Patents by Inventor Tadashi Kurita

Tadashi Kurita 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: 20230373849
    Abstract: A glass composition for glass fiber includes 50.00 to 61.00% by mass of SiO2, 16.00 to 27.00% by mass of B2O3, 7.00 to 14.00% by mass of Al2O3, 0.20 to 4.00% by mass of P2O5, 0.50 to 5.00% by mass of TiO2, 0.10 to 5.00% by mass of CaO, 0 to 4.00% by mass of MgO, and 0 to 2.00% by mass of F2 and Cl2 in total, with respect to the total amount of the glass composition for glass fiber, and the content S of SiO2, the content A of Al2O3, the content P of P2O5, the content T of TiO2, the content C of CaO, and the content M of MgO satisfy the following formula (1): 3.65?(S/A)2×(P×T)1/2/(C+M)3?8.25??(1).
    Type: Application
    Filed: February 9, 2022
    Publication date: November 23, 2023
    Inventors: Takanobu HOSOKAWA, Tadashi KURITA, Takashi NONAKA
  • Publication number: 20230373845
    Abstract: A glass composition includes 59.00 to 65.00% by mass of SiO2, 16.00 to 26.00% by mass of B2O3, 7.00 to 14.00% by mass of Al2O3, 0 to 5.00% by mass of CaO, 0 to 4.00% by mass of MgO, 0 to 6.00% by mass of SrO, 0.10 to 5.00% by mass of TiO2, 0 to 2.00% by mass of F2 and Cl2 in total, less than 0.20% by mass of P2O5, and less than 1.00% by mass of Na2O, K2O and Li2O in total, wherein the ratio of TiO2 to the total content of CaO, MgO, and SrO (TiO2/(CaO+MgO+SrO)) is from 0.66 to 4.00, and the content SI of SiO2 and the content A of Al2O3 satisfy the following formula (1): 1.00?1000×A/SI2?4.65 (1).
    Type: Application
    Filed: February 9, 2022
    Publication date: November 23, 2023
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Takanobu HOSOKAWA, Tadashi KURITA, Takashi NONAKA
  • Patent number: 11565966
    Abstract: Provided is a glass composition for glass fiber having a low dielectric constant and a low dielectric loss tangent, suppressing occurrence of phase separation, and reducing viscosity at high temperatures. The glass composition for glass fiber includes: SiO2 in the range of 52.0 to 59.5% by mass; B2O3 in the range of 17.5 to 25.5% by mass; Al2O3 in the range of 9.0 to 14.0% by mass; SrO in the range of 0.5 to 6.0% by mass; MgO in the range of 1.0 to 5.0% by mass; and CaO in the range of 1.0 to 5.0% by mass, and includes F2 and Cl2 in the range of 0.1 to 2.5% by mass in total, with respect to the total amount.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: January 31, 2023
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Takanobu Hosokawa, Hiroyuki Yabe, Tadashi Kurita, Takashi Nonaka
  • Patent number: 11059946
    Abstract: Provided is a glass fiber-reinforced resin molded article having high tensile strength and high impact strength in combination with a low dielectric constant and a low dissipation factor. The glass fiber-reinforced resin molded article contains: 10 to 90 mass % of a glass fiber; and 90 to 10 mass % of a resin based on the total amount of the glass fiber-reinforced resin molded article, wherein the glass fiber has composition containing: 52.0 to 57.0 mass % of SiO2; 13.0 to 17.0 mass % of Al2O3; 15.0 to 21.5 mass % of B2O3; 2.0 to 6.0 mass % of MgO; 2.0 to 6.0 mass % of CaO; 1.0 to 4.0 mass % of TiO2; and less than 1.5 mass % of F2, and the total amount of Li2O, Na2O, and K2O is less than 0.6 mass %, based on the total amount of the glass fiber, and the glass fiber has a number-average fiber length of 30 to 5000 ?m.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: July 13, 2021
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Akane Tsuchigane, Yuya Onodera, Yuta Takahashi, Tadashi Kurita, Tsunefumi Aizawa
  • Publication number: 20200199015
    Abstract: Provided is a glass composition for glass fiber having a low dielectric constant and a low dielectric loss tangent, suppressing occurrence of phase separation, and reducing viscosity at high temperatures. The glass composition for glass fiber includes: SiO2 in the range of 52.0 to 59.5% by mass; B2O3 in the range of 17.5 to 25.5% by mass; Al2O3 in the range of 9.0 to 14.0% by mass; SrO in the range of 0.5 to 6.0% by mass; MgO in the range of 1.0 to 5.0% by mass; and CaO in the range of 1.0 to 5.0% by mass, and includes F2 and Cl2 in the range of 0.1 to 2.5% by mass in total, with respect to the total amount.
    Type: Application
    Filed: July 20, 2018
    Publication date: June 25, 2020
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Takanobu HOSOKAWA, Hiroyuki YABE, Tadashi KURITA, Takashi NONAKA
  • Publication number: 20200079919
    Abstract: Provided is a glass fiber-reinforced resin molded article having high tensile strength and high impact strength in combination with a low dielectric constant and a low dissipation factor. The glass fiber-reinforced resin molded article contains: 10 to 90 mass % of a glass fiber; and 90 to 10 mass % of a resin based on the total amount of the glass fiber-reinforced resin molded article, wherein the glass fiber has composition containing: 52.0 to 57.0 mass % of SiO2; 13.0 to 17.0 mass % of Al2O3; 15.0 to 21.5 mass % of B2O3; 2.0 to 6.0 mass % of MgO; 2.0 to 6.0 mass % of CaO; 1.0 to 4.0 mass % of TiO2; and less than 1.5 mass % of F2, and the total amount of Li2O, Na2O, and K2O is less than 0.6 mass %, based on the total amount of the glass fiber, and the glass fiber has a number-average fiber length of 30 to 5000 ?m.
    Type: Application
    Filed: June 29, 2017
    Publication date: March 12, 2020
    Inventors: Akane TSUCHIGANE, Yuya ONODERA, Yuta TAKAHASHI, Tadashi KURITA, Tsunefumi AIZAWA
  • Patent number: 7558462
    Abstract: A reproduction apparatus and a content information reproduction method for simultaneous reproduction from two recording media and instantaneous audio switching. A frequency-division section and another frequency-division section each frequency-divide a master clock provided by an oscillation section at a predetermined frequency-division ratio so as to generate clocks. A hard disk uses the clocks coming from the frequency division section as a basis to reproduce audio/visual AV) data, and an optical disk uses the clocks coming from the frequency-division section as a basis to reproduce the AV data. In response to a user's instruction, when audio switching is performed for output to a speaker, a clock selection section switches a clock to be supplied to a D/A converter into the clock provided by the frequency-division section, or the clock provided by the frequency-division section.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: July 7, 2009
    Assignee: Sony Corporation
    Inventor: Tadashi Kurita
  • Publication number: 20060120243
    Abstract: The present invention relates to a reproduction apparatus and a content information reproduction method capable of simultaneous reproduction from any two recording media and instantaneous audio switching. A frequency-division section 4A and another frequency-division section 4B each frequency-divide a master clock provided by an oscillation section 3 at a predetermined frequency-division ratio so as to generate clocks. A hard disk 5A uses the clocks coming from the frequency division section 4A as a basis to reproduce AV data, and an optical disk 5B uses the clocks coming from the frequency-division section 4B as a basis to reproduce the AV data. In response to a user's instruction, when audio switching is performed for output to a speaker 30, a clock selection section 6 switches a clock to be supplied to a D/A converter 17 into the clock provided by the frequency-division section 4A, or the clock provided by the frequency-division section 4B.
    Type: Application
    Filed: July 1, 2003
    Publication date: June 8, 2006
    Inventor: Tadashi Kurita
  • Patent number: 5787226
    Abstract: In a radio-integrated video tape recorder (VTR) which comprises a radio tuner section for receiving radio broadcast programs and for outputting an audio signal corresponding to a selected one of the received programs, a character generator for producing a video signal, a VTR section for recording the output audio signal from the radio tuner section and the video signal from the character generator in related portions of a recording tape, and a microprocessor for controlling the radio tuner section, character generator and VTR; such microprocessor is operative, in a radio broadcast program recording mode, to provide situation data to the character generator which determines the video signal recorded by the VTR section and which includes time data and receiving data identifying the selected one of the radio broadcast programs to which the audio signal recorded in the related portion of the tape corresponds.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: July 28, 1998
    Assignee: Sony Corporation
    Inventors: Chieko Miyake, Tadashi Kurita, Yoshihiro Ohta
  • Patent number: 5313651
    Abstract: A receiver apparatus detects a received level from an AGC voltage relative to a received signal. For measuring the received level (a level outputted from an antenna), noise levels at predetermined frequencies higher and lower than the broadcast frequency band and a received signal level upon receiving a broadcast at an arbitrary channel are measured, and a received level corresponding to C/N at the received channel is calculated from the three measured values, thereby eliminating received level calculation differences among channels occurring when the received level is calculated on the basis of the AGC voltage.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: May 17, 1994
    Assignee: Sony Corporation
    Inventor: Tadashi Kurita
  • Patent number: 5251035
    Abstract: A satellite broadcasting tuner with which satellite broadcasting of any channel can be enjoyed only by a channel selecting operation thereof whether or not broadcasting of the channel involves special signal processing.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: October 5, 1993
    Assignee: Sony Corporation
    Inventors: Tadashi Kurita, Osamu Yamakami
  • Patent number: 5130803
    Abstract: A satellite broadcasting tuner by use of which high-definition television broadcasting of a satellite broadcasting channel can be received in a high quality. The satellite broadcasting tuner receives a satellite broadcasting channel selected by a channel selecting microcomputer, and when frame synchronizing data of the high-definition television system are detected from within audio data of the received channel, the reception frequency for the channel is fixed to receive the high-definition television broadcasting, but when no such frame synchronizing data are detected, an ordinary automatic fine tuning function operates to receive the satellite broadcasting channel.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: July 14, 1992
    Assignee: Sony Corporation
    Inventors: Tadashi Kurita, Koji Hirosawa
  • Patent number: D873823
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: January 28, 2020
    Assignee: SK-Electronics Co., Ltd.
    Inventor: Tadashi Kurita