Patents by Inventor Tsutomu Sakai
Tsutomu Sakai 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: 7325525Abstract: A piston includes: in a cross-section that is perpendicular to a piston pin and that includes a center axis of the piston, a great thickness-reduction portion provided to attain a thin thickness as stress applied to the piston on a side without a cavity is small, and a small thickness-reduction portion provided to attain a thick thickness as stress applied to the piston on a side with the cavity is great; and in a cross-section that is perpendicular to the piston pin and that does not include a center axis of the piston, a great thickness-reduction portion provided on a side without the cavity to attain a thin thickness to achieve balance of the piston, and a small thickness-reduction portion provided on a side with the cavity.Type: GrantFiled: February 27, 2006Date of Patent: February 5, 2008Assignees: Toyota Jidosha Kabushiki Kaisha, Art Metal Mfg. Co., Ltd.Inventors: Haruhiko Saito, Tsutomu Sakai
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Patent number: 7309669Abstract: A dielectric material comprising: a glass powder constituted of a glass comprising Si, B and an alkali metal element, the glass being amorphous in sintering at a temperature of 1,050° C. or lower; and a ceramic filler comprising at least one member of SiO2, Al2O3 and 3Al2O3.2SiO2, and an alkali metal element, wherein when a total sum of Si converted into SiO2, B converted into B2O3 and the alkali metal element converted into A2O, wherein A represents an alkali metal element, all of which are contained in the glass, is 100 mole %, the content of the alkali metal element converted into A2O, which is contained in the glass, is 0.5 mole % or less; and when a total sum of at least one member of SiO2, Al2O3 and 3Al2O3.2SiO2, and the alkali metal element converted into A2O, all of which are contained in the ceramic filler, is 100 mole %, a content of the alkali metal element converted into A2O, which is contained in the ceramic filler, is 0.5 mole % or less.Type: GrantFiled: June 24, 2005Date of Patent: December 18, 2007Assignee: NGK Spark Plug Co., Ltd.Inventors: Hiroshi Sumi, Masashi Suzumura, Tsutomu Sakai, Hidetoshi Mizutani, Manabu Sato
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Publication number: 20070104988Abstract: A coolant comprising a nonaqueous base. A phase change material may be dispersed or a highly heat conductive material may be dispersed or dissolved in the nonaqueous base. A nonaqueous coolant for a fuel cell excellent in heat transfer characteristics is provided as a coolant for fuel cell stacks.Type: ApplicationFiled: January 11, 2005Publication date: May 10, 2007Applicant: Toyota Jidosha Kabushiki KaishaInventors: Mikito Nishii, Hiroyuki Arai, Tsutomu Sakai, Mitsuru Kondo
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Publication number: 20070093377Abstract: The present invention provides a metal nanocolloidal liquid characterized by containing a dispersion medium and nanocolloidal metal particles, and containing substantially no protective colloid-forming agent; and a method for producing a metal-on-carrier, characterized by including causing nanocolloidal metal particles to be carried on a carrier by use of the metal nanocolloidal liquid. According to the production method, nanocolloidal metal particles can be efficiently caused to be carried on a carrier, and a metal-on-carrier which is useful in a variety of fields can be industrially advantageously produced.Type: ApplicationFiled: December 15, 2004Publication date: April 26, 2007Inventors: Kiyoshi Miyashita, Masamichi Kezuka, Tetsuro Yoshii, Ryohei Ogawa, Akihiro Hishinuma, Tsutomu Sakai, Toyo Yano
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Publication number: 20060221938Abstract: A VoIP adapter module for a VoIP phone system switches the phone connection from a broadband connection to a wired connection when a power outage or a broadband disconnection is detected. The switch is accomplished by establishing a connection from a telephone connected to an RJ11 port on the module to a wired channel connected to a backup RJ11 port on the module. Detection for power outage is by comparing the device voltage with a reference voltage, and detection for broadband connection is by sending out a PING packet and waiting to see if a return packet is received.Type: ApplicationFiled: April 1, 2005Publication date: October 5, 2006Inventors: Frank Lin, Tsutomu Sakai
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Publication number: 20060207548Abstract: A piston includes: in a cross-section that is perpendicular to a piston pin and that includes a center axis of the piston, a great thickness-reduction portion provided to attain a thin thickness as stress applied to the piston on a side without a cavity is small, and a small thickness-reduction portion provided to attain a thick thickness as stress applied to the piston on a side with the cavity is great; and in a cross-section that is perpendicular to the piston pin and that does not include a center axis of the piston, a great thickness-reduction portion provided on a side without the cavity to attain a thin thickness to achieve balance of the piston, and a small thickness-reduction portion provided on a side with the cavity.Type: ApplicationFiled: February 27, 2006Publication date: September 21, 2006Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ART METAL MFG. CO., LTD.Inventors: Haruhiko Saito, Tsutomu Sakai
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Publication number: 20060187865Abstract: An auto-configuration algorithm for establishing a wireless connection between an access point (AP) and a wireless station includes reducing the power that the AP transmits or broadcasts configuration setting information, resulting in possible reception of the configuration setting only within a small area of the network.Type: ApplicationFiled: January 30, 2005Publication date: August 24, 2006Inventor: Tsutomu Sakai
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Publication number: 20060144189Abstract: A method for forming colloidal particles by boiling a solution containing a metal salt and a reducing agent; and a method for preparing a colloidal solution wherein the concentration of the metal salt in the solution is 1×10?4 mol/L or more and less than 4×10?4 mol/L; the equivalent concentration of the reducing agent is four times or more and 20 times or less the equivalent concentration of the metal salt; and the reaction time is 60 minutes or more and 300 minutes or less. A carrier wherein colloidal particles are fixed on the surface of a substrate by applying the colloidal solution prepared by the above-described method. Methods for manufacturing a fuel cell cathode, a fuel cell anode, and a low temperature oxidation catalyst wherein a colloidal solution prepared in the state wherein a solution containing a metal salt and a reducing agent is boiled to remove dissolved oxygen is applied to a substrate and colloidal particles are fixed on the substrate.Type: ApplicationFiled: June 16, 2003Publication date: July 6, 2006Applicant: Nippon Sheet Glass Co.Inventors: Kiyoshi Miyashita, Akihiro Hishinuma, Tsutomu Sakai, Toyo Okubo, Hiroshi Shingu, Yohei Iseki
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Publication number: 20060083930Abstract: A dielectric material comprising: a glass powder constituted of a glass comprising Si, B and an alkali metal element, the glass being amorphous in sintering at a temperature of 1,050° C. or lower; and a ceramic filler comprising at least one member of SiO2, Al2O3 and 3Al2O3.2SiO2, and an alkali metal element, wherein when a total sum of Si converted into SiO2, B converted into B2O3 and the alkali metal element converted into A2O, wherein A represents an alkali metal element, all of which are contained in the glass, is 100 mole %, the content of the alkali metal element converted into A2O, which is contained in the glass, is 0.5 mole % or less; and when a total sum of at least one member of SiO2, Al2O3 and 3Al2O3.2SiO2, and the alkali metal element converted into A2O, all of which are contained in the ceramic filler, is 100 mole %, a content of the alkali metal element converted into A2O, which is contained in the ceramic filler, is 0.5 mole % or less.Type: ApplicationFiled: June 24, 2005Publication date: April 20, 2006Inventors: Hiroshi Sumi, Masashi Suzumura, Tsutomu Sakai, Hidetoshi Mizutani, Manabu Sato
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Patent number: 6983129Abstract: A first diode is connected in series to a transmission port, and a low pass filter having transmission band and reception band as passing band is disposed between the first diode and an antenna port. A second diode is connected between the reception port and the ground. A phase shifting function is provided between the first diode and a reception port, having reception band as passing band, so that the impedance as seen from the first diode to the reception port side is almost open in the transmission band when a current flows in the second diode.Type: GrantFiled: August 2, 2001Date of Patent: January 3, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yuki Satoh, Tsutomu Sakai
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Patent number: 6960672Abstract: The present invention relates to a process for preparing an alkyl ester of a fatty acid wherein a transesterification reaction is carried out between a fat or oil and an alcohol in the presence of a catalyst comprising a composite metal oxide having a perovskite structure; and a process for preparing an alkyl ester of a fatty acid wherein a transesterification reaction is carried out between a fat or oil and an alcohol in the presence of a catalyst comprising at least one member selected from the group consisting of oxides, hydroxides and carbonates of alkaline earth metals is used as the catalyst, with the alcohol made into a supercritical state or subcritical state. According to the present invention, the alkyl ester of a fatty acid which can be effectively utilized as a diesel fuel oil or the like can be prepared at high efficiency and on an industrial scale mainly from triglyceride contained in a fat or oil, especially a waste oil.Type: GrantFiled: March 28, 2002Date of Patent: November 1, 2005Assignee: Revo International Inc.Inventors: Masahide Nakayama, Keiichi Tsuto, Takenori Hirano, Tsutomu Sakai, Ayato Kawashima, Hirohisa Kitagawa
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Publication number: 20050217714Abstract: A thermoelectric module 2 constituting an exhaust heat recovery system has p-type semiconductors 3p and n-type semiconductors 3n which both constitute thermoelements 3 for converting a difference in temperature between high temperature side end portions 21 and low temperature side end portions 22 into electricity. The thermoelectric module 2 is constructed such that the n-type semiconductors 3n and the p-type semiconductors 3p are stacked alternately along a longitudinal direction of an exhaust pipe portion 20 with heat insulating support portions 41, 42 being interposed therebetween, and the n-type semiconductors 3n and the p-type semiconductors 3p are electrically connected to each other via electrode members at the high temperature side end portions 21 and the low temperature side end portions 22.Type: ApplicationFiled: April 1, 2005Publication date: October 6, 2005Applicant: DENSO CORPORATIONInventors: Yoshiaki Nishijima, Katsuhide Akimoto, Yurio Nomura, Tatsuyoshi Sasaki, Keiji Tsukamoto, Tsutomu Sakai
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Patent number: 6930588Abstract: A key opening apparatus includes an antenna which receives a first signal of slower transmission speed and a second signal of higher transmission speed, a receiving section, a filter, a comparator, and a decoder, and another set of filter, comparator and decoder. The receiving section receives and processes the first and second signals in common, and the two decoders process the signals using one microprocessor before outputting the result to an output terminal.Type: GrantFiled: December 23, 2002Date of Patent: August 16, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuhiko Sueoka, Tsutomu Sakai
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Publication number: 20040087809Abstract: The present invention relates to a process for preparing an alkyl ester of a fatty acid wherein a transesterification reaction is carried out between a fat or oil and an alcohol in the presence of a catalyst comprising a composite metal oxide having a perovskite structure; and a process for preparing an alkyl ester of a fatty acid wherein a transesterification reaction is carried out between a fat or oil and an alcohol in the presence of a catalyst comprising at least one member selected from the group consisting of oxides, hydroxides and carbonates of alkaline earth metals is used as the catalyst, with the alcohol made into a supercritical state or subcritical state. According to the present invention, the alkyl ester of a fatty acid which can be effectively utilized as a diesel fuel oil or the like can be prepared at high efficiency and on an industrial scale mainly from triglyceride contained in a fat or oil, especially a waste oil.Type: ApplicationFiled: September 29, 2003Publication date: May 6, 2004Inventors: Masahide Nakayama, Keiichi Tsuto, Takenori Hirano, Tsutomu Sakai, Ayato Kawashima, Hirohisa Kitagawa
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Publication number: 20030217263Abstract: A system and method are provided for secure digital transmissions. The method comprises: accepting a digital message; compressing the digital message into a file; generating a pseudo-public-key in response to the public-key and a server device identifier; using the pseudo-public-key from a public/private-key pair to encrypt the first n bytes of the file; and, transmitting the encrypted file. In some aspects of the method, accepting a digital message includes accepting a digital message from a server device, such as a digital camera, having a serial number. Then, generating the pseudo-public-key includes using an algorithm to combine the public-key and server device serial number information. In other aspects, accepting a digital message includes accepting a digital message from a server device having a user-selectable digital code setting. Then, generating the pseudo-public-key includes using an algorithm to combine the public-key, the digital code setting, and/or the serial number.Type: ApplicationFiled: March 21, 2002Publication date: November 20, 2003Inventor: Tsutomu Sakai
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Publication number: 20030170436Abstract: A dielectric material comprising: a glass powder constituted of a glass comprising Si, B and an alkali metal element, the glass being amorphous in sintering at a temperature of 1,050° C. or lower; and a ceramic filler comprising at least one member of SiO2, Al2O3 and 3Al2O3.2Si2, and an alkali metal element, wherein when a total sum of Si converted into SiO2, B converted into B2O3 and the alkali metal element converted into A2O, wherein A represents an alkali metal element, all of which are contained in the glass, is 100 mole %, the content of the alkali metal element converted into A2O, which is contained in the glass, is 0.5 mole % or less; and when a total sum of at least one member of SiO2, Al2O3 and 3Al2O3.2SiO2, and the alkali metal element converted into A2O, all of which are contained in the ceramic filler, is 100 mole %, a content of the alkali metal element converted into A2O, which is contained in the ceramic filler, is 0.5 mole % or less.Type: ApplicationFiled: December 23, 2002Publication date: September 11, 2003Applicant: NGK SPARK PLUG CO., LTD.Inventors: Hiroshi Sumi, Masashi Suzumura, Tsutomu Sakai, Hidetoshi Mizutani, Manabu Sato
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Patent number: 6602623Abstract: A low-temperature firing ceramic composition contains Sr2MgSi2O7 crystals forming a major crystal phase of the composition. This composition can be produced, for example, by a process including the steps of (a) mixing together a silica powder, a magnesia powder and a strontium oxide powder to obtain a powder mixture; (b) subjecting the powder mixture to a calcination at a temperature of 1,000-1,200° C. to obtain a calcination product containing Sr2MgSi2O7 crystals; (c) mixing the calcination product with alumina powder, boron oxide powder, lithium oxide powder, binder and ethanol to obtain a powder mixture; (d) granulating the powder mixture; (e) shaping the resulting granules into a green body; (f) compacting the green body by a hydrostatic pressing (CIP); and (g) firing the resulting compact in an atmosphere of air, thereby obtaining the composition.Type: GrantFiled: October 26, 2000Date of Patent: August 5, 2003Assignee: NGK Spark Plug Co., Ltd.Inventors: Hidetoshi Mizutani, Tsutomu Sakai, Masashi Suzumura, Satoshi Iio
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Publication number: 20030132832Abstract: A key opening apparatus includes an antenna which receives a first signal of slower transmission speed and a second signal of higher transmission speed, a receiving section, a filter, a comparator, and a decoder, and another set of filter, comparator and decoder. The receiving section receives and processes the first and second signals in common, and the two decoders process the signals using one microprocessor before outputting the result to an output terminal.Type: ApplicationFiled: December 23, 2002Publication date: July 17, 2003Inventors: Kazuhiko Sueoka, Tsutomu Sakai
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Publication number: 20020025785Abstract: A first diode is connected in series to a transmission port, and a low pass filter having transmission band and reception band as passing band is disposed between the first diode and an antenna port. A second diode is connected between the reception port and the ground. A phase shifting function is provided between the first diode and a reception port, having reception band as passing band, so that the impedance as seen from the first diode to the reception port side is almost open in the transmission band when a current flows in the second diode.Type: ApplicationFiled: August 2, 2001Publication date: February 28, 2002Inventors: Yuki Satoh, Tsutomu Sakai
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Patent number: 6037042Abstract: A label sheet comprises a substrate and an adhesive layer formed by applying an adhesive agent to a surface of the substrate, said adhesive layer being formed only on a limited area of the surface. With such an arrangement and if it is part of a larger label sheet or a multi-layer structure of label sheets, it can be stripped off easily from the remaining part. If perforations are formed in adhesive free areas, they do not produce any projections of the applied adhesive agent so that the final product can be handled with ease. Additionally, by forming an adhesive-repellent layer on the outer surface with an ink type adhesive-repellent agent, the overall manufacturing process can be simplified and the product is adapted to making by hand.Type: GrantFiled: July 11, 1997Date of Patent: March 14, 2000Assignee: Toppan Moore Co., Ltd.Inventors: Takahiro Kato, Yoshiyki Takemura, Tsutomu Sakai, Takeshi Hiwatari, Kenji Takahashi