Patents by Inventor Craig A. Herb
Craig A. Herb 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: 7038655Abstract: An electrophoretic display has a viewing surface, and includes an image pixel. The image pixel includes a first plurality of particles having a first mobility, and a second plurality of particles having a second mobility. At a first addressing voltage, the first mobility is greater than the second mobility. At a second addressing voltage, the second mobility is greater than the first mobility. At least one of the first and second mobilities is a variable function of voltage, i.e., a function of an applied electric field. Application of the first addressing voltage produces a first optical state, which is determined by a motion of the first plurality of particles. Application of the second addressing voltage produces a second optical state determined by a motion of the second plurality of particles.Type: GrantFiled: November 18, 2002Date of Patent: May 2, 2006Assignee: E Ink CorporationInventors: Craig A. Herb, Libing Zhang
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Patent number: 6987603Abstract: An electrophoretic display (100) comprises a front light-transmissive substrate (112), a rear substrate (116) spaced from the front substrate (112) so as to leave a cavity, and an electrophoretic medium (102) in the cavity, the electrophoretic medium (102) comprising a liquid external phase (120) and a plurality of capsules (104) suspended in the liquid external phase (120), each of the capsules comprising a capsule wall, a suspending fluid (106) held within the capsule wall and at least one electrically charged particle (108, 110) suspended in the suspending fluid (106).Type: GrantFiled: January 30, 2004Date of Patent: January 17, 2006Assignee: E Ink CorporationInventors: Richard J. Paolini, Jr., Robert W. Zehner, Karl R. Amundson, Craig A. Herb, Alexi C. Arango, Andrew L. Loxley
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Patent number: 6900851Abstract: The invention features a photoconductively addressed display and a method of photoconductive addressing in a display. The method includes providing an electro-optic imaging layer that extends in an X direction and a Y direction and comprises an array of image elements. A column electrode layer is provided adjacent to one side of the electro-optic imaging layer. The column electrode layer includes a plurality of column electrodes that each extend in the Y direction and are spaced from one another in the X direction. A photoconductive layer disposed between the electro-optic imaging layer and the column electrode layer is provided. An elongate portion of the photoconductive layer is illuminated in the X direction while scanning the illumination in the Y direction to translate a location of the illuminated elongate portion.Type: GrantFiled: February 8, 2002Date of Patent: May 31, 2005Assignee: E Ink CorporationInventors: Ian D. Morrison, Rachael A. Forgit, Peter J. Valianatos, Craig A. Herb, Guy M. Danner
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Publication number: 20050018273Abstract: In electrophoretic media, it is advantageous to use pigment particles having about 1 to 15 per cent 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: September 7, 2004Publication date: January 27, 2005Applicant: E INK CORPORATIONInventors: Charles Honeyman, Elizabeth Moran, Libing Zhang, Anthony Pullen, Emily Pratt, Kimberly Houde, Matthew King, Craig Herb, Richard Paolini
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Publication number: 20040257635Abstract: An electrophoretic display (100) comprises a front light-transmissive substrate (112), a rear substrate (116) spaced from the front substrate (112) so as to leave a cavity, and an electrophoretic medium (102) in the cavity, the electrophoretic medium (102) comprising a liquid external phase (120) and a plurality of capsules (104) suspended in the liquid external phase (120), each of the capsules comprising a capsule wall, a suspending fluid (106) held within the capsule wall and at least one electrically charged particle (108, 110) suspended in the suspending fluid (106).Type: ApplicationFiled: January 30, 2004Publication date: December 23, 2004Applicant: E INK CORPORATIONInventors: Richard J. Paolini, Robert W. Zehner, Karl R. Amundson, Craig A. Herb, Alexi C. Arango, Andrew L. Loxley
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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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Patent number: 6693620Abstract: Methods and apparatus for an electrophoretic display in which the particle motion is a controlled, non-linear function of the applied electric field. Threshold addressing allows simple, inexpensive passive addressing techniques to be employed. The inverse electrorheological gating techniques allow the construction of a full color, passively addressed display without the need to address individual capsules. A mixture of capsules is coated randomly onto a substrate enabling the creation of inexpensive displays. All the techniques allow a significant threshold to be realized. Rapid movement of the pigment particles above the threshold allows rapid switching times for the display. Since diffusion and gravity are extremely weak forces compared to the yield stresses created, the structured or gelled medium approach provides a great improvement in the bistability of the displays.Type: GrantFiled: May 3, 2000Date of Patent: February 17, 2004Assignee: E Ink CorporationInventors: Craig A. Herb, Ian D. Morrison, Andrew L. Loxley
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Publication number: 20030151702Abstract: The invention features a photoconductively addressed display and a method of photoconductive addressing in a display. The method includes providing an electro-optic imaging layer that extends in an X direction and a Y direction and comprises an array of image elements. A column electrode layer is provided adjacent to one side of the electro-optic imaging layer. The column electrode layer includes a plurality of column electrodes that each extend in the Y direction and are spaced from one another in the X direction. A photoconductive layer disposed between the electro-optic imaging layer and the column electrode layer is provided. An elongate portion of the photoconductive layer is illuminated in the X direction while scanning the illumination in the Y direction to translate a location of the illuminated elongate portion.Type: ApplicationFiled: February 8, 2002Publication date: August 14, 2003Inventors: Ian D. Morrison, Rachael A. Forgit, Peter J. Valianatos, Craig A. Herb, Guy M. Danner
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Publication number: 20030132908Abstract: An electrophoretic display has a viewing surface, and includes an image pixel. The image pixel includes a first plurality of particles having a first mobility, and a second plurality of particles having a second mobility. At a first addressing voltage, the first mobility is greater than the second mobility. At a second addressing voltage, the second mobility is greater than the first mobility. At least one of the first and second mobilities is a variable function of voltage, i.e., a function of an applied electric field. Application of the first addressing voltage produces a first optical state, which is determined by a motion of the first plurality of particles. Application of the second addressing voltage produces a second optical state determined by a motion of the second plurality of particles.Type: ApplicationFiled: November 18, 2002Publication date: July 17, 2003Inventors: Craig A. Herb, Libing Zhang
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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: 6022547Abstract: Rinse-off, water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating an emulsifier and/or a second topically-active compound. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.Type: GrantFiled: June 28, 1996Date of Patent: February 8, 2000Assignee: Helene Curtis, Inc.Inventors: Craig A. Herb, Liang Bin Chen, Judy Chung, Michelle A. Long, Wei Mei Sun, Gerald P. Newell, Trefor A. Evans, Kimberly Kamis, Richard M. Brucks
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Patent number: 5942216Abstract: Water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating a surfactant system capable of forming liquid crystals as an emulsifier. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.Type: GrantFiled: February 21, 1997Date of Patent: August 24, 1999Assignee: Helene Curtis, Inc.Inventors: Craig A. Herb, Liang Bin Chen, Judy B. Chung, Michelle A. Long, Wei Mei Sun
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Patent number: 5656280Abstract: Water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating a surfactant system capable of forming liquid crystals as an emulsifier. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.Type: GrantFiled: December 6, 1994Date of Patent: August 12, 1997Assignee: Helene Curtis, Inc.Inventors: Craig A. Herb, Liang Bin Chen, Judy Chung, Michelle A. Long, Wei Mei Sun, Gerald P. Newell, Trefor A. Evans, Kimberly Kamis, Richard M. Brucks
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Patent number: 5589177Abstract: Rinse-off, water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating an emulsifier and/or a second topically-active compound. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.Type: GrantFiled: December 6, 1994Date of Patent: December 31, 1996Assignee: Helene Curtis, Inc.Inventors: Craig A. Herb, Liang B. Chen, Judy B. Chung, Michelle A. Long, Wei M. Sun, Gerald P. Newell, Kimberly Kamis, Richard M. Brucks
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Patent number: 5534246Abstract: Roll-on or gel topically-effective compositions comprising a topically-active compound, a silicon-free surfactant or silicon-free surfactant blend having an HLB value of about 0.1 to about 10, an organic phase comprising a volatile silicone compound or a volatile hydrocarbon compound, and water.Type: GrantFiled: August 29, 1994Date of Patent: July 9, 1996Assignee: Helene Curtis, Inc.Inventors: Craig A. Herb, Wei-Mei Sun, Priscilla M. Walling, Susan A. Stiffe