrically connected to the pixel electrode (104), and a closed state, in which the voltage supply line (C) is electrically connected to the pixel electrode (104).Type: GrantFiled: December 16, 2003Date of Patent: April 29, 2008Assignee: E Ink CorporationInventors: Gregg M. Duthaler, Robert W. Zehner, Charles H. Honeyman, Kevin L. Denis, Matthew A. King, Jianna Wang
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Patent number: 7339715Abstract: A coating of an encapsulated electrophoretic medium is formed on a substrate (106) by dispersing in a fluid (104) a plurality of electrophoretic capsules (102), contacting at least a portion of a substrate (106) with the fluid (104); and applying a potential difference between at least a part of the portion of the substrate (106) contacting the fluid (104) and a counter-electrode (110) in electrical contact with the fluid (104), thereby causing capsules (102) to be deposited upon at least part of the portion of the substrate (106) contacting the fluid (102). Patterned coatings of capsules containing different colors may be deposited in registration with electrodes using multiple capsule deposition steps. Alternatively, a patterned coating may be deposited upon a substrate containing a conductive layer by varying the conductivity of the conductive layer by radiation exposure or by coating portions of the conductive layer with an insulating layer, typically a photoresist.Type: GrantFiled: March 24, 2004Date of Patent: March 4, 2008Assignee: E Ink CorporationInventors: Richard M. Webber, Thomas H. Whitesides, Guy M. Danner, Craig A. Herb, Charles H. Honeyman, Michael McCreary
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Patent number: 7304787Abstract: An electrophoretic display comprises an electrophoretic medium having a plurality of charged particles suspended in a suspending fluid, and two electrodes disposed on opposed sides of the electrophoretic medium. At least one of the electrodes is light-transmissive and forming a viewing surface. The display has a closed optical state in which the charged particles are spread over substantially the entire viewing surface so that light cannot pass through the medium, and an open optical state in which the electrophoretic particles form chains extending between the electrodes so that light can pass through the electrophoretic medium. Insulating layers are disposed between the electrodes and the electrophoretic medium. Similarly electrophoretic displays are provided equipped with color filter arrays or reflectors.Type: GrantFiled: July 27, 2006Date of Patent: December 4, 2007Assignee: E Ink CorporationInventors: Thomas H. Whitesides, Michael D. McCreary, Richard J. Paolini, Jr., Charles H. Honeyman
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Patent number: 7247379Abstract: Copper chromite particles can advantageously be used as black particles in electrophoretic media and displays. Preferably, the copper chromite particles are coated with a silica coating and a polymer coating.Type: GrantFiled: September 6, 2005Date of Patent: July 24, 2007Assignee: E Ink CorporationInventors: Anthony Edward Pullen, Thomas H. Whitesides, Charles H. Honeyman, Barrett Comiskey, Jonathan D. Albert
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Patent number: 7236290Abstract: An electrophoretic medium comprises a liquid and at least one particle disposed within the liquid and capable of moving therethrough on application of an electric field to the medium. The medium further comprises a free radical scavenger selected from the group consisting of (a) stable free radicals; and (b) polymeric free radical scavengers comprising a plurality of free radical scavenging groups attached to a polymeric chain. The medium is desirably encapsulated.Type: GrantFiled: July 25, 2000Date of Patent: June 26, 2007Assignee: E Ink CorporationInventors: Libing Zhang, Charles H. Honeyman
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Patent number: 7173752Abstract: A first electro-optic display comprises first and second substrates, and an adhesive layer and a layer of electro-optic material disposed between the first and second substrates, the adhesive layer comprising a mixture of a polymeric adhesive material and a hydroxyl containing polymer having a number average molecular weight not greater than about 5000. A second electro-optic display is similar to the first but has an adhesive layer comprising a thermally-activated cross-linking agent to reduce void growth when the display is subjected to temperature changes.Type: GrantFiled: November 5, 2004Date of Patent: February 6, 2007Assignee: E Ink CorporationInventors: Harit Doshi, Charles H. Honeyman, Seungman Sohn, Simon Pang, Lan Cao, Bin Wu, David D. Miller, Gregg M. Duthaler, James P. Araujo
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Patent number: 7061663Abstract: An encapsulation material, intended for use in encapsulated electrophoretic displays, comprises the coacervation product of a polyanionic polymer having a vinyl main chain and a plurality of anionic groups bonded to the main chain, with a cationic or zwitterionic water-soluble polymer capable of forming an immiscible second phase on contact with the polyanionic polymer.Type: GrantFiled: September 12, 2005Date of Patent: June 13, 2006Assignee: E Ink CorporationInventors: Lan Cao, Libing Zhang, Charles H. Honeyman, Kimberly L. Houde, Andrew L. Loxley, David D. Miller, Richard J. Paolini, Jr., Tibyron Quinn, Michael L. Steiner, Thomas H. Whitesides
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Patent number: 7012735Abstract: An electro-optic display comprises first and second substrates, and an adhesive layer and a layer of electro-optic material disposed between these substrates, the adhesive layer comprising a mixture of a polymeric adhesive material and an additive selected from a salt, a polyelectrolyte, a polymer electrolyte, a solid electrolyte, a conductive metal powder, a ferrofluid, a non-reactive solvent, a conductive organic compound, and combinations thereof. The additive enables the volume resistivity of the adhesive layer to be controlled. Also, in an encapsulated electrophoretic medium comprising capsules in a polymeric binder, the volume resistivity of the binder can be controlled in a similar manner.Type: GrantFiled: March 26, 2004Date of Patent: March 14, 2006Assignee: E Ink CorporaitonInventors: Charles H. Honeyman, Eva Chen, Eric Howard Klingenberg, Shafiq N. Fazel
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Patent number: 7002728Abstract: Copper chromite particles can advantageously be used as black particles in electrophoretic media and displays. Preferably, the copper chromite particles are coated with a silica coating and a polymer coating.Type: GrantFiled: February 9, 2004Date of Patent: February 21, 2006Assignee: E Ink CorporationInventors: Anthony Edward Pullen, Thomas H. Whitesides, Charles H. Honeyman, Barrett Comiskey, Jonathan D. Albert
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Patent number: 6950220Abstract: The invention relates to electro-optic displays and methods for driving such displays. The invention provides (i) electrochromic displays with solid charge transport layers; (ii) apparatus and methods for improving the contrast and reducing the cost of electrochromic displays; (iii) apparatus and methods for sealing electrochromic displays from the outside environment and preventing ingress of contaminants into such a display; and (iv) methods for adjusting the driving of electro-optic displays to allow for environmental and operating parameters.Type: GrantFiled: March 18, 2003Date of Patent: September 27, 2005Assignee: E Ink CorporationInventors: Justin Abramson, Karl R. Amundson, Guy M. Danner, Gregg M. Duthaler, Holly G. Gates, Charles H. Honeyman, Ara N. Knaian, Ian D. Morrison, Steven J. O'Neil, Richard J. Paolini, Jr., Anthony Edward Pullen, Jianna Wang, Jonathan L. Zalesky, Robert W. Zehner, John Edward Cronin
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Patent number: 6822782Abstract: In electrophoretic media, it is advantageous to use pigment particles having about 1 to 15 percent by weight of a polymer chemically bonded to, or cross-linked around, the pigment particles. The polymer desirably has a branched chain structure with side chains extending from a main chain. Charged or chargeable groups can be incorporated into the polymer or can be bonded to the particles separately from the polymer. The polymer-coated particles can be prepared by first attaching a polymerizable or polymerization-initiating group to the particle and then reacting the particle with one or more polymerizable monomers or oligomers.Type: GrantFiled: May 15, 2002Date of Patent: November 23, 2004Assignee: E Ink CorporationInventors: Charles H. Honeyman, Elizabeth A. Moran, Libing Zhang, Anthony Edward Pullen, Emily J. Pratt, Kimberly L. Houde, Matthew A. King, Craig A. Herb, Richard J. Paolini, Jr.
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Publication number: 20040226820Abstract: A coating of an encapsulated electrophoretic medium is formed on a substrate (106) by dispersing in a fluid (104) a plurality of electrophoretic capsules (102), contacting at least a portion of a substrate (106) with the fluid (104); and applying a potential difference between at least a part of the portion of the substrate (106) contacting the fluid (104) and a counter-electrode (110) in electrical contact with the fluid (104), thereby causing capsules (102) to be deposited upon at least part of the portion of the substrate (106) contacting the fluid (102). Patterned coatings of capsules containing different colors may be deposited in registration with electrodes using multiple capsule deposition steps. Alternatively, a patterned coating may be deposited upon a substrate containing a conductive layer by varying the conductivity of the conductive layer by radiation exposure or by coating portions of the conductive layer with an insulating layer, typically a photoresist.Type: ApplicationFiled: March 24, 2004Publication date: November 18, 2004Applicant: E Ink CorporationInventors: Richard M. Webber, Thomas H. Whitesides, Guy M. Danner, Craig A. Herb, Charles H. Honeyman, Michael McCreary
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Publication number: 20040196215Abstract: A backplane for an electro-optic display comprises a pixel electrode (104), a voltage supply line (C) arranged to supply a voltage to the pixel electrode (104), and a micromechanical switch (106, 112) disposed between the voltage supply line (C) and the pixel electrode (104), the micromechanical switch (106, 112) having an open state, in which the voltage supply line (C) is not electrically connected to the pixel electrode (104), and a closed state, in which the voltage supply line (C) is electrically connected to the pixel electrode (104).Type: ApplicationFiled: December 16, 2003Publication date: October 7, 2004Applicant: E INK CORPORATIONInventors: Gregg M. Duthaler, Robert W. Zehner, Charles H. Honeyman, Kevin L. Denis, Matthew A. King, Jianna Wang
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Publication number: 20030214695Abstract: The invention relates to electro-optic displays and methods for driving such displays. The invention provides (i) electrochromic displays with solid charge transport layers; (ii) apparatus and methods for improving the contrast and reducing the cost of electrochromic displays; (iii) apparatus and methods for sealing electrochromic displays from the outside environment and preventing ingress of contaminants into such a display; and (iv) methods for adjusting the driving of electro-optic displays to allow for environmental and operating parameters.Type: ApplicationFiled: March 18, 2003Publication date: November 20, 2003Applicant: E INK CORPORATIONInventors: Justin Abramson, Karl R. Amundson, Guy M. Danner, Gregg M. Duthaler, Holly G. Gates, Charles H. Honeyman, Ara N. Knaian, Ian D. Morrison, Steven J. O'Neil, Richard J. Paolini, Anthony E. Pullen, Jianna Wang, Jonathan L. Zalesky, Robert W. Zehner, John Edward Cronin
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Publication number: 20020185378Abstract: In electrophoretic media, it is advantageous to use pigment particles having about 1 to 15 percent by weight of a polymer chemically bonded to, or cross-linked around, the pigment particles. The polymer desirably has a branched chain structure with side chains extending from a main chain. Charged or chargeable groups can be incorporated into the polymer or can be bonded to the particles separately from the polymer. The polymer-coated particles can be prepared by first attaching a polymerizable or polymerization-initiating group to the particle and then reacting the particle with one or more polymerizable monomers or oligomers.Type: ApplicationFiled: May 15, 2002Publication date: December 12, 2002Inventors: Charles H. Honeyman, Elizabeth A. Moran, Libing Zhang, Anthony Edward Pullen, Emily J. Pratt, Kimberly L. Houde, Matthew A. King, Craig A. Herb, Richard J. Paolini
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Patent number: 6479571Abstract: Elastomeric compositions contain at least one elastomer and a polymer coated modified carbon product wherein the polymer at least partially coats the modified carbon product. The modified product preferably has at least one organic group attached to the carbon product and the organic group is preferably substituted with an ionic, ionizable, or polar group for preparation in polar or aqueous based media. Methods of making the polymer coated modified carbon product are also described, such as by aqueous-based or solvent free polymerization methods, organic solvent based polymerization methods, or solution coating methods. Polymeric products and masterbatches containing the polymer coated modified carbon products are also described as well as methods to improve properties such as impact properties and tensile properties.Type: GrantFiled: April 3, 2000Date of Patent: November 12, 2002Assignee: Cabot CorporationInventors: Joel M. Cooke, Charles H. Honeyman, Robert M. Amici, Peter A. Lovell, John L. Stanford, Rosa Casado Portilla
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Patent number: 6458458Abstract: A polymer coated modified carbon product is described wherein the polymer at least partially coats a modified carbon product. The modified product preferably has at least one organic group attached to the carbon product and the organic group is preferably substituted with an ionic, ionizable, or polar group for preparation in polar or aqueous based media. Methods of making the polymer coated modified carbon product are also described, such as by aqueous-based or solvent free polymerization methods, organic solvent based polymerization methods, or solution coating methods. Polymeric products and masterbatches containing the polymer coated modified carbon products are also described as well as methods to improve properties such as impact properties and tensile properties. Polymer coated modified colored pigments, methods of making the same, and polymeric products and masterbatches containing polymer coated modified colored pigments are also described.Type: GrantFiled: May 24, 1999Date of Patent: October 1, 2002Assignee: Cabot CorporationInventors: Joel M. Cooke, Charles H. Honeyman, Robert M. Amici, Peter A. Lovell, John L. Stanford, Rosa Casado Portilla
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Patent number: 6051353Abstract: A carrier comprised of a core and thereover a polymer generated from the reaction of a component containing amine groups and a component containing epoxy groups.Type: GrantFiled: September 7, 1999Date of Patent: April 18, 2000Assignee: Xerox CorporationInventors: Thomas R. Hoffend, Robert D. Bayley, Carol A. Fox, John G. VanDusen, Scott M. Silence, K. Derek Henderson, Charles H. Honeyman, Paula J. MacLeod, Paul F. Smith, Thomas E. Enright