Patents by Inventor Ann Norris

Ann Norris 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).

  • Publication number: 20220298265
    Abstract: A method for the synthesis of alkyl ?-carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the ?-carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid.
    Type: Application
    Filed: June 9, 2022
    Publication date: September 22, 2022
    Inventors: Kevin J. Edgar, Brittany L.B. Nichols, Junyi Chen, Charles Frazier, Lynne S. Taylor, Laura I. Mosquera-Giraldo, Ann Norris, Benjamin Adams
  • Patent number: 11384161
    Abstract: A method for the synthesis of alkyl ?-carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the ?-carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: July 12, 2022
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Kevin Edgar, Brittany L. B. Nichols, Junyi Chen, Charles Frazier, Ann Norris
  • Publication number: 20210047440
    Abstract: A method for the synthesis of alkyl ?-carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the ?-carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid.
    Type: Application
    Filed: January 11, 2019
    Publication date: February 18, 2021
    Inventors: Kevin Edgar, Brittany L. B. Nichols, Junyi Chen, Charles Frazier, Lynne S. Taylor, Laura I. Mosquera-Giraldo, Ann Norris, Benjamin Adams
  • Patent number: 9045668
    Abstract: An organosiloxane block copolymer includes 65 to 90 mol % of diorganosiloxane units having the formula R12-SiO2/2 (I). These diorganosiloxane units are arranged in linear blocks which have an average of from 10 to 400 diorganosiloxane units per linear block. The organosiloxane block copolymer also includes 10 to 35 mol % of siloxane units that have the average formula R2x(OR3)ySiO(4-x-y)/2 (II). The siloxane units are arranged in nonlinear blocks having at least 2 siloxane units per nonlinear block wherein 0.5?x?1.5 and 0?y?1. In addition, each R1 is independently a C1 to C10 hydrocarbyl, each R2 is independently an aryl or C4 to C10 hydrocarbyl, at least 50 mol % of R2 are aryl, and each R3 is independently R1 or H. Moreover, the organosiloxane block copolymer has a light transmittance of at least 95%.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 2, 2015
    Assignee: Dow Corning Corporation
    Inventors: John Horstman, Ann Norris, Steven Swier
  • Publication number: 20140366939
    Abstract: Methods for fabricating a photovoltaic module, and the resulting photovoltaic module, are provided and include selecting a photovoltaic cell operable to convert photons to electrons, selecting a light transparent superstrate material having a superstrate absorption coefficient and a superstrate refractive index, and selecting an encapsulant having an encapsulant absorption coefficient and an encapsulant refractive index, wherein an absorption coefficient relationship between the superstrate absorption coefficient and the encapsulant absorption coefficient and a refractive index relationship between the superstrate refractive index and the encapsulant refractive index are selected such that there is a gain in efficiency, and assembling the photovoltaic module using the selected materials.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 18, 2014
    Inventors: Barry Ketola, Ann Norris, Nick Powell, Keith McIntosh
  • Patent number: 8796532
    Abstract: Methods for fabricating a photovoltaic module, and the resulting photovoltaic module, are provided and include selecting a photovoltaic cell operable to convert photons to electrons, selecting a light transparent superstrate material having a superstrate absorption coefficient and a superstrate refractive index, and selecting an encapsulant having an encapsulant absorption coefficient and an encapsulant refractive index, wherein an absorption coefficient relationship between the superstrate absorption coefficient and the encapsulant absorption coefficient and a refractive index relationship between the superstrate refractive index and the encapsulant refractive index are selected such that there is a gain in efficiency, and assembling the photovoltaic module using the selected materials.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: August 5, 2014
    Assignees: Dow Corning Corporation, The Australian National University
    Inventors: Barry Ketola, Ann Norris, Nick Powell, Keith McIntosh, James Cotsell
  • Publication number: 20130168727
    Abstract: An organosiloxane block copolymer includes 65 to 90 mol % of diorganosiloxane units having the formula R12SiO2/2 (I). These diorganosiloxane units are arranged in linear blocks which have an average of from 10 to 400 diorganosiloxane units per linear block. The organosiloxane block copolymer also includes 10 to 35 mol % of siloxane units that have the average formula R2x(OR3)ySiO(4-x-y)/2 (II). The siloxane units are arranged in nonlinear blocks having at least 2 siloxane units per nonlinear block wherein 0.5?x?1.5 and 0?y?1. In addition, each R1 is independently a C1 to C10 hydrocarbyl, each R2 is independently an aryl or C4 to C10 hydrocarbyl, at least 50 mol % of R2 are aryl, and each R3 is independently R1 or H. Moreover, the organosiloxane block copolymer has a light transmittance of at least 95%.
    Type: Application
    Filed: September 21, 2011
    Publication date: July 4, 2013
    Applicant: Dow Corning Corporation
    Inventors: John Horstman, Ann Norris, Steven Swier
  • Patent number: 8258502
    Abstract: A composition includes: (I) an alkenyl functional, phenyl-containing polyorganosiloxane, an Si—H functional phenyl-containing polyorganosiloxane, or a combination thereof; (II) a hydrogendiorganosiloxy terminated oligodiphenylsiloxane having specific molecular weight, an alkenyl-functional, diorganosiloxy-terminated oligodiphenylsiloxane having specific molecular weight, or a combination thereof; and (III) a hydrosilylation catalyst. A light emitting device is made by applying the composition onto a light source followed by curing. The composition provides a cured material with mechanical properties suited for use as an encapsulant for a light emitting device.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: September 4, 2012
    Assignee: Dow Corning Corporation
    Inventors: Makoto Yoshitake, Masashi Murakami, Yoshitsugu Morita, Tomoko Kato, Hiroji Enami, Masayoshi Terada, Brian Harkness, Tammy Cheng, Michelle Cummings, Ann Norris, Malinda Howell
  • Publication number: 20120073654
    Abstract: Methods for fabricating a photovoltaic module, and the resulting photovoltaic module, are provided and include selecting a photovoltaic cell operable to convert photons to electrons, selecting a light transparent superstrate material having a superstrate absorption coefficient and a superstrate refractive index, and selecting an encapsulant having an encapsulant absorption coefficient and an encapsulant refractive index, wherein an absorption coefficient relationship between the superstrate absorption coefficient and the encapsulant absorption coefficient and a refractive index relationship between the superstrate refractive index and the encapsulant refractive index are selected such that there is a gain in efficiency, and assembling the photovoltaic module using the selected materials.
    Type: Application
    Filed: June 3, 2010
    Publication date: March 29, 2012
    Inventors: Barry Ketola, Ann Norris, Nich Powell, Keith McIntosh, James Cotsell
  • Patent number: 8071697
    Abstract: A process includes the steps of: 1) heating a mold at a temperature ranging from 100° C. to 200° C.; 2) feeding a silicone encapsulant composition including a mold release agent, where the composition has a viscosity ranging from 100 cps to 3,000 cps at operating temperatures of the process, to an assembly for preventing the silicone encapsulant composition from flowing backward out of the assembly; 3) injecting the silicone encapsulant composition from the assembly into a mold having a horizontal orientation and having a mold cavity through a gate, where the mold cavity has a top and a bottom, a vent is located at the top of the mold cavity, the vent comprises a channel 0.1 mm to 1 mm wide by 0.0001 mm to 0.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: December 6, 2011
    Assignee: Dow Corning Corporation
    Inventors: Lawrence Frisch, Maneesh Bahadur, Ann Norris
  • Publication number: 20100276721
    Abstract: A composition includes: (I) an alkenyl functional, phenyl-containing polyorganosiloxane, an Si—H functional phenyl-containing polyorganosiloxane, or a combination thereof; (II) a hydrogendiorganosiloxy terminated oligodiphenylsiloxane having specific molecular weight, an alkenyl-functional, diorganosiloxy-terminated oligodiphenylsiloxane having specific molecular weight, or a combination thereof; and (III) a hydrosilylation catalyst. A light emitting device is made by applying the composition onto a light source followed by curing. The composition provides a cured material with mechanical properties suited for use as an encapsulant for a light emitting device.
    Type: Application
    Filed: February 1, 2007
    Publication date: November 4, 2010
    Applicants: DOW CORNING CORPORATION, DOW CORNING TORAY CO., LTD.
    Inventors: Makoto Yoshitake, Masashi Murakami, Yoshitsugu Morita, Tomoko Kato, Hiroji Enami, Masayoshi Terada, Brian Harkness, Tammy Cheng, Michelle Cummings, Ann Norris, Malinda Howell
  • Publication number: 20080185601
    Abstract: A process includes the steps of: 1) heating a mold at a temperature ranging from 100° C. to 200° C.; 2) feeding a silicone encapsulant composition including a mold release agent, where the composition has a viscosity ranging from 100 cps to 3,000 cps at operating temperatures of the process, to an assembly for preventing the silicone encapsulant composition from flowing backward out of the assembly; 3) injecting the silicone encapsulant composition from the assembly into a mold having a horizontal orientation and having a mold cavity through a gate, where the mold cavity has a top and a bottom, a vent is located at the top of the mold cavity, the vent comprises a channel 0.1 mm to 1 mm wide by 0.0001 mm to 0.
    Type: Application
    Filed: March 16, 2006
    Publication date: August 7, 2008
    Inventors: Lawrence Frisch, Maneesh Bahadur, Ann Norris