Patents by Inventor Takaharu Miyazaki

Takaharu Miyazaki 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).

  • Patent number: 11840477
    Abstract: The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40?SiO2?60, 25?B2O3?45, 0<Al2O3?18, 0<R2O?5, and 0?RO?12, and satisfies at least one of: i) SiO2+B2O3?80 and SiO2+B2O3+Al2O3?99.9; and ii) SiO2+B2O3?78, SiO2+B2O3+Al2O3?99.9, and 0<RO<10. Another glass composition provided includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3?75 and SiO2+B2O3+Al2O3<97, where R2O=Li2O+Na2O+K2O and RO=MgO+CaO+SrO.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: December 12, 2023
    Assignees: NIPPON SHEET GLASS COMPANY, LIMITED, UNITIKA LTD., UNITIKA GLASS FIBER CO., LTD.
    Inventors: Aya Nakamura, Hidetoshi Fukuchi, Junji Kurachi, Riku Sawai, Takaharu Miyazaki, Yoshito Nawa, Kohji Hattori
  • Patent number: 11773009
    Abstract: The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40?SiO2?60, 25?B2O3?45, 0<Al2O3?18, 0<R2O?5, and 0?RO?12, and satisfies at least one of: i) SiO2+B2O3?80 and SiO2+B2O3+Al2O3?99.9; and ii) SiO2+B2O3?78, SiO2+B2O3+Al2O3?99.9, and 0<RO<10. Another glass composition provided includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3?75 and SiO2+B2O3+Al2O3<97, where R2O?Li2O+Na2O+K2O and RO?MgO+CaO+SrO.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: October 3, 2023
    Assignees: NIPPON SHEET GLASS COMPANY, LIMITED, UNITIKA LTD., UNITIKA GLASS FIBER CO., LTD.
    Inventors: Aya Nakamura, Hidetoshi Fukuchi, Junji Kurachi, Riku Sawai, Takaharu Miyazaki, Yoshito Nawa, Kohji Hattori
  • Publication number: 20220402811
    Abstract: The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40?SiO2?60, 25?B2O3?45, 0<Al2O3?18, 0<R2O?5, and 0?RO?12, and satisfies at least one of: i) SiO2+B2O3?80 and SiO2+B2O3+Al2O3?99.9; and ii) SiO2+B2O3?78, SiO2+B2O3+Al2O3?99.9, and 0<RO<10. Another glass composition provided includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3?75 and SiO2+B2O3+Al2O3<97, where R2O=Li2O+Na2O+K2O and RO=MgO+CaO+SrO.
    Type: Application
    Filed: August 3, 2022
    Publication date: December 22, 2022
    Inventors: Aya NAKAMURA, Hidetoshi FUKUCHI, Junji KURACHI, Riku SAWAI, Takaharu MIYAZAKI, Yoshito NAWA, Kohji HATTORI
  • Publication number: 20220371945
    Abstract: The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40?SiO2?60, 25?B2O3?45, 0<Al2O3?18, 0<R2O?5, and 0?RO?12, and satisfies at least one of: i) SiO2+B2O3?80 and SiO2+B2O3+Al2O3?99.9; and ii) SiO2+B2O3?78, SiO2+B2O3+Al2O3?99.9, and 0<RO<10. Another glass composition provided includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3?75 and SiO2+B2O3+Al2O3<97, where R2O=Li2O+Na2O+K2O and RO=MgO+CaO+SrO.
    Type: Application
    Filed: August 3, 2022
    Publication date: November 24, 2022
    Inventors: Aya NAKAMURA, Hidetoshi FUKUCHI, Junji KURACHI, Riku SAWAI, Takaharu MIYAZAKI, Yoshito NAWA, Kohji HATTORI
  • Publication number: 20220324751
    Abstract: The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40?SiO2?60, 25?B2O3?45, 0?Al2O3?18, 0<R2O?5, and 0?RO?12, and satisfies at least one of: i) SiO2+B2O3?80 and SiO2+B2O3+Al2O3?99.9; and ii) SiO2+B2O3?78, SiO2+B2O3+Al2O3?99.9, and 0<RO<10. Another glass composition provided includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3?75 and SiO2+B2O3+Al2O3<97, where R2O?Li2O+Na2O+K2O and RO?MgO+CaO+SrO.
    Type: Application
    Filed: June 19, 2020
    Publication date: October 13, 2022
    Inventors: Aya NAKAMURA, Hidetoshi FUKUCHI, Junji KURACHI, Riku SAWAI, Takaharu MIYAZAKI, Yoshito NAWA, Kohji HATTORI
  • Patent number: 11174191
    Abstract: A glass composition of the present disclosure includes, in wt %, 50?SiO2?56, 20?B2O3?30, 10?Al2O3?20, 3.5?MgO+CaO?10, and 0?R2O?1.0, further includes Fe2O3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. R is at least one element selected from Li, Na, and K. The glass composition of the present disclosure is a low-permittivity glass composition with which the occurrence of fiber breakage during fiber forming can be reduced even when glass fibers to be formed have a small fiber diameter, and the occurrence of defects such as fiber breakage and fluffing during processing of the glass fibers can be reduced.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 16, 2021
    Assignees: NIPPON SHEET GLASS COMPANY, LIMITED, UNITIKA LTD., UNITIKA GLASS FIBER CO., LTD.
    Inventors: Yoshiyuki Inaka, Takaharu Miyazaki, Koji Hayashi, Riku Sawai, Yoshito Nawa, Daisuke Nishinaka, Tomoki Sekida
  • Patent number: 10622905
    Abstract: [Object] To realize a DC-DC converter that can reduce switching loss when zero voltage switching is not achieved. [Solution] When starting second control in conjunction with first control, a control unit (10) performs reduction of predetermined phase difference and increase of phase offset at the same time. A smallest value of output power of the DC-DC converter (CON1) performing reduction of the predetermined phase difference is lower than power at which a primary-side reactor (6) is saturated by current flowing through the primary-side reactor (6) under the first control and lower than power at which a secondary-side reactor (7) is saturated by current flowing through the secondary-side reactor (7) under the first control, at a desired output voltage under the first control.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 14, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takaharu Miyazaki
  • Publication number: 20200087196
    Abstract: A glass composition of the present disclosure includes, in wt %, 50?SiO2?56, 20?B2O3?30, 10?Al2O3?20, 3.5?MgO+CaO?10, and 0?R2O?1.0, further includes Fe2O3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. R is at least one element selected from Li, Na, and K. The glass composition of the present disclosure is a low-permittivity glass composition with which the occurrence of fiber breakage during fiber forming can be reduced even when glass fibers to be formed have a small fiber diameter, and the occurrence of defects such as fiber breakage and fluffing during processing of the glass fibers can be reduced.
    Type: Application
    Filed: May 18, 2018
    Publication date: March 19, 2020
    Inventors: Yoshiyuki INAKA, Takaharu MIYAZAKI, Koji HAYASHI, Riku SAWAI, Yoshito NAWA, Daisuke NISHINAKA, Tomoki SEKIDA
  • Publication number: 20200021198
    Abstract: [Object] To realize a DC-DC converter that can reduce switching loss when zero voltage switching is not achieved. [Solution] When starting second control in conjunction with first control, a control unit (10) performs reduction of predetermined phase difference and increase of phase offset at the same time. A smallest value of output power of the DC-DC converter (CON1) performing reduction of the predetermined phase difference is lower than power at which a primary-side reactor (6) is saturated by current flowing through the primary-side reactor (6) under the first control and lower than power at which a secondary-side reactor (7) is saturated by current flowing through the secondary-side reactor (7) under the first control, at a desired output voltage under the first control.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 16, 2020
    Inventor: TAKAHARU MIYAZAKI
  • Publication number: 20190144329
    Abstract: A glass composition of the present disclosure includes, in wt %, 50?SiO2?54, 25?B2O3?30, 12?Al2O3?15, 0.5?MgO?1.9, 3.0?CaO?5.5, 0?ZnO?3.5, 0.1?Li2O?0.5, and 0.1?Na2O?0.3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. The glass composition of the present disclosure has a low permittivity. The use of this glass composition can reduce the occurrence of devitrification and the inclusion of bubbles in glass fibers to be formed or in a shaped glass material to be formed even when the glass fibers have a small fiber diameter or the shaped glass material has a small thickness.
    Type: Application
    Filed: November 1, 2016
    Publication date: May 16, 2019
    Applicants: Nippon Sheet Glass Company, Limited, Unitika Ltd., Unitika Glass Fiber Co., Ltd.
    Inventors: Yoshiyuki INAKA, Takaharu MIYAZAKI, Yoshito NAWA, Daisuke NISHINAKA, Tomoki SEKIDA
  • Patent number: 6927966
    Abstract: A laminated ceramic electronic component, for example, monolithic ceramic capacitor, in which the delamination does not occur during baking and having superior thermal shock and moisture load resistance characteristics is provided. A conductive paste, used with advantage to form an internal electrode of the laminated ceramic electronic component, and a laminated ceramic electronic component using the conductive paste is provided. The conductive paste is composed of a conductive powder which is primarily Ni, an organic vehicle, a compound A containing at least one of Mg and Ca and which is an organic acid metal salt, oxide powder, metal organic complex salt and/or an alkoxide, and a compound B, having a hydrolyzable reactive group containing at least one of Ti and Zr, which adheres to the surface of the conductive powder.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: August 9, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takaharu Miyazaki, Tsuyoshi Yamana
  • Patent number: 6849145
    Abstract: A ceramic green sheet having good surface roughness and few pinhole defects even when producing a thin ceramic green sheet is stably produced, to permit efficiently and securely manufacturing a multilayer ceramic electronic part in which deterioration of its life due to unevenness of interfaces between internal electrodes and ceramic layers and the occurrence of structural defects, such as delamination, bending of an electrode portion, etc, in a multilayer thin film to be suppressed. A dry sheet obtained by forming ceramic slurry to a sheet on a carrier film is smoothed by pressing using a plate press, a hydrostatic press or a calender roll under predetermined temperature and pressure conditions to improve the surface smoothness of the ceramic green sheet independently of the particle diameter of the ceramic and its dispersibility. An electrode paste is coated in a predetermine pattern on the thus-produced ceramic green sheet to form a sheet provided with an electrode.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: February 1, 2005
    Assignee: Murata Manufacturing Co. Ltd
    Inventors: Tsuyoshi Yamana, Takaharu Miyazaki
  • Patent number: 6692598
    Abstract: A ceramic green sheet having good surface roughness and few pinhole defects even when producing a thin ceramic green sheet is stably produced, to permit efficiently and securely manufacturing a multilayer ceramic electronic part in which deterioration of its life due to unevenness of interfaces between internal electrodes and ceramic layers and the occurrence of structural defects, such as delamination, bending of an electrode portion, etc., in a multilayer thin film to be suppressed. A dry sheet obtained by forming ceramic slurry to a sheet on a carrier film is smoothed by pressing using a plate press, a hydrostatic press or a calender roll under predetermined temperature and pressure conditions to improve the surface smoothness of the ceramic green sheet independently of the particle diameter of the ceramic and its dispersibility. An electrode paste is coated in a predetermine pattern on the thus-produced ceramic green sheet to form a sheet provided with an electrode.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: February 17, 2004
    Assignee: Murata Manufacturing Co. Ltd
    Inventors: Tsuyoshi Yamana, Takaharu Miyazaki
  • Publication number: 20040009333
    Abstract: A laminated ceramic electronic component, for example, monolithic ceramic capacitor, in which the delamination does not occur during baking and having superior thermal shock and moisture load resistance characteristics is provided. A conductive paste, used with advantage to form an internal electrode of the laminated ceramic electronic component, and a laminated ceramic electronic component using the conductive paste is provided. The conductive paste is composed of a conductive powder which is primarily Ni, an organic vehicle, a compound A containing at least one of Mg and Ca and which is an organic acid metal salt, oxide powder, metal organic complex salt and/or an alkoxide, and a compound B, having a hydrolyzable reactive group containing at least one of Ti and Zr, which adheres to the surface of the conductive powder.
    Type: Application
    Filed: January 27, 2003
    Publication date: January 15, 2004
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Takaharu Miyazaki, Tsuyoshi Yamana
  • Patent number: 6673272
    Abstract: A laminated ceramic electronic component, for example, monolithic ceramic capacitor, in which the delamination does not occur during baking and having superior thermal shock and moisture load resistance characteristics is provided. A conductive paste, used with advantage to form an internal electrode of the laminated ceramic electronic component, and a laminated ceramic electronic component using the conductive paste is provided. The conductive paste is composed of a conductive powder which is primarily Ni, an organic vehicle, a compound A containing at least one of Mg and Ca and which is an organic acid metal salt, oxide powder, metal organic complex salt and/or an alkoxide, and a compound B, having a hydrolyzable reactive group containing at least one of Ti and Zr, which adheres to the surface of the conductive powder.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: January 6, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takaharu Miyazaki, Tsuyoshi Yamana
  • Publication number: 20030230374
    Abstract: A ceramic green sheet having good surface roughness and few pinhole defects even when producing a thin ceramic green sheet is stably produced, to permit efficiently and securely manufacturing a multilayer ceramic electronic part in which deterioration of its life due to unevenness of interfaces between internal electrodes and ceramic layers and the occurrence of structural defects, such as delamination, bending of an electrode portion, etc, in a multilayer thin film to be suppressed. A dry sheet obtained by forming ceramic slurry to a sheet on a carrier film is smoothed by pressing using a plate press, a hydrostatic press or a calender roll under predetermined temperature and pressure conditions to improve the surface smoothness of the ceramic green sheet independently of the particle diameter of the ceramic and its dispersibility. An electrode paste is coated in a predetermine pattern on the thus-produced ceramic green sheet to form a sheet provided with an electrode.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 18, 2003
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Tuyoshi Yamana, Takaharu Miyazaki
  • Publication number: 20030064210
    Abstract: A laminated ceramic electronic component, for example, monolithic ceramic capacitor, in which the delamination does not occur during baking and having superior thermal shock and moisture load resistance characteristics is provided. A conductive paste, used with advantage to form an internal electrode of the laminated ceramic electronic component, and a laminated ceramic electronic component using the conductive paste is provided. The conductive paste is composed of a conductive powder which is primarily Ni, an organic vehicle, a compound A containing at least one of Mg and Ca and which is an organic acid metal salt, oxide powder, metal organic complex salt and/or an alkoxide, and a compound B, having a hydrolyzable reactive group containing at least one of Ti and Zr, which adheres to the surface of the conductive powder.
    Type: Application
    Filed: July 5, 2001
    Publication date: April 3, 2003
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Takaharu Miyazaki, Tsuyoshi Yamana
  • Patent number: 6478882
    Abstract: A laminated ceramic electronic component, such as a laminated ceramic capacitor, having superior heat shock resistance and humidity loading resistance is provided, in which no delamination occurs during a firing step. A conductive paste advantageously used for forming internal electrodes and a laminated ceramic electronic component using the conductive paste are provided. The conductive paste is a conductive powder primarily composed of Ni; an organic vehicle; a compound A which is at least one of an organic acid metal salt, an organic metal complex salt and an alkoxide, and which contains at least one of Mg, Ca and Ba; and a hydrolyzed compound B containing at least one of Al and Si; wherein the hydrolyzed compound B is adhered to the surface of the conductive powder.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: November 12, 2002
    Assignee: Murata Manufacturing Co. Ltd.
    Inventors: Takaharu Miyazaki, Tsuyoshi Yamana
  • Publication number: 20020124910
    Abstract: A laminated ceramic electronic component, such as a laminated ceramic capacitor, having superior heat shock resistance and humidity loading resistance is provided, in which no delamination occurs during a firing step. A conductive paste advantageously used for forming internal electrodes and a laminated ceramic electronic component using the conductive paste are provided. The conductive paste is a conductive powder primarily composed of Ni; an organic vehicle; a compound A which is at least one of an organic acid metal salt, an organic metal complex salt and an alkoxide, and which contains at least one of Mg, Ca and Ba; and a hydrolyzed compound B containing at least one of Al and Si; wherein the hydrolyzed compound B is adhered to the surface of the conductive powder.
    Type: Application
    Filed: June 27, 2001
    Publication date: September 12, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Takaharu Miyazaki, Tsuyoshi Yamana
  • Patent number: 6442813
    Abstract: A monolithic ceramic capacitor includes a plurality of dielectric ceramic layers, a plurality of inner electrodes formed between the dielectric ceramic layers in such a manner that one end of each inner electrode is exposed out of either end of the dielectric ceramic layers, and outer electrodes electrically connected with the exposed inner electrodes; in which the inner electrodes each are made of a base metal, and Si oxide layers or layers comprising an Si oxide and at lest one component that constitutes said dielectric ceramic layers and said inner electrodes are formed adjacent to the inner electrodes. The capacitor has excellent thermal impact resistance and wet load resistance characteristics. A producing method includes firing a green sheet laminate including a metal inner electrode at an oxygen partial pressure of about said equilibrium oxygen partial pressure of the metal to the metal oxide.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: September 3, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Norihiko Sakamoto, Harunobu Sano, Takaharu Miyazaki