Patents by Inventor Ken Choju

Ken Choju 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).

  • Borosilicate glass for pharmaceutical container
    Patent number: 10710925
    Abstract: A borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which a content of CaO is equal to or greater than 0 and smaller than 0.5 mol %, a value of (Na2O+K2O+Li2O—Al2O3)/B2O3 is 0.315 to 0.350 in terms of a molar ratio, and BaO is not substantially included.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: July 14, 2020
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Miki Kimura, Shinsaku Nishida, Ken Choju
  • Borosilicate glass for pharmaceutical container
    Patent number: 10669186
    Abstract: A borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which a content of CaO is equal to or greater than 0 and smaller than 0.5 mol %, a value of (Na2O+K2O+Li2O—Al2O3)/B2O3 is 0.315 to 0.350 in terms of a molar ratio, and BaO is not substantially included.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: June 2, 2020
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Miki Kimura, Shinsaku Nishida, Ken Choju
  • Glass for pharmaceutical containers
    Patent number: 10450217
    Abstract: A glass for pharmaceutical containers, which is resistant to delamination and has excellent processibility, is provided. The glass for pharmaceutical containers comprises, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO. The glass has a hydrolytic resistance of Class 1 in a test in accordance with the European pharmacopoeia.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: October 22, 2019
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kazuyuki Yamamoto, Ken Choju
  • Glass for pharmaceutical containers
    Patent number: 10384975
    Abstract: A glass for pharmaceutical containers, which is resistant to delamination and has excellent processibility, is provided. The glass for pharmaceutical containers comprises, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO. The glass has a hydrolytic resistance of Class 1 in a test in accordance with the European pharmacopoeia.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: August 20, 2019
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kazuyuki Yamamoto, Ken Choju
  • Borosilicate glass for pharmaceutical container and glass tube for pharmaceutical container
    Patent number: 10099956
    Abstract: A borosilicate glass for a pharmaceutical container having high appearance quality, particularly a small number of air lines, and a glass tube for a pharmaceutical container are provided. The borosilicate glass for a pharmaceutical container contains, in mass %, from 70.0 to 78.0% of SiO2, from 5.0 to 8.0% of Al2O3, from 5.0 to 12.0% of B2O3, from 0 to 4.0% of CaO, from 0 to 4.0% of BaO, from 4.0 to 8.0% of Na2O, from 0 to 5.0% of K2O and from 0.001 to 1.0% of SnO2.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: October 16, 2018
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Ken Choju, Miki Kimura, Kazuyuki Yamamoto
  • GLASS FOR PHARMACEUTICAL CONTAINERS
    Publication number: 20180265401
    Abstract: A glass for pharmaceutical containers, which is resistant to delamination and has excellent processibility, is provided. The glass for pharmaceutical containers comprises, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO. The glass has a hydrolytic resistance of Class 1 in a test in accordance with the European pharmacopoeia.
    Type: Application
    Filed: May 8, 2018
    Publication date: September 20, 2018
    Inventors: Kazuyuki YAMAMOTO, Ken CHOJU
  • BOROSILICATE GLASS FOR PHARMACEUTICAL CONTAINER, GLASS TUBE FOR PHARMACEUTICAL CONTAINER, AND MANUFACTURING METHOD FOR PHARMACEUTICAL CONTAINER
    Publication number: 20180257975
    Abstract: Provided is a borosilicate glass for a pharmaceutical container which has good processability in spite of not including BaO. The borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which BaO is not substantially included, and a water content in glass is 0.30 to 0.80/mm in terms of ?-OH value.
    Type: Application
    Filed: August 29, 2016
    Publication date: September 13, 2018
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Miki KIMURA, Shinsaku NISHIDA, Ken CHOJU, Takanori IWASAKI
  • BOROSILICATE GLASS FOR PHARMACEUTICAL CONTAINER
    Publication number: 20180208496
    Abstract: A borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which a content of CaO is equal to or greater than 0 and smaller than 0.5 mol %, a value of (Na2O+K2O+Li2O—Al2O3)/B2O3 is 0.315 to 0.350 in terms of a molar ratio, and BaO is not substantially included.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 26, 2018
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Miki KIMURA, Shinsaku NISHIDA, Ken CHOJU
  • Strengthened glass, strengthened glass plate, strengthened glass container, and glass for strengthening
    Patent number: 9919949
    Abstract: To devise a tempered glass and a glass to be tempered each of which is lowered in density and viscosity at high temperature, hardly deteriorates a KNO3 molten salt, and is excellent in thermal shock resistance. The tempered glass having a compression stress layer in a surface thereof, including as a glass composition, in terms of mol %, 50 to 80% of SiO2, 5 to 30% of Al2O3, 0 to 2% of Li2O, 5 to 25% of Na2O, and 0 to 5% of K2O, and being substantially free of As2O3, Sb2O3, PbO, and F.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 20, 2018
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kosuke Kawamoto, Ken Choju
  • GLASS COMPOSITION FOR WOUND CARE, WOUND COVERING MATERIAL, AND METHOD FOR PRODUCING SAME
    Publication number: 20170326266
    Abstract: Provided are: a glass composition for wound care, which promotes a wound healing process by providing a moist environment and nutrients necessary for growth of epidermal cells, and which has bactericidal properties for preventing critical fixing of bacteria to a wound surface and infection with bacteria; and a wound covering material that uses the glass composition. The glass composition contains, by mass % in terms of oxides, 5 to 70% of SiO2, 0 to 10% of Al2O3, 5 to 40.0% of B2O3, and 1 to 50% of CaO.
    Type: Application
    Filed: December 8, 2015
    Publication date: November 16, 2017
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Hiroshi SAWASATO, Ken CHOJU
  • BOROSILICATE GLASS FOR PHARMACEUTICAL CONTAINER AND GLASS TUBE FOR PHARMACEUTICAL CONTAINER
    Publication number: 20170283302
    Abstract: A borosilicate glass for a pharmaceutical container having high appearance quality, particularly a small number of air lines, and a glass tube for a pharmaceutical container are provided. The borosilicate glass for a pharmaceutical container contains, in mass %, from 70.0 to 78.0% of SiO2, from 5.0 to 8.0% of Al2O3, from 5.0 to 12.0% of B2O3, from 0 to 4.0% of CaO, from 0 to 4.0% of BaO, from 4.0 to 8.0% of Na2O, from 0 to 5.0% of K2O and from 0.001 to 1.0% of SnO2.
    Type: Application
    Filed: August 25, 2015
    Publication date: October 5, 2017
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Ken CHOJU, Miki KIMURA, Kazuyuki YAMAMOTO
  • GLASS FOR PHARMACEUTICAL CONTAINERS
    Publication number: 20160107924
    Abstract: An object of the present invention is to provide a glass for pharmaceutical containers, which is resistant to delamination and has excellent processibility. The glass for pharmaceutical containers of the present invention comprises, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO. The glass has a hydrolytic resistance of Class 1 in a test in accordance with the European pharmacopoeia.
    Type: Application
    Filed: June 4, 2014
    Publication date: April 21, 2016
    Inventors: Kazuyuki YAMAMOTO, Ken CHOJU
  • STRENGTHENED GLASS, STRENGTHENED GLASS PLATE, STRENGTHENED GLASS CONTAINER, AND GLASS FOR STRENGTHENING
    Publication number: 20150329406
    Abstract: To devise a tempered glass and a glass to be tempered each of which is lowered in density and viscosity at high temperature, hardly deteriorates a KNO3 molten salt, and is excellent in thermal shock resistance. The tempered glass having a compression stress layer in a surface thereof, including as a glass composition, in terms of mol %, 50 to 80% of SiO2, 5 to 30% of Al2O3, 0 to 2% of Li2O, 5 to 25% of Na2O, and 0 to 5% of K2O, and being substantially free of As2O3, Sb2O3, PbO, and F.
    Type: Application
    Filed: December 18, 2013
    Publication date: November 19, 2015
    Inventors: Kosuke KAWAMOTO, Ken CHOJU
  • GLASS FOR PHARMACEUTICAL CONTAINERS, GLASS TUBE FOR PHARMACEUTICAL CONTAINERS OBTAINED THEREFROM, METHOD FOR PRODUCING PHARMACEUTICAL CONTAINER, AND PHARMACEUTICAL CONTAINER
    Publication number: 20150246846
    Abstract: Provided is a glass for pharmaceutical containers which, after formed into final products such as ampoules, vials, pre-filled syringes, and cartridges, renders the containers capable of being sufficiently chemically strengthened, and a glass tube formed therefrom. The glass for pharmaceutical containers of the present invention comprises, in terms of mol %, 50-80% of SiO2, 5-30% of Al2O3, 0-2% of Li2O, and 5-25% of Na2O.
    Type: Application
    Filed: July 17, 2013
    Publication date: September 3, 2015
    Inventors: Ken Choju, Kosuke Kawamoto, Kazuyuki Yamamoto, Takashi Murata
  • Radiation-shielding glass and method of manufacturing the same
    Patent number: 8119999
    Abstract: Provided is a radiation-shielding glass, including a glass composition in % by mass of 10 to 35% SiO2, 55 to 80% PbO, 0 to 10% B2O3, 0 to 10% Al2O3, 0 to 10% SrO, 0 to 10% BaO, 0 to 10% Na2O, and 0 to 10% K2O, in which the radiation-shielding glass has a total light transmission at a wavelength of 400 nm at a thickness of 10 mm of 50% or higher. Also provided is a radiation-shielding glass which has the similar glass composition and can be used for a gamma-ray shielding glass for a PET examination.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: February 21, 2012
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Ken Choju, Shinkichi Miwa
  • Radiation-Shielding Glass and Method of Manufacturing the Same
    Publication number: 20090242809
    Abstract: Provided is a radiation-shielding glass, including a glass composition in % by mass of 10 to 35% SiO2, 55 to 80% PbO, 0 to 10% B2O3, 0 to 10% Al2O3, 0 to 10% SrO, 0 to 10% BaO, 0 to 10% Na2O, and 0 to 10% K2O, in which the radiation-shielding glass has a total light transmission at a wavelength of 400 nm at a thickness of 10 mm of 50% or higher. Also provided is a radiation-shielding glass which has the similar glass composition and can be used for a gamma-ray shielding glass for a PET examination.
    Type: Application
    Filed: October 13, 2006
    Publication date: October 1, 2009
    Inventors: Ken Choju, Shinkichi Miwa