Patents by Inventor Darwin Scott Bull
Darwin Scott Bull 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: 11886050Abstract: An electro-optic medium is disclosed including a continuous phase comprising a binder and a discontinuous phase comprising electro-optic material. The binder may include one or more elastomers having a Young's modulus less than 25 MPa. The electro-optic material may include capsules that encapsulate various kinds of materials capable of switching optical states, such as a plurality of charged particles dispersed in a suspending fluid and capable of moving upon application of an electric field to the suspending fluid. The electro-optic medium may be incorporated into a laminated flexible electro-optic display having an outer light-transmissive protective layer and conductive material on either side of the electro-optic medium. The conductive material on at least one side of the electro-optic medium may also be light-transmissive. The opposing side of the display relative to the outer protective layer may also include a substrate.Type: GrantFiled: May 27, 2022Date of Patent: January 30, 2024Assignee: E Ink CorporationInventor: Darwin Scott Bull
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Patent number: 11782322Abstract: An electro-optic assembly includes a layer of electro-optic material configured to switch optical states upon application of an electric field and an anisotropically conductive layer having one or more moisture-resistive polymers and a conductive material, the moisture-resistive polymer having a WVTR less than 5 g/(m2*d).Type: GrantFiled: November 1, 2022Date of Patent: October 10, 2023Assignee: E Ink CorporationInventor: Darwin Scott Bull
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Publication number: 20230046003Abstract: n electro-optic assembly includes a layer of electro-optic material configured to switch optical states upon application of an electric field and an anisotropically conductive layer having one or more moisture-resistive polymers and a conductive material, the moisture-resistive polymer having a WVTR less than 5 g/(m2*d).Type: ApplicationFiled: November 1, 2022Publication date: February 16, 2023Inventor: Darwin Scott BULL
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Publication number: 20230040814Abstract: An electrophoretic display (100) comprises an electrophoretic medium (114) having electrically charged particles disposed in a fluid and capable of moving through the fluid on application of an electric field. An electrode (104, 120) is disposed adjacent the electrophoretic medium and arranged to apply an electric field thereto. A dielectric layer (106, 118) is disposed between the electrophoretic medium (114) and the electrode (104, 120) and has at least one aperture (107, 119) extending therethrough. The provision of the apertures (107, 119) in the dielectric layers enables the dielectric layers (106, 118) to protect the electrodes (104, 120) while reducing electro-optical kickback. When multiple electrodes (104, 120) are present adjacent the electrophoretic medium (114), more than one or all of the electrodes (104, 120) may be provided with apertured dielectric layers (106, 118).Type: ApplicationFiled: July 28, 2022Publication date: February 9, 2023Inventors: Karl Raymond AMUNDSON, Kosta LADAVAC, Stephen J. TELFER, Dan John LAUBER, Darwin Scott BULL
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Patent number: 11520211Abstract: An electro-optic assembly includes a layer of electro-optic material configured to switch optical states upon application of an electric field and an anisotropically conductive layer having one or more moisture-resistive polymers and a conductive material, the moisture-resistive polymer having a WVTR less than 5 g/(m2*d).Type: GrantFiled: December 17, 2019Date of Patent: December 6, 2022Assignee: E Ink CorporationInventor: Darwin Scott Bull
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Publication number: 20220291530Abstract: An electro-optic medium is disclosed including a continuous phase comprising a binder and a discontinuous phase comprising electro-optic material. The binder may include one or more elastomers having a Young's modulus less than 25 MPa. The electro-optic material may include capsules that encapsulate various kinds of materials capable of switching optical states, such as a plurality of charged particles dispersed in a suspending fluid and capable of moving upon application of an electric field to the suspending fluid. The electro-optic medium may be incorporated into a laminated flexible electro-optic display having an outer light-transmissive protective layer and conductive material on either side of the electro-optic medium. The conductive material on at least one side of the electro-optic medium may also be light-transmissive. The opposing side of the display relative to the outer protective layer may also include a substrate.Type: ApplicationFiled: May 27, 2022Publication date: September 15, 2022Inventor: Darwin Scott BULL
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Patent number: 11378824Abstract: An electro-optic medium is disclosed including a continuous phase comprising a binder and a discontinuous phase comprising electro-optic material. The binder may include one or more elastomers having a Young's modulus less than 25 MPa. The electro-optic material may include capsules that encapsulate various kinds of materials capable of switching optical states, such as a plurality of charged particles dispersed in a suspending fluid and capable of moving upon application of an electric field to the suspending fluid. The electro-optic medium may be incorporated into a laminated flexible electro-optic display having an outer light-transmissive protective layer and conductive material on either side of the electro-optic medium. The conductive material on at least one side of the electro-optic medium may also be light-transmissive. The opposing side of the display relative to the outer protective layer may also include a substrate.Type: GrantFiled: July 29, 2019Date of Patent: July 5, 2022Assignee: E Ink CorporationInventor: Darwin Scott Bull
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Patent number: 10886471Abstract: The present teachings relate to novel polymeric materials for electrode treatment. The present polymeric electrode modifiers can be derived from an episulfide monomer via either an acid-catalyzed ring-opening polymerization reaction or a nucleophilic polymerization reaction.Type: GrantFiled: June 6, 2018Date of Patent: January 5, 2021Assignee: Flexterra, Inc.Inventors: Zhihua Chen, Darwin Scott Bull, Mark Seger, Timothy Chiu, Yu Xia, Antonio Facchetti
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Publication number: 20200354654Abstract: Liquid detergent compositions are disclosed which comprise one or more shell-core capsules types. The core comprises one or more enzymes, wherein the material that forms the shell is able to be degraded by at least one of the enzymes. The capsules preserve the activity properties of the enzymes during the storage of the liquid detergent composition and they release the ingredients upon the application of shear during the use of the liquid detergent composition in a washing process. The methodology also enables the presence of incompatible benefit agents in the same product, and the reduction of undesirable residue on the articles that are being washed.Type: ApplicationFiled: April 17, 2020Publication date: November 12, 2020Inventors: Rosa CASADO, Jay William ANSETH, Jin-Gyu PARK, Darwin Scott BULL
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Publication number: 20200203613Abstract: The present teachings relate to novel polymeric materials for electrode treatment. The present polymeric electrode modifiers can be derived from an episulfide monomer via either an acid-catalyzed ring-opening polymerization reaction or a nucleophilic polymerization reaction.Type: ApplicationFiled: June 6, 2018Publication date: June 25, 2020Inventors: Zhihua Chen, Darwin Scott Bull, Mark Seger, Timothy Chiu, Yu Xia, Antonio Facchetti
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Publication number: 20200192176Abstract: An electro-optic assembly includes a layer of electro-optic material configured to switch optical states upon application of an electric field and an anisotropically conductive layer having one or more moisture-resistive polymers and a conductive material, the moisture-resistive polymer having a WVTR less than 5 g/(m2*d).Type: ApplicationFiled: December 17, 2019Publication date: June 18, 2020Inventor: Darwin Scott BULL
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Publication number: 20200050025Abstract: An electro-optic medium is disclosed including a continuous phase comprising a binder and a discontinuous phase comprising electro-optic material. The binder may include one or more elastomers having a Young's modulus less than 25 MPa. The electro-optic material may include capsules that encapsulate various kinds of materials capable of switching optical states, such as a plurality of charged particles dispersed in a suspending fluid and capable of moving upon application of an electric field to the suspending fluid. The electro-optic medium may be incorporated into a laminated flexible electro-optic display having an outer light-transmissive protective layer and conductive material on either side of the electro-optic medium. The conductive material on at least one side of the electro-optic medium may also be light-transmissive. The opposing side of the display relative to the outer protective layer may also include a substrate.Type: ApplicationFiled: July 29, 2019Publication date: February 13, 2020Inventor: Darwin Scott BULL
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Patent number: 10147895Abstract: The present teachings relate to curable linear polymers that can be used as active and/or passive organic materials in various electronic, optical, and optoelectronic devices. In some embodiments, the device can include an organic semiconductor layer and a dielectric layer prepared from such curable linear polymers. In some embodiments, the device can include a passivation layer prepared from the linear polymers described herein. The present linear polymers can be solution-processed, then cured thermally (particularly, at relatively low temperatures) and/or photochemically into various thin film materials with desirable properties.Type: GrantFiled: July 13, 2016Date of Patent: December 4, 2018Assignee: Flexterra, Inc.Inventors: Shaofeng Lu, Antonio Facchetti, Xiang Yu, Darwin Scott Bull, Karen K. Chan
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Publication number: 20170104080Abstract: The present teachings relate to curable linear polymers that can be used as active and/or passive organic materials in various electronic, optical, and optoelectronic devices. In some embodiments, the device can include an organic semiconductor layer and a dielectric layer prepared from such curable linear polymers. In some embodiments, the device can include a passivation layer prepared from the linear polymers described herein. The present linear polymers can be solution-processed, then cured thermally (particularly, at relatively low temperatures) and/or photochemically into various thin film materials with desirable properties.Type: ApplicationFiled: July 13, 2016Publication date: April 13, 2017Inventors: Shaofeng Lu, Antonio Facchetti, Xiang Yu, Darwin Scott Bull, Karen K. Chan
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Patent number: 9341948Abstract: Described herein is a solution-processable composition for preparing a photopatternable material. The solution-processable composition generally includes (a) an oligomeric siloxane component that includes, based on its total weight, between about 40% by weight and about 100% by weight one or more cage-structured polyhedral oligomeric silsesquioxanes that are functionalized with one or more crosslinkable moieties such as cycloaliphatic epoxy moieties, (b) a polymerization initiator; (c) one or more thermosettable polymers that collectively are present in an amount between about 1% by weight and about 20% by weight based on the total weight of the oligomeric siloxane component; and (d) a solvent.Type: GrantFiled: August 25, 2014Date of Patent: May 17, 2016Assignee: Polyera CorporationInventors: Chun Huang, Zhikai Wang, Yu Xia, Meko McCray, Theresa L. Starck, Darwin Scott Bull, Antonio Facchetti, Xiang Yu
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Publication number: 20150056553Abstract: The present inorganic-organic hybrid materials can be patterned with relatively low photo-exposure energies and are thermally stable, mechanically robust, resist water penetration, and show good adhesion to metal oxides, metals, metal alloys, as well as organic materials. The present materials can be solution-processed (e.g., by spin-coating), and can exhibit good chemical (e.g., solvent and etchant) resistance in the cured form.Type: ApplicationFiled: August 25, 2014Publication date: February 26, 2015Inventors: Chun Huang, Zhikai Wang, Yu Xia, Meko McCray, Theresa L. Starck, Darwin Scott Bull, Antonio Facchetti, Xiang Yu
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Patent number: 7745505Abstract: UV-crosslinkable acrylic hotmelt pressure sensitive adhesives comprising acrylic and vinyl monomers, and a polymerizable UV photoinitiator. The photoinitiator comprises a spacer comprising both ethylene oxide and urethane, or urea, carbonate, or siloxane functional groups. The ethylene oxide is directly bonded to the chromophore (e.g., benzophenone) moiety, while the urethane (or urea, carbonate, siloxane) is closely linked to the polymerizable moiety (e.g., styrenic C?C double bond).Type: GrantFiled: December 29, 2004Date of Patent: June 29, 2010Assignee: Henkel AG & Co. KGaAInventors: Yuxia Liu, Darwin Scott Bull
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Patent number: 5652196Abstract: Products for the variable controlled release of water soluble agents are disclosed. The products have a core of water soluble agent and a first and second coating. The first coating has a permeability such that the agent can be released at a controlled rate, while the second coating has a relatively low water vapor transmission rate. Variation in the coating thicknesses and coating conditions result in nutrient release profiles which can be tailored to specific plant requirements. After application of the product, release of the agent is negligible, but after a predetermined time, e.g. one month or more, substantial release of the agent from the coated product begins. The product is particularly suitable for delayed, controlled release fertilizers.Type: GrantFiled: March 24, 1995Date of Patent: July 29, 1997Assignee: OMS Investments, Inc.Inventors: Narender Pal Luthra, Darwin Scott Bull, Garrard Lee Hargrove