Patents by Inventor Yukihito Nagashima
Yukihito Nagashima 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: 8399370Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition comprises, in terms of mass %; 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0.001-0.5% Li2O; 0.01-0.5% Na2O; 0.002-0.5% K2O; and 0-1.0%, excluding 0%, Cl.Type: GrantFiled: May 2, 2011Date of Patent: March 19, 2013Assignee: AvanStrate Inc.Inventors: Haruki Niida, Akihiro Koyama, Yukihito Nagashima, Satoshi Furusawa
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Publication number: 20120129679Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.Type: ApplicationFiled: January 31, 2012Publication date: May 24, 2012Applicant: AVANSTRATE INC.Inventors: Shoichi KISHIMOTO, Haruki NIIDA, Akihiro KOYAMA, Yukihito NAGASHIMA
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Patent number: 8156763Abstract: Provided is a method of producing a glass, including, in order to obtain an excellent refining effect: preparing a raw glass batch including: an antimony compound containing pentavalent antimony; and an oxidizing agent (a cerium oxide, a sulfate, a nitrate); and melting the raw glass batch. In preparing the raw glass batch, it is preferable that the antimony compound be premixed with the oxidizing agent. When the nitrate is used as the oxidizing agent, the raw glass batch is prepared so as to include the antimony compound in an amount of more than 0.5 parts by mass and at most 3 parts by mass, in terms of an amount of antimony pentoxide, per 100 parts by mass of a base glass composition expressed in terms of an amount of an oxide.Type: GrantFiled: November 13, 2006Date of Patent: April 17, 2012Assignee: AvanStrate, Inc.Inventors: Yukihito Nagashima, Kengo Maeda
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Patent number: 8129299Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10.25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.Type: GrantFiled: July 12, 2010Date of Patent: March 6, 2012Assignee: AvanStrate Inc.Inventors: Shoichi Kishimoto, Haruki Niida, Akihiro Koyama, Yukihito Nagashima
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Patent number: 8017537Abstract: The present invention provides a glass article using a glass composition including a base glass composition and colorants. The base glass composition includes, expressed in mass %: 65 to 80% of SiO2; 0 to 5% of Al2O3; 0 to 10% of MgO; 0 to 15% of CaO; 5 to 15% of MgO+CaO; 10 to 18% of Na2O; 0 to 5% of K2O; 10 to 20% of Na2O+K2O; and 0 to 5% of B2O3, and the colorants consist essentially of, expressed in mass %: 0.6% to 1.0% of T-Fe2O3; 0.026 to 0.8% of TiO2; 0 to 2.0% of CeO2; 0.01 to 0.03% of CoO; 0 to 0.0008% of Se; and 0.06 to 0.20% of NiO. The glass article has a grayish color tone, and has a visible light transmittance in a range of 15% to 40%, which is measured with the illuminant A at a thickness of 3.1 mm.Type: GrantFiled: October 31, 2006Date of Patent: September 13, 2011Assignee: Nippon Sheet Glass Company, LimitedInventors: Hiromitsu Seto, Akihiro Koyama, Yukihito Nagashima
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Publication number: 20110207594Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition comprises, in terms of mass %; 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0.001-0.5% Li2O; 0.01-0.5% Na2O; 0.002-0.5% K2O; and 0-1.Type: ApplicationFiled: May 2, 2011Publication date: August 25, 2011Applicant: AVANSTRATE INC.Inventors: Haruki NIIDA, Akihiro KOYAMA, Yukihito NAGASHIMA, Satoshi FURUSAWA
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Patent number: 7960301Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition comprises, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0.001-0.5% Li2O; 0.01-0.5% Na2O; 0.002-0.5% K2O; and 0-1.0%, excluding 0%, Cl.Type: GrantFiled: August 4, 2006Date of Patent: June 14, 2011Assignee: AvanStrate Inc.Inventors: Haruki Niida, Akihiro Koyama, Yukihito Nagashima, Satoshi Furusawa
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Publication number: 20100273634Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10.25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.Type: ApplicationFiled: July 12, 2010Publication date: October 28, 2010Applicant: AVANSTRATE INC.Inventors: Shoichi KISHIMOTO, Haruki NIIDA, Akihiro KOYAMA, Yukihito NAGASHIMA
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Patent number: 7820575Abstract: The present invention provides a near-infrared absorbent green glass composition which contains basic glass components and 0.6 to 1.3% total iron oxide amount in terms of Fe2O3 (T-Fe2O3), 0 to 2.0% CeO2 and, 300 ppm or less MnO expressed in units of mass and wherein a mass ratio (FeO ratio) of FeO converted into Fe2O3 relative to the T-Fe2O3 is from 0.21 to 0.35. Further the glass composition satisfies at least one of the following a) and b): a) when the glass composition is formed to have a thickness in the range of 1.3 to 2.Type: GrantFiled: December 24, 2004Date of Patent: October 26, 2010Assignee: Nippon Sheet Glass Company, LimitedInventors: Yukihito Nagashima, Hiromitsu Seto, Harunori Murakami, Hiroyuki Tanaka
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Patent number: 7786035Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.Type: GrantFiled: August 4, 2006Date of Patent: August 31, 2010Assignee: AvanStrate Inc.Inventors: Shoichi Kishimoto, Haruki Niida, Akihiro Koyama, Yukihito Nagashima
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Patent number: 7632767Abstract: A glass composition that has improved infrared absorptivity while preventing the visible light transmittance from decreasing excessively. The glass composition includes: the following components, expressed in mass %: 65<SiO2?75; 0?B2O3?5; 0?Al2O3?5; 0?MgO<2; 10<CaO?15; 0?SrO?10; 0?BaO?10; 0?Li2O?5; 10?Na2O?15; 0?K2O?5; and 0?TiO2?0.5, where 10<MgO+CaO+SrO+BaO?20 and 10?Na2O+K2O?17.5; MnO 0 to 300 mass ppm; and the following components as colorants, expressed in mass %: 0.4?T—Fe2O3?1.0, where T—Fe2O3 is total iron oxide expressed as Fe2O3; and 0?CeO2?2.0. The mass ratio of FeO expressed as Fe2O3 to T—Fe2O3 is 20 to 44%. The wavelength at which a minimum transmittance is obtained in a range of 550 to 1700 nm is at least 1065 nm. The transmittance that is obtained at a wavelength of 1650 nm is not higher than the transmittance that is obtained at a wavelength of 730 nm.Type: GrantFiled: March 15, 2006Date of Patent: December 15, 2009Assignee: Nippon Sheet Glass Company, LimitedInventors: Yukihito Nagashima, Harunori Murakami
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Publication number: 20090266111Abstract: Provided is a method of producing a glass, including, in order to obtain an excellent refining effect: preparing a raw glass batch including: an antimony compound containing pentavalent antimony; and an oxidizing agent (a cerium oxide, a sulfate, a nitrate); and melting the raw glass batch. In preparing the raw glass batch, it is preferable that the antimony compound be premixed with the oxidizing agent. When the nitrate is used as the oxidizing agent, the raw glass batch is prepared so as to include the antimony compound in an amount of more than 0.5 parts by mass and at most 3 parts by mass, in terms of an amount of antimony pentoxide, per 100 parts by mass of a base glass composition expressed in terms of an amount of an oxide.Type: ApplicationFiled: November 13, 2006Publication date: October 29, 2009Applicants: Nippon Sheet Glass Company, Limited, NH Techno Glass CorporationInventors: Yukihito Nagashima, Kengo Maeda
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Publication number: 20090181843Abstract: The present invention provides a glass article using a glass composition including a base glass composition and colorants. The base glass composition includes, expressed in mass %: 65 to 80% of SiO2; 0 to 5% of Al2O3; 0 to 10% of MgO; 0 to 15% of CaO; 5 to 15% of MgO+CaO; 10 to 18% of Na2O; 0 to 5% of K2O; 10 to 20% of Na2O+K2O; and 0 to 5% of B2O3, and the colorants consist essentially of, expressed in mass %: 0.6% to 1.0% of T-Fe2O3; 0.026 to 0.8% of TiO2; 0 to 2.0% of CeO2; 0.01 to 0.03% of CoO; 0 to 0.0008% of Se; and 0.06 to 0.20% of NiO. The glass article has a grayish color tone, and has a visible light transmittance in a range of 15% to 40%, which is measured with the illuminant A at a thickness of 3.1 mm.Type: ApplicationFiled: October 31, 2006Publication date: July 16, 2009Applicant: Nippon Sheet Glass Company, LimitedInventors: Hiromitsu Seto, Akihiro Koyama, Yukihito Nagashima
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Publication number: 20090143214Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition comprises, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0.001-0.5% Li2O; 0.01-0.5% Na2O; 0.002-0.5% K2O; and 0-1.Type: ApplicationFiled: August 4, 2006Publication date: June 4, 2009Applicant: Nippon Sheet Glass Company, LimitedInventors: Haruki Niida, Akihiro Koyama, Yukihito Nagashima, Satoshi Furusawa
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Publication number: 20090131238Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.Type: ApplicationFiled: August 4, 2006Publication date: May 21, 2009Applicant: Nippon Sheet Glass Company, LimitedInventors: Shoichi Kishimoto, Haruki Niida, Akihiro Koyama, Yukihito Nagashima
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Patent number: 7393802Abstract: An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein the glass has a turquoise blue or deep green color.Type: GrantFiled: March 16, 2004Date of Patent: July 1, 2008Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Hiromitsu Seto, Yukihito Nagashima, Isamu Kuroda, Shigekazu Yoshii
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Publication number: 20080090717Abstract: The present invention provides a glass composition in which a smaller amount of arsenic oxide or antimony oxide that has a heavy burden on the environment is used and fewer bubbles remain. This glass composition includes, in terms of mass %: 40 to 70% of SiO2, 5 to 20% of B2O3, 10 to 25% of Al2O3, 0 to 5% of MgO (up to and not including 5%), 0 to 20% of CaO, 0 to 20% of SrO, 0 to 10% of BaO, 0 to 1.5% of Li2O, 0 to 1.5% of Na2O, 0 to 1.5% of K2O, and 0 to 1.5% of Cl. The sum of the contents of Li2O, Na2O, and K2O is 0.05 to 1.5 mass %, and the content of K2O is equal to or larger than that of Na2O.Type: ApplicationFiled: December 15, 2005Publication date: April 17, 2008Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Yukihito Nagashima, Haruki Niida, Junji Kurachi, Akihiro Koyama, Hiromitsu Seto, Kazuhiro Yamamoto, Daisuke Miyabe, Yutaka Senshu
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Publication number: 20080026211Abstract: The present invention provides a near-infrared absorbent green glass composition which contains basic glass components and 0.6 to 1.3% total iron oxide amount in terms of Fe2O3 (T-Fe2O3), 0 to 2.0% CeO2 and, 300 ppm or less MnO expressed in units of mass and wherein a mass ratio (FeO ratio) of FeO converted into Fe2O3 relative to the T-Fe2O3 is from 0.21 to 0.35. Further the glass composition satisfies at least one of the following a) and b): a) when the glass composition is formed to have a thickness in the range of 1.3 to 2.Type: ApplicationFiled: December 24, 2004Publication date: January 31, 2008Applicant: Nippon Sheet Glass Company, LimitedInventors: Yukihito Nagashima, Hiromitsu Seto, Harunori Murakami, Hiroyuki Tanaka
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Patent number: 7250383Abstract: It is an object of the present invention to provide a clad glass composition for graded-index rod lens for covering, during manufacturing, a preform glass composition lens of a graded-index rod lens that does not include PbO, in which the composition substantially does not include PbO, and expressed in mol % includes SiO2: 45 to 65, Na2O: 3 to 30, K2O: 0 to 10, MgO: 0 to 15, BaO: 0 to 20, where Na2O+K2O: 3 to 35 and MgO+BaO: 0 to 25, and furthermore includes B2O3: 0 to 15, ZnO: 0 to 10, TiO2: 0 to 10, Y2O3: 0 to 7, ZrO2: 0 to 7, Nb2O5: 0 to 7, In2O3: 0 to 7, La2O3: 0 to 7, Ta2O5: 0 to 10, where B2O3+ZnO+TiO2+Y2O3+ZrO2+Nb2O5+In2O3+La2to 20, and a content of at least one of TiO2 and La2O3 is substantially 0 mol %.Type: GrantFiled: September 3, 2003Date of Patent: July 31, 2007Assignee: Nippon Sheet Glass Company, LimitedInventors: Teruhide Inoue, Kunihiro Nomiyama, Yoshikazu Toshikiyo, Yukihito Nagashima
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Publication number: 20060217257Abstract: A glass composition that has improved infrared absorptivity while preventing the visible light transmittance from decreasing excessively. The glass composition includes: the following components, expressed in mass %: 65<SiO2?75; 0?B2O3?5; 0?Al2O3?5; 0?MgO<2; 10<CaO?15; 0?SrO?10; 0?BaO?10; 0?Li2O?5; 10?Na2O?15; 0?K20?5; and 0?TiO2?0.5, where 10<MgO+CaO+SrO+BaO?20 and 10?Na2O+K2O?17.5; MnO 0 to 300 mass ppm; and the following components as colorants, expressed in mass %: 0.4?T—Fe2O3?1.0, where T—Fe2O3 is total iron oxide expressed as Fe2O3; and 0?CeO2?2.0. The mass ratio of FeO expressed as Fe2O3 to T—Fe2O3 is 20 to 44%. The wavelength at which a minimum transmittance is obtained in a range of 550 to 1700 nm is at least 1065 nm. The transmittance that is obtained at a wavelength of 1650 nm is not higher than the transmittance that is obtained at a wavelength of 730 nm.Type: ApplicationFiled: March 15, 2006Publication date: September 28, 2006Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Yukihito Nagashima, Harunori Murakami