Patents by Inventor Takashi Amano
Takashi Amano 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: 6494169Abstract: An evaporator which is small, light and whose activating time is short. The evaporator has an atomizer for atomizing a fluid being supplied into a conduit for the fluid to be heated in a plate type heat exchanger. To produce the evaporator, a metal plate is bent in a U shape, a heat exchanger module unit is produced by connecting a flow blocking member to one end of the U-shaped plate; a first interval maintaining member is attached to an outside surface of each of the plates; a second interval maintaining member is attached to an outside surface of each of the plates; and a plurality of said heat exchanger modules is arranged in a piled parallel relationship, with the first and second interval maintaining members maintaining a predetermined interval between the plates.Type: GrantFiled: May 22, 2000Date of Patent: December 17, 2002Assignee: Aisin Seiki Kabushiki KaishaInventors: Osamu Tsubouchi, Hiroshi Sugiura, Takashi Amano
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Publication number: 20020142737Abstract: A cellular phone includes two antennas, namely, a first antenna made as a rod antenna and a second antenna made as a helical antenna. A circuit board is housed in the casing of the cellular phone. The circuit board has an extended board portion which is projected upward from the upper edge and which corresponds in position to the antennas. An impedance matching circuit, which is made as a folded wiring pattern, and a feeding pad are formed on the extended board portion of the circuit board.Type: ApplicationFiled: March 27, 2002Publication date: October 3, 2002Inventors: Takashi Amano, Norimichi Chiba, Hiromichi Suzuki, Hisao Iwasaki
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Publication number: 20020086646Abstract: A flexible substrate having a meandering antenna element and a matching circuit formed thereon is wound within an antenna cap and mounted on a terminal body. A rod-like antenna is arranged extensible within the flexible substrate. If the rod-like antenna is withdrawn, a linear antenna element is coupled by a capacitive coupling with the matching circuit formed on the flexible substrate. Also, if the rod-like antenna is returned into the terminal body, the capacitive coupling between the linear antenna element and the matching circuit is released, and the meandering antenna element is coupled by a capacitive coupling with the matching circuit on the flexible substrate.Type: ApplicationFiled: December 28, 2001Publication date: July 4, 2002Inventors: Takashi Amano, Norimichi Chiba, Hisao Iwaski, Hiromichi Suzuki
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Publication number: 20020065118Abstract: A radio set comprises an antenna which is a &lgr;/2 monopole antenna capacitively coupled to the radio circuit on a circuit substrate by way of a capacitor and powered by the circuit. A ground pattern is formed on the circuit substrate in a region of about &lgr;/2 at the side of the antenna as viewed in the axial direction of the antenna and another ground pattern is formed in the remaining region of about &lgr;/2 and electrically connected to the ground pattern by way of an inductor. The inductance of the inductor is so selected that the phase of the electric current flowing between the ground pattern and the ground pattern is advanced by 180° at the operating frequency of the wavelength &lgr;.Type: ApplicationFiled: November 29, 2001Publication date: May 30, 2002Inventors: Norimichi Chiba, Takashi Amano
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Publication number: 20010023178Abstract: A antenna of a mobile station is composed of a first antenna section having a helical section and a first contact and a rod-like second antenna section coupled at its one end to the first contact and having a second contact at the other end. When the second antenna section is housed in the casing, the first contact comes to face the internal surface of a feeding terminal with the result that it is capacitive-coupled with a matching circuit. When the second antenna section is pulled out of the casing, the second contact comes in direct contact with the feeding terminal with the result that it is directly connected to the matching circuit. Thereby, the band of resonant frequencies when the antenna is housed in the casing is widened and the antenna gain when the antenna is pulled out of the casing is improved.Type: ApplicationFiled: December 19, 2000Publication date: September 20, 2001Inventors: Takashi Amano, Norimichi Chiba, Hisao Iwasaki, Shuichi Sekine, Noriaki Odachi, Hiroyuki Dai
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Patent number: 6280829Abstract: A ceramic composition is provided with a glass based material including SiO2, Al2O3, B2O3, and at least one selected from a group of Cao and MgO, and particles dispersed in the glass based material. The particles includes CaSiO3 or MgSiO3 as a main component. A sintered state of the ceramic composition has an anti-bending strength of 1500 kg/cm2 or higher.Type: GrantFiled: January 20, 2000Date of Patent: August 28, 2001Assignee: Taiyo Yuden Co., Ltd.Inventors: Keizo Kawamura, Takashi Amano, Tetsuyuki Suzuki
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Patent number: 6225958Abstract: A multifrequency antenna, which may be used as a built-in antenna of a small and thin radio communication terminal, such as a mobile telephone, is able to receive radio waves of multifrequency bands without enlarging the shape thereof. The antenna is structured using a main mode resonance frequency and a high-order mode resonance frequency of a single-frequency plane antenna with a short-circuit plate. Specifically, a radiator conductor plate in an optional shape is arranged on a ground plate, and the radiator conductor plate is connected to the ground plate via the short-circuit plate. Power is supplied to the radiator conductor plate from a power-feeding source via a feeder cable. In the radiator conductor plate, a cut portion for shifting the high-order mode resonance frequency to the location at a predetermined distance from the short-circuit plate is formed, and the high-order mode resonance frequency is shifted into a desired band by this cut portion.Type: GrantFiled: September 27, 1999Date of Patent: May 1, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Amano, Hisao Iwasaki, Norimichi Chiba
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Patent number: 6219820Abstract: In a design of the printed circuit board design device, a signal wire name is affixed to each wiring of a circuit, thereby making it quite easy to go through confirmation works after the design works are thoroughly accomplished. The present invention aims at improving efficiency of works for affixing the signal wire name. For this purpose, the signal wire names are input for each desired area of the circuit. By taking full advantage of overlap of the area concerned, the signal wire names connected in serial form are affixed to one wiring. The candidates of the signal wire names to be affixed are tabulated as a list. After the signal wire names are affixed to each wiring of the circuit, the wiring can be retrieved and shown in visible display. In this case too, the candidates of the signal wire names to be retrieved can be tabulated as a list.Type: GrantFiled: February 9, 1998Date of Patent: April 17, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Norimichi Chiba, Takashi Amano, Satoshi Arai, Manabu Ishibe, Mikio Hayashihara
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Patent number: 6195048Abstract: A multifrequency inverted F-type antenna which can receive muntifirequency band radio waves without the enlargement of its shape. A cut-out part (12b) is formed in an emission conductor (12) one end of which is connected to a short-circuit plate (13) planted in a ground conductor (11) and which has a feeding point (12a) to form on the emission conductor (12) a first emission conductor (12-1) and a second emission conductor (12-2) which resonate at respective frequency bands different from each other. By this construction the radio waves of two different frequency bands, i.e. a first frequency band determined by the shape of the first emission conductor (12-1) and a second frequency band determined by the shape of the second emission conductor (12-2), can be received.Type: GrantFiled: July 29, 1999Date of Patent: February 27, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Norimichi Chiba, Takashi Amano, Hisao Iwasaki
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Patent number: 6084649Abstract: A tristable liquid crystal display device comprises (a) first and second opposed substrates, at least one bearing an alignment coating and each bearing at least one electrode so as to define one or a plurality of pixels; (b) a tilted smectic or induced tilted smectic liquid crystal composition disposed between the substrates; and (c) a pair of orthogonally disposed polarizers, each having a polarization axis, one polarization axis being aligned with the zero field optical axis of a tilted smectic or induced tilted smectic mesophase of the liquid crystal composition; wherein the substrates are disposed so as to provide an alignment of the liquid crystal composition, which comprises (i) at least one chiral liquid crystal compound; and (ii) at least one achiral liquid crystal compound that can be represented by the following formula:R--M--N--(P).sub.a --OCH.sub.2 R.sub.f (I)where R, M, N, P, a and R.sub.f are describe herein; wherein the liquid crystal composition exhibits tristable switching.Type: GrantFiled: August 10, 1998Date of Patent: July 4, 2000Assignee: 3M Innovative Properties CompanyInventors: Takashi Amano, Michael P. Keyes, Steven J. Martin, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad
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Patent number: 6057007Abstract: A tristable liquid crystal display device comprises (a) first and second opposed substrates, at least one bearing an alignment coating and each bearing at least one electrode so as to define one or a plurality of pixels; (b) a tilted smectic or induced tilted smectic liquid crystal composition disposed between the substrates; and (c) a pair of orthogonally disposed polarizers, each having a polarization axis, one polarization axis being aligned with the zero field optical axis of a tilted smectic or induced tilted smectic mesophase of the liquid crystal composition; wherein the substrates are disposed so as to provide an alignment of the liquid crystal composition, the composition comprising at least one chiral liquid crystal compound that can be represented by the following formula:R--M--N--(P).sub.b --OCH.sub.2 C*HF--CH.sub.2 O(CH.sub.2).sub.a R.sub.Type: GrantFiled: August 10, 1998Date of Patent: May 2, 2000Assignee: 3M Innovative Properties CompanyInventors: Takashi Amano, Michael P. Keyes, Steven J. Martin, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad
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Patent number: 6028778Abstract: In a power supply circuit, a rectification circuit is coupled to a partial smoothing circuit, and an inverting circuit. The rectification circuit includes a rectifier coupled to a primary capacitor. The partial smoothing circuit includes a first, second, and third diode coupled together with the third diode in reverse polarity with the first and second diodes. The partial smoothing circuit also includes a series combination of a choke coil and a smoothing capacitor disposed in parallel with the second diode. A diode extends from the partial smoothing circuit to the inverting circuit. In one embodiment, the inverting circuit includes a main capacitor in parallel with a combination of a winding and an auxiliary capacitor. A switching means is coupled to the inverting circuit and the rectification circuit.Type: GrantFiled: April 2, 1998Date of Patent: February 22, 2000Assignee: Kabushiki Kaisha TECInventor: Takashi Amano
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Patent number: 5956655Abstract: A portable communication device capable of realizing an improved portability and an improved maneuverability at the same time. A portable communication device, includes an input unit having a plurality of input keys; a display unit having a plurality of display regions in correspondence to the input keys, for displaying names of functions assigned to the input keys in an arrangement corresponding to a spatial arrangement of the input keys; and a communication unit for making a communication by transmitting and receiving communication data according to a user's input entered by operating the input keys.Type: GrantFiled: March 15, 1996Date of Patent: September 21, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Yasuo Suzuki, Takashi Amano, Yukio Mori, Shinji Watanabe, Tomiaki Ishihara, Hiroshi Horiguchi
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Patent number: 5864087Abstract: A thermoelectric device is provided which is good in terms of responsibility to heat, by which a relatively large electric power can be produced, which is good in terms of durability, and which can be manufactured at reduced cost. The thermoelectric device includes a substrate having a thickness of 2.0 mm or less, and a thick-film type thermoelectric material formed on the substrate, and having a thickness of from 0.01 mm to 1.0 mm. The thick-film type thermoelectric material is covered with a glassy coating. By the coating, the thick-film type thermoelectric material is inhibited from coming off, and from deteriorating oxidatively.Type: GrantFiled: June 30, 1997Date of Patent: January 26, 1999Assignee: Technova Inc.Inventors: Takashi Amano, Naoki Kamiya, Makoto Okabayashi
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Patent number: 5547598Abstract: A thermoelectric semiconductor material comprises Si crystal and crystal of metal silicide selected from the group consisting of Fe, Co, Cr, Mn and Ni. It is preferable that the metal silicide is .beta.-FeSi.sub.2. Moreover, the thermoelectric semiconductor material further contains at least one element selected from the group consisting of Vb, VIb, IIIb, VIII, VIIa and VIa in the atomic periodic table as an additive. This element can be used as a dopant. Furthermore, since both the phase of the Si crystal and the phase of the crystal of the metal silicide are changed to be an n-type or a p-type, a thermoelectric characteristics are improved.Type: GrantFiled: August 2, 1994Date of Patent: August 20, 1996Assignee: Technova, Inc.Inventors: Takashi Amano, Makoto Okabayashi
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Patent number: 5539051Abstract: There are disclosed a resin composition for coating which comprises a mixture of(i) a non-aqueous dispersion type resin containing(A) a vinyl polymer soluble in an organic solvent mainly comprising an aliphatic hydrocarbon, and(B) a vinyl polymer particle which is insoluble in the organic solvent and obtained by polymerizing a polymerizable unsaturated compound in the organic solvent using the vinyl polymer (A) as a dispersant, and(ii) a solvent type resin of(C) a vinyl polymer having a silyl group represented by the formula (I) which is soluble in the organic solvent: ##STR1## wherein R.sup.1 represents an alkyl group, an aryl group or an aralkyl group, X represents a halogen atom, an alkoxy group, an acyloxy group or a hydroxy group, and k is an integer of 1 to 3,and a paint containing the same.Type: GrantFiled: October 15, 1993Date of Patent: July 23, 1996Assignee: Hitachi Chemical Company Co., Ltd.Inventors: Kuniaki Satou, Tsutomu Mamiya, Takashi Amano, Akira Hironaka
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Patent number: 5484490Abstract: A P-type thermoelectric material consists essentially of iron disilicide, metallic manganese and metallic aluminium dissolved in or alloyed with the iron disilicide, and silicon oxide and/or aluminum oxide present in the iron disilicide. The manganese is contained in an amount of from 1.67 to 4.1 atomic % with respect to a sum of atoms of iron and silicon constituting the iron disilicide, the metallic manganese and the metallic aluminum taken as 100 atomic %, and the metallic aluminum contained in an amount of from 1.33 to 3.33 atomic % with respect thereto, and a sum of the metallic manganese and the metallic aluminum in an amount of from 4.0 to 5.34 atomic % with respect thereto. The P-type thermoelectric material having such a composition produces a thermoelectromotive force equal to or greater than those of the conventional P-type thermoelectric materials comprised of iron disilicide, and it exhibits a mean resistivity equal to or smaller than that of the N-type thermoelectric material.Type: GrantFiled: February 23, 1994Date of Patent: January 16, 1996Assignees: Technova Inc., National Research Institute for MetalsInventors: Shigeki Tokita, Makoto Okabayashi, Takashi Amano, Isao Nishida
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Patent number: 5159490Abstract: A mirror comprises a first layer being of a transparency, a second layer mounted on the first layer and being in the form of a translucent metal thin film with a thickness of less than 350.ANG., a third layer mounted on the second layer and being in the form of a transparent oxide or fluoride of a metal and a fourth layer mounted on the third layer and being in the form of a thin metal to be used as a reflecting member.Type: GrantFiled: June 3, 1991Date of Patent: October 27, 1992Assignee: Aisin Seiki Kabushiki KaishaInventors: Takashi Amano, Tetsuo Oka, Junichi Mita, Masami Ishii
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Patent number: 5066560Abstract: A toner for electrophotography produced by polymerizing a monomer dispersed by emulsification in the presence of a colorant and/or a magnetic powder, followed by coagulation is excellent in properties, particularly in cleaning properties, charge stability and caking resistance.Type: GrantFiled: September 7, 1990Date of Patent: November 19, 1991Assignee: Hitachi Chemical Company, Ltd.Inventors: Ryoji Tan, Shigeyoshi Tanaka, Ken-ichi Kishi, Yasuyuki Iguchi, Takeo Kudo, Takashi Amano, Hideki Kohno
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Patent number: 4983488Abstract: A toner for electrophotography produced by polymerizing a monomer dispersed by emulsification in the presence of a colorant and/or a magnetic powder, followed by coagulation is excellent in properties, particularly in cleaning properties, charge stability and caking resistance.Type: GrantFiled: March 30, 1990Date of Patent: January 8, 1991Assignee: Hitachi Chemical Co., Ltd.Inventors: Ryoji Tan, Shigeyoshi Tanaka, Ken-ichi Kishi, Yasuyuki Iguchi, Takeo Kudo, Takashi Amano, Hideki Kohno