Patents by Inventor William Doane
William Doane 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: 9235096Abstract: A system including a cholesteric liquid crystal (ChLC) display device and an erasing device. The display device (e.g., a writing tablet, liquid crystal paper) is inductively coupled to the erasing device for inductively erasing an image on the display device. Also featured is a ChLC display device that can be inductively erased.Type: GrantFiled: August 26, 2013Date of Patent: January 12, 2016Assignee: KENT DISPLAYS INCORPORATEDInventors: Erica N. Montbach, Mark Lightfoot, J. William Doane
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Publication number: 20150054775Abstract: A system including a cholesteric liquid crystal (ChLC) display device and an erasing device. The display device (e.g., a writing tablet, liquid crystal paper) is inductively coupled to the erasing device for inductively erasing an image on the display device. Also featured is a ChLC display device that can be inductively erased.Type: ApplicationFiled: August 26, 2013Publication date: February 26, 2015Applicant: Kent Displays IncorporatedInventors: Erica N. Montbach, Mark Lightfoot, J. William Doane
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Patent number: 8691111Abstract: A liquid crystal composition comprising a chiral dopant compound represented by the following formula: wherein: R1, R2 are independently aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; R3 and R4 are independently hydrogen, halogen, cyano, alkoxy, NHCOR7, NHSO2R7, COOR7, OCOR7, aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine with either R1 or R2 to form a carbocylic or heterocyclic ring; R5 and R6 are independently hydrogen, CH2, CH, alkyl or aryl either substituted or unsubstituted, COOR7, or combine with L to form a carbocyclic or heterocyclic ring; R7 is aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl or heterocyclic all either substituted or unsubstituted; L is the non-metallic elements required to form a carbocyclic or heterocyclic ring, or a single bond or a double bond; m is 1-3; n is 0-12.Type: GrantFiled: April 26, 2012Date of Patent: April 8, 2014Assignee: Kent Displays Inc.Inventors: Donald R. Diehl, Thomas Welter, Erica N. Montbach, J. William Doane, Nithya Venkataraman
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Patent number: 8329058Abstract: A photodisplay device in which an optically addressed image can be viewed indefinitely, erased and readdressed with a new image is disclosed. Optically responsive reversible photochiral materials are incorporated into a bistable cholesteric liquid crystal in an electrooptic display cell. A high resolution image exposed on the cell is fixed by a low voltage pulse to unpatterned electrodes and can be, at a later time, erased with a high voltage pulse.Type: GrantFiled: June 13, 2007Date of Patent: December 11, 2012Assignees: Kent Displays Incorporated, Kent State UniversityInventors: Quan Li, Lisa M. Green, J. William Doane, Asad A. Khan, Nithya Venkataraman, Irina Shiyanovskaya
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Publication number: 20120273725Abstract: A liquid crystal composition comprising a chiral dopant compound represented by the following formula: wherein: R1, R2 are independently aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; R3 and R4 are independently hydrogen, halogen, cyano, alkoxy, NHCOR7, NHSO2R7, COOR7, OCOR7, aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine with either R1 or R2 to form a carbocylic or heterocyclic ring; R5 and R6 are independently hydrogen, CH2, CH, alkyl or aryl either substituted or unsubstituted, COOR7, or combine with L to form a carbocyclic or heterocyclic ring; R7 is aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl or heterocyclic all either substituted or unsubstituted; L is the non-metallic elements required to form a carbocyclic or heterocyclic ring, or a single bond or a double bond; m is 1-3; n is 0-12.Type: ApplicationFiled: April 26, 2012Publication date: November 1, 2012Applicants: Kent State University, Kent Displays IncorporatedInventors: Donald R. Diehl, Thomas Welter, Erica N. Montbach, J. William Doane, Nithya Venkataraman
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Publication number: 20120268420Abstract: A writing/drawing tablet utilizing a data capture device such as a pressure sensitive display with data capture component that can capture data from the resulting image drawn on the device for storage. In general, Bistable Liquid Crystal Displays (BLCD), and in particular, Cholesteric Liquid Crystal Displays (ChLCDs), can be utilized in the tablet. The tablet can also be adapted to connect to external devices for displaying images being drawn on the tablet or that were previously stored.Type: ApplicationFiled: April 27, 2012Publication date: October 25, 2012Inventors: Duane Marhefka, J. William Doane, Tod L. Schneider
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Patent number: 8199086Abstract: The invention comprises a stacked color photodisplay apparatus using a photosensitive cholesteric liquid crystalline material on which an image can be optically addressed, retained without degradation for an indefinite period of time, electrically erased and a new image addressed. This is similar to a photographic film except that the photodisplay film can be used over and over again similar to digital display but without the cost of addressing electronics. Included is a device for enhancing the brightness of the image and electrooptical devices for optically writing digital images on the photodisplay. Each cell in the stack can be selectively addressed with a different optical image such as the red, green and blue components of a color digital image.Type: GrantFiled: July 1, 2008Date of Patent: June 12, 2012Assignee: Kent Displays IncorporatedInventors: J. William Doane, Asad A. Khan, Erica Montbach, Nithya Venkataraman
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Publication number: 20120127136Abstract: A display device includes a piezoelectric layer. First electrically conductive electrodes are disposed on both sides of the piezoelectric layer. A bistable liquid crystal layer is disposed adjacent the piezoelectric layer. Second electrically conductive electrodes are disposed on both sides of the liquid crystal layer. The liquid crystal layer can be addressed by electrically addressing the piezoelectric layer causing the piezoelectric layer to move into contact with the liquid crystal layer, changing the brightness of pixels of the liquid crystal layer.Type: ApplicationFiled: August 18, 2011Publication date: May 24, 2012Applicant: KENT DISPLAYS INCORPORATEDInventors: Tod SCHNEIDER, Erica MONTBACH, J. William Doane, Antal JAKLI, John HARDEN
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Patent number: 8138939Abstract: A display for use on medical dispensing equipment, and the resulting medical device and its method of display. In particular, provided are a number of specific embodiments of such a display on a medical device, including a film display for use on pill bottles and pill dispensers that utilize colored images as a dosage reminder for the user, a conformable bistable reflective display for use on drug delivery devices, and a conformable bistable reflective display for use on blood glucose meters.Type: GrantFiled: July 23, 2008Date of Patent: March 20, 2012Assignee: Manning Ventures, Inc.Inventors: William Manning, Sarah Kwon, Albert Green, Joel Domino, Asad Khan, J. William Doane
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Patent number: 8139039Abstract: An electronic writing tablet is composed of one or more layers on which an image is formed and can be selectively erased. One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed while applying writing pressure. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color. Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected (usually by applying a suitable voltage) while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be fully erased and new images written on the tablet.Type: GrantFiled: July 29, 2008Date of Patent: March 20, 2012Assignee: Kent Displays, IncorporatedInventors: Tod L. Schneider, Erica Montbach, J. William Doane
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Patent number: 8017553Abstract: Superabsorbent polymer (SAP) products for use in agricultural applications, and methods of making and using the same are disclosed. Certain of the SAPs include a monomer or a mixture of monomers, selected from acrylic acid, acrylamide, acrylonitrile, methacrylamide, 2-acryloamido-2-methyl-propanesulfonic acid, methacrylic acid, vinyl sulfonic acid, ethyl acrylate, potassium acrylate, derivatives thereof or mixtures thereof, that is graft polymerized onto a starch in the presence of an initiator to form a starch graft copolymer.Type: GrantFiled: November 4, 2008Date of Patent: September 13, 2011Assignee: Absorbent Technologies, Inc.Inventors: William McKee Doane, Steven William Doane, Milan H. Savich
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Patent number: 7796103Abstract: The present invention relates to a display film that may be transferred by lamination or otherwise onto a substrate. The display film is formed of a stack of layers that can include different types, arrangements, and functionality within the stack depending upon factors including the characteristics of the substrate (e.g., upper or lower, transparent or opaque, substrates) and addressing of the display (e.g., active or passive matrix, electrical or optical addressing). The layers of the stacked display film include one or more electrode layers and one or more liquid crystal layers and, in addition, may include various combinations of an adhesive layer, preparation layer, casting layer, light absorbing layer, insulation layers, and protective layers. The liquid crystal layer can include cholesteric or other liquid crystal material. The liquid crystal layer can be a dispersion of liquid crystal in a polymer matrix formed by a variety of techniques.Type: GrantFiled: January 28, 2005Date of Patent: September 14, 2010Assignee: Kent Displays IncorporatedInventors: J. William Doane, Asad A. Khan, Irina Shiyanovskaya, Albert Green
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Patent number: 7773064Abstract: The present invention relates to a display film that may be transferred by lamination or otherwise onto a substrate. The display film is formed of a stack of layers that can include different types, arrangements, and functionality within the stack depending upon factors including the characteristics of the substrate (e.g., upper or lower, transparent or opaque, substrates) and addressing of the display (e.g., active or passive matrix, electrical or optical addressing). The layers of the stacked display film include one or more electrode layers and one or more liquid crystal layers and, in addition, may include various combinations of an adhesive layer, preparation layer, casting layer, light absorbing layer, insulation layers, and protective layers. The liquid crystal layer can include cholesteric or other liquid crystal material. The liquid crystal layer can be a dispersion of liquid crystal in a polymer matrix formed by a variety of techniques.Type: GrantFiled: January 28, 2005Date of Patent: August 10, 2010Assignee: Kent Displays IncorporatedInventors: J. William Doane, Asad A. Khan, Irina Shiyanovskaya
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Publication number: 20100157180Abstract: A flexible liquid crystal display is provided wherein an addressable liquid crystal layer is disposed on a single flexible substrate so that the display itself will exhibit flexibility. The substrate is preferably a flexible non-transparent material and more preferably a drapable material such as fabric.Type: ApplicationFiled: April 6, 2007Publication date: June 24, 2010Applicant: KENT DISPLAYS INCORPORATEDInventors: J. William Doane, Asad A. Khan, Irina Shiyanovskaya, Albert Green
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Publication number: 20090096942Abstract: An electronic writing tablet is composed of one or more layers on which an image is formed and can be selectively erased. One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed while applying writing pressure. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color. Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected (usually by applying a suitable voltage) while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be fully erased and new images written on the tablet.Type: ApplicationFiled: July 29, 2008Publication date: April 16, 2009Applicant: Kent Displays IncorporatedInventors: Tod L. Schneider, Erica Montbach, J. William Doane
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Publication number: 20090069185Abstract: Superabsorbent polymer (SAP) products for use in agricultural applications, and methods of making and using the same are disclosed. Certain of the SAPs include a monomer or a mixture of monomers, other than acrylonitrile, that is graft polymerized onto a starch in the presence of an initiator to form a starch graft copolymer that is cross-linked and the SAP product is isolated.Type: ApplicationFiled: November 4, 2008Publication date: March 12, 2009Applicant: Absorbent Technologies, Inc.Inventors: William McKee Doane, Steven William Doane, Milan H. Savich
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Publication number: 20090051560Abstract: A display for use on medical dispensing equipment, and the resulting medical device and its method of display. In particular, provided are a number of specific embodiments of such a display on a medical device, including a film display for use on pill bottles and pill dispensers that utilize colored images as a dosage reminder for the user, a conformable bistable reflective display for use on drug delivery devices, and a conformable bistable reflective display for use on blood glucose meters.Type: ApplicationFiled: July 23, 2008Publication date: February 26, 2009Inventors: William MANNING, Sarah KWON, Albert GREEN, Joel DOMINO, Asad KHAN, J. William DOANE
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Publication number: 20080309598Abstract: The invention comprises a stacked color photodisplay apparatus using a photosensitive cholesteric liquid crystalline material on which an image can be optically addressed, retained without degradation for an indefinite period of time, electrically erased and a new image addressed. This is similar to a photographic film except that the photodisplay film can be used over and over again similar to digital display but without the cost of addressing electronics. Included is a device for enhancing the brightness of the image and electrooptical devices for optically writing digital images on the photodisplay. Each cell in the stack can be selectively addressed with a different optical image such as the red, green and blue components of a color digital image.Type: ApplicationFiled: July 1, 2008Publication date: December 18, 2008Inventors: J. William Doane, Asad A. Khan, Erica Montbach, Nithya Venkataraman
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Patent number: 7459501Abstract: Superabsorbent polymer (SAP) products for use in agricultural applications, and methods of making and using the same are disclosed. Certain of the SAPs include a monomer or a mixture of monomers, other than acrylonitrile, that is graft polymerized onto a starch in the presence of an initiator to form a starch graft copolymer that is cross-linked and the SAP product is isolated.Type: GrantFiled: January 22, 2008Date of Patent: December 2, 2008Assignee: Absorbent Technologies, Inc.Inventors: William McKee Doane, Steven William Doane, Milan H. Savich
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Patent number: 7425595Abstract: A superabsorbent polymer combined with a beneficial additive and method for administering the same in agricultural applications is disclosed. A method for delivering a beneficial additive in agricultural applications includes obtaining a beneficial additive combined with a superabsorbent starch graft copolymer and dispensing the combined beneficial additive and superabsorbent polymer in an agricultural environment.Type: GrantFiled: August 8, 2006Date of Patent: September 16, 2008Assignee: Absorbent Technologies, Inc.Inventors: Milan H. Savich, Gary S. Olson, Eddie W. Clark, William McKee Doane, Steven William Doane