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).
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Publication number: 20230373849Abstract: 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: ApplicationFiled: February 9, 2022Publication date: November 23, 2023Inventors: Takanobu HOSOKAWA, Tadashi KURITA, Takashi NONAKA
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Publication number: 20230373845Abstract: 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: ApplicationFiled: February 9, 2022Publication date: November 23, 2023Applicant: NITTO BOSEKI CO., LTD.Inventors: Takanobu HOSOKAWA, Tadashi KURITA, Takashi NONAKA
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Patent number: 11565966Abstract: 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: GrantFiled: July 20, 2018Date of Patent: January 31, 2023Assignee: Nitto Boseki Co., Ltd.Inventors: Takanobu Hosokawa, Hiroyuki Yabe, Tadashi Kurita, Takashi Nonaka
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Patent number: 11059946Abstract: 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: GrantFiled: June 29, 2017Date of Patent: July 13, 2021Assignee: Nitto Boseki Co., Ltd.Inventors: Akane Tsuchigane, Yuya Onodera, Yuta Takahashi, Tadashi Kurita, Tsunefumi Aizawa
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Publication number: 20200199015Abstract: 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: ApplicationFiled: July 20, 2018Publication date: June 25, 2020Applicant: NITTO BOSEKI CO., LTD.Inventors: Takanobu HOSOKAWA, Hiroyuki YABE, Tadashi KURITA, Takashi NONAKA
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Publication number: 20200079919Abstract: 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: ApplicationFiled: June 29, 2017Publication date: March 12, 2020Inventors: Akane TSUCHIGANE, Yuya ONODERA, Yuta TAKAHASHI, Tadashi KURITA, Tsunefumi AIZAWA
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Patent number: 7558462Abstract: 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: GrantFiled: July 1, 2003Date of Patent: July 7, 2009Assignee: Sony CorporationInventor: Tadashi Kurita
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Publication number: 20060120243Abstract: 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: ApplicationFiled: July 1, 2003Publication date: June 8, 2006Inventor: Tadashi Kurita
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Patent number: 5787226Abstract: 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: GrantFiled: December 18, 1995Date of Patent: July 28, 1998Assignee: Sony CorporationInventors: Chieko Miyake, Tadashi Kurita, Yoshihiro Ohta
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Patent number: 5313651Abstract: 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: GrantFiled: August 1, 1991Date of Patent: May 17, 1994Assignee: Sony CorporationInventor: Tadashi Kurita
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Patent number: 5251035Abstract: 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: GrantFiled: August 13, 1991Date of Patent: October 5, 1993Assignee: Sony CorporationInventors: Tadashi Kurita, Osamu Yamakami
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Patent number: 5130803Abstract: 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: GrantFiled: August 13, 1991Date of Patent: July 14, 1992Assignee: Sony CorporationInventors: Tadashi Kurita, Koji Hirosawa
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Patent number: D873823Type: GrantFiled: March 27, 2018Date of Patent: January 28, 2020Assignee: SK-Electronics Co., Ltd.Inventor: Tadashi Kurita