Patents by Inventor Naomi Matsumoto
Naomi Matsumoto 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: 11774649Abstract: An optical element includes a glass body including a colored layer provided inside the glass body and positioned at an optical function surface of the optical element. An optical apparatus including the optical element is also provided.Type: GrantFiled: April 22, 2021Date of Patent: October 3, 2023Assignee: HOYA CORPORATIONInventors: Toshiki Nakamura, Yutaka Takakubo, Yoshitake Tanno, Yasushi Tsutsumi, Naomi Matsumoto
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Publication number: 20230265006Abstract: To provide glass including a colored layer and a manufacturing method thereof. Provided is glass containing one or more glass components selected from the group consisting of Ti ions, Nb ions, W ions, and Bi ions. The glass includes a colored layer having an arbitrary shape.Type: ApplicationFiled: April 8, 2021Publication date: August 24, 2023Applicant: HOYA CORPORATIONInventors: Yoshitake TANNO, Naomi MATSUMOTO
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Patent number: 11656456Abstract: An optical element including a glass body is provided. The optical element includes a colored layer provided inside the glass body and positioned outside an effective aperture of the optical element. Coloring of the colored layer is a reduction pigment occurring in a glass component of the glass body. The colored layer suppresses occurrence of stray light and obtains sufficient light-shielding properties, so that a superior image quality can be achieved.Type: GrantFiled: August 12, 2020Date of Patent: May 23, 2023Assignee: HOYA CORPORATIONInventors: Toshiki Nakamura, Masaru Eguchi, Yutaka Takakubo, Yoshitake Tanno, Naomi Matsumoto
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Publication number: 20220250968Abstract: Provided is oxide glass in which a content of P5+ is 7 to 43 cation %, a content of Nb ions is 10 to 21 cation %, a content of Li+ is 20 cation % or more, a total content of Nb ions and Li+ is 48 to 70 cation %, a content of Bi ions is more than 0 cation % and is equal to or less than 6 cation %, a content of Ba2+ is 5 cation % or less, a content of Zr4+ is 2 cation % or less, a total content of Ti ions and W ions is 5 cation % or less, and a cation ratio of the content of Li+ to a total content of Li+, Na+, and K+[Li+/(Li++Na++K+)] is 0.5 or more.Type: ApplicationFiled: January 28, 2022Publication date: August 11, 2022Applicant: HOYA CORPORATIONInventors: Koichi SATO, Yoshitake TANNO, Naomi MATSUMOTO
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Publication number: 20210333449Abstract: An optical element includes a glass body including a colored layer provided inside the glass body and positioned at an optical function surface of the optical element. An optical apparatus including the optical element is also provided.Type: ApplicationFiled: April 22, 2021Publication date: October 28, 2021Applicant: HOYA CORPORATIONInventors: Toshiki NAKAMURA, Yutaka TAKAKUBO, Yoshitake TANNO, Yasushi TSUTSUMI, Naomi MATSUMOTO
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Publication number: 20210048665Abstract: An optical element includes a glass body including a colored layer provided inside the glass body and positioned outside an effective aperture of the optical element. An optical apparatus including the optical element is also provided.Type: ApplicationFiled: August 12, 2020Publication date: February 18, 2021Applicant: HOYA CORPORATIONInventors: Toshiki NAKAMURA, Masaru EGUCHI, Yutaka TAKAKUBO, Yoshitake TANNO, Naomi MATSUMOTO
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Patent number: 9007878Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which includes essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth metal oxides selected from the group consisting of MgO, CaO, SrO, and BaO, wherein a molar ratio of a content of MgO to a combined content of MgO, CaO, SrO, and BaO (MgO/(MgO+CaO+SrO+BaO)) is equal to or greater than 0.80, and which has a Young's modulus of equal to or greater than 80 GPa, and a glass transition temperature of equal to or greater than 620° C.Type: GrantFiled: July 25, 2014Date of Patent: April 14, 2015Assignee: Hoya CorporationInventors: Naomi Matsumoto, Kazuaki Hashimoto
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Patent number: 8907622Abstract: An AC/DC converter is configured to perform voltage conversion on power supplied from an AC power supply and supply the power to an auxiliary load during external charging in which a main power storage device is charged by the AC power supply. An auxiliary power storage device stores power to be supplied to the auxiliary load. A diode permits discharging of the auxiliary power storage device while preventing charging of the auxiliary power storage device during the external charging. A current sensor detects discharging of the auxiliary power storage device. A controller adjusts an output voltage of the AC/DC converter while confirming whether or not the auxiliary power storage device discharges, based on a detection value of the current sensor.Type: GrantFiled: September 25, 2009Date of Patent: December 9, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Itagaki, Wanleng Ang, Yoshinobu Sugiyama, Yoshikazu Kataoka, Naomi Matsumoto
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Publication number: 20140334276Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which includes essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth metal oxides selected from the group consisting of MgO, CaO, SrO, and BaO, wherein a molar ratio of a content of MgO to a combined content of MgO, CaO, SrO, and BaO (MgO/(MgO+CaO+SrO+BaO)) is equal to or greater than 0.80, and which has a Young's modulus of equal to or greater than 80 GPa, and a glass transition temperature of equal to or greater than 620° C.Type: ApplicationFiled: July 25, 2014Publication date: November 13, 2014Applicant: HOYA CORPORATIONInventors: Naomi MATSUMOTO, Kazuaki Hashimoto
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Patent number: 8885447Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which comprises essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth metal oxides selected from the group consisting of MgO, CaO, SrO, and BaO wherein a molar ratio of a content of CaO to a combined content of MgO, CaO, SrO, and BaO (CaO/(MgO+CaO+SrO+BaO)) is equal to or less than 0.20, and which has a glass transition temperature of equal to or higher than 650° C.Type: GrantFiled: March 15, 2013Date of Patent: November 11, 2014Assignee: Hoya CorporationInventors: Naomi Matsumoto, Kazuaki Hashimoto
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Patent number: 8852745Abstract: An aspect of the present invention relates to an optical glass, which comprises, denoted as weight percent, 2 to 37 percent of SiO2, 0 to 25 percent of B2O3, 0 to 10 percent of GeO2, 18 to 55 percent of a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO, and 27 to 55 percent of a combined content of TiO2, Nb2O5, and WO3, wherein the weight ratio of SiO2 content relative to a combined content of SiO2 and B2O3 ranges from 0.1 to 1, a weight ratio of the Li2O content to a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO ranges from 0 to 0.4, and a weight ratio of TiO2 content relative to a combined content of TiO2, Nb2O5, and WO3 ranges from 0.35 to 1, with a refractive index nd of 1.860 to 1.990 and an Abbé number ?d of 21 to 29.Type: GrantFiled: October 12, 2012Date of Patent: October 7, 2014Assignee: Hoya CorporationInventors: Kosuke Yamaguchi, Naomi Matsumoto
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Patent number: 8836272Abstract: A vehicle includes a PCU controlling electric power supplied to a motor, a first power storage device, a second power storage device, an ECU, a charger, system main relays SMR1 to SMR4, SMRA, SMRB, and charging relays CR1 to CR4. The first power storage device is formed such that a first module and a second module which are separately disposed are connected in series through SMRA and SMRB. The first power storage device is connected to the PCU through SMR1 and SMR2. The second power storage device is connected to the PCU through SMR3 and SMR4. The charger has a capacitor that is connected to the first power storage device through CR1 and CR2 and also connected to the second power storage device through CR3 and CR4. When charging is completed, the ECU turns on CR1, CR2, SMR1, and SMR2, and turns off SMRA, SMRB, CR3, CR4, SMR3, and SMR4.Type: GrantFiled: February 26, 2010Date of Patent: September 16, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinobu Sugiyama, Wanleng Ang, Kenji Itagaki, Yoshikazu Kataoka, Naomi Matsumoto
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Patent number: 8824248Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which includes essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth metal oxides selected from the group consisting of MgO, CaO, SrO, and BaO, wherein a molar ratio of a content of MgO to a combined content of MgO, CaO, SrO, and BaO (MgO/(MgO+CaO+SrO+BaO)) is equal to or greater than 0.80, and which has a Young's modulus of equal to or greater than 80 GPa, and a glass transition temperature of equal to or greater than 620° C.Type: GrantFiled: May 9, 2013Date of Patent: September 2, 2014Assignee: Hoya CorporationInventors: Naomi Matsumoto, Kazuaki Hashimoto
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Publication number: 20140106174Abstract: An aspect of the present invention relates to an optical glass, which comprises, denoted as weight percent, 2 to 37 percent of SiO2, 0 to 25 percent of B2O3, 0 to 10 percent of GeO2, 18 to 55 percent of a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO, and 27 to 55 percent of a combined content of TiO2, Nb2O5, and WO3, wherein the weight ratio of SiO2 content relative to a combined content of SiO2 and B2O3 ranges from 0.1 to 1, a weight ratio of the Li2O content to a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO ranges from 0 to 0.4, and a weight ratio of TiO2 content relative to a combined content of TiO2, Nb2O5, and WO3 ranges from 0.35 to 1, with a refractive index nd of 1.860 to 1.990 and an Abbé number ?d of 21 to 29.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: HOYA CORPORATIONInventors: Kosuke YAMAGUCHI, Naomi MATSUMOTO
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Patent number: 8652660Abstract: An aspect of the present invention relates to a glass substrate for a magnetic recording medium, which is comprised of glass with a glass transition temperature of equal to or greater than 600° C., an average coefficient of linear expansion at 100 to 300° C. of equal to or greater than 70×10?7/° C., a Young's modulus of equal to or greater than 81 GPa, a specific modulus of elasticity of equal to or greater than 30 MNm/kg, and a fracture toughness value of equal to or greater than 0.9 MPa·m1/2.Type: GrantFiled: December 20, 2011Date of Patent: February 18, 2014Assignee: Hoya CorporationInventors: Hideki Isono, Kinobu Osakabe, Katsuyuki Iwata, Mikio Ikenishi, Naomi Matsumoto
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Publication number: 20140036644Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which includes essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth metal oxides selected from the group consisting of MgO, CaO, SrO, and BaO, wherein a molar ratio of a content of MgO to a combined content of MgO, CaO, SrO, and BaO (MgO/(MgO+CaO+SrO+BaO)) is equal to or greater than 0.80, and which has a Young's modulus of equal to or greater than 80 GPa, and a glass transition temperature of equal to or greater than 620° C.Type: ApplicationFiled: May 9, 2013Publication date: February 6, 2014Applicant: HOYA CORPORATIONInventors: Naomi MATSUMOTO, Kazuaki HASHIMOTO
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Patent number: 8603653Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which comprises, denoted as molar percentages, 50 to 75 percent of SiO2, 0 to 5 percent of Al2O3, 0 to 3 percent of Li2O, 0 to 5 percent of ZnO, a total of Na2O and K2O of 3 to 15 percent, a total of MgO, CaO, SrO, and BaO of 14 to 35 percent, a total of ZrO2, TiO2, La2O3, Y2O3, Yb2O3, Ta2O5, Nb2O5, and HfO2 of 2 to 9 percent, with a molar ratio of {(MgO+CaO)/(MgO+CaO+SrO+BaO)} falling within a range of 0.85 to 1, and a molar ratio of {Al2O3/(MgO+CaO)} falling within a range of 0 to 0.30.Type: GrantFiled: August 10, 2010Date of Patent: December 10, 2013Assignee: Hoya CorporationInventors: Naomi Matsumoto, Yoichi Hachitani, Kinobu Osakabe
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Patent number: 8394516Abstract: The present invention relates to recording glass substrates molar percentages: 56-75 SiO2, 1-11 Al2O2, more than 0-4 Li2O, 1-15 Na2O. more than 0 less than 3 K2O, no BaO. total Li2O, Na2O and K2O 6-15, (Li2O Na2O) less than 0.50, {K2O/(Li2O, Na2O and K2O)} equal or less than 0.13, total MgO, CaO and SrO 10-30, MgO and CaO 10-30, {(MgO+CaO)/(MgO+CaO+SrO)} equal or more than 0.86, alkali oxides to alkaline earth oxides equal to or more than 0.50. total ZrO2, TiO2, Y2O3, La2O3, Gd2O3, Nb2O5, and Ta2O5 more than 0 equal to or less than 10, molar ratio {(ZrO2, TiO2, Y2O3, La2O3, Gd2O3, Nb2O5, and Ta2O5)/Al2O2 equal or more than 0.40, Tg equal to or higher than 600° C., average coefficient linear expansion equal or higher than 70×10?7/°C. at 100-300° C. and Young's modulus equal to or higher than 80 GPa.Type: GrantFiled: November 8, 2010Date of Patent: March 12, 2013Assignee: Hoya CorporationInventors: Naomi Matsumoto, Kinobu Osakabe, Yoichi Hachitani
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Publication number: 20120313584Abstract: A vehicle includes a PCU controlling electric power supplied to a motor, a first power storage device, a second power storage device, an ECU, a charger, system main relays SMR1 to SMR4, SMRA, SMRB, and charging relays CR1 to CR4. The first power storage device is formed such that a first module and a second module which are separately disposed are connected in series through SMRA and SMRB. The first power storage device is connected to the PCU through SMR1 and SMR2. The second power storage device is connected to the PCU through SMR3 and SMR4. The charger has a capacitor that is connected to the first power storage device through CR1 and CR2 and also connected to the second power storage device through CR3 and CR4. When charging is completed, the ECU turns on CR1, CR2, SMR1, and SMR2, and turns off SMRA, SMRB, CR3, CR4, SMR3, and SMR4.Type: ApplicationFiled: February 26, 2010Publication date: December 13, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshinobu Sugiyama, Wanleng Ang, Kenji Itagaki, Yoshikazu Kataoka, Naomi Matsumoto
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Publication number: 20120188663Abstract: An aspect of the present invention relates to a glass substrate for a magnetic recording medium, which is comprised of glass with a glass transition temperature of equal to or greater than 600° C., an average coefficient of linear expansion at 100 to 300° C. of equal to or greater than 70×10?7/° C., a Young's modulus of equal to or greater than 81 GPa, a specific modulus of elasticity of equal to or greater than 30 MNm/kg, and a fracture toughness value of equal to or greater than 0.9 MPa·m1/2.Type: ApplicationFiled: December 20, 2011Publication date: July 26, 2012Applicant: HOYA CORPORATIONInventors: Hideki ISONO, Kinobu OSAKABE, Katsuyuki IWATA, Mikio IKENISHI, Naomi MATSUMOTO