Patents by Inventor Kazunari Takahashi
Kazunari Takahashi 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: 6794847Abstract: The charging system for a vehicle includes: a motor generator which operates as a generator to generate an alternating current when the motor generator is driven by an internal combustion engine, and operates as a motor when an alternating current is supplied thereto; a switching circuit for converting the alternating current generated by the motor generator into a direct current; a first accumulator accumulating therein the direct current converted by the switching circuit; a second accumulator accumulating therein the direct current converted by the switching circuit and having a smaller accumulation voltage than that of the first accumulator; a first opening/closing unit interposed between the first accumulator and the switching circuit; a second opening/closing unit interposed between the second accumulator and the switching circuit; and, a control unit for controlling the opening and closing of the first and second opening/closing units.Type: GrantFiled: January 31, 2002Date of Patent: September 21, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masaharu Hosoda, Masaaki Kaizuka, Kazunari Takahashi, Shigeru Aoki
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Patent number: 6788565Abstract: A semiconductor memory device has a plurality of memory cells each having a first transistor, a second transistor having a source or drain connected to one portion of the source or drain of the first transistor, and a third transistor having a source or drain connected to the other portion of the source or drain of the first transistor. The first transistor accumulates, in the channel thereof, charges transferred from the second and third transistors.Type: GrantFiled: March 24, 2003Date of Patent: September 7, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masashi Agata, Kazunari Takahashi, Masanori Shirahama, Naoki Kuroda, Hiroyuki Sadakata, Ryuji Nishihara
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Publication number: 20040104699Abstract: There are provided as drive sources an engine 2, a front motor 3 provided on a front wheels 8 side of the vehicle and a rear motor 4 provided on a rear wheels 9 side of the vehicle, and in executing a regeneration of deceleration energy when braking, a regeneration capacity of the front motor 3 and a regeneration capacity of the rear motor 4 are calculated, respectively, so that the regeneration is executed with either of these motors 3, 4 which can provide a larger regeneration capacity.Type: ApplicationFiled: November 20, 2003Publication date: June 3, 2004Applicant: HONDA MOTOR CO., LTD.Inventors: Ryo Nishikawa, Yusuke Tatara, Akihiro Yamamoto, Kazunari Takahashi
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Publication number: 20040070293Abstract: An electric motor lead frame for connecting motor coils of the same phase is formed integrally by a linear conductor. The linear conductor includes at least a single conducting wire and has terminal portions formed by bending for connection with winding ends of motor coils.Type: ApplicationFiled: August 29, 2003Publication date: April 15, 2004Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Akira Kabasawa, Kazunari Takahashi, Akihiro Okamura
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Publication number: 20040066103Abstract: An interconnection assembly has phase parts for U phase, V phase and W phase. The phase parts each are of a plurality of interconnection assembly parts that are connected in the form of a ring and include a conductor section to which a motor coil wire is connected, the conductor section being formed by stripping fluororesin insulation at a predetermined position, and the phase parts are partially fixedly bundled.Type: ApplicationFiled: August 19, 2003Publication date: April 8, 2004Applicants: Hitachi Cable, Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Katsuaki Ohuchi, Katsuo Endo, Hideo Matsuo, Akira Kabasawa, Akihiro Okamura, Kazunari Takahashi
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Publication number: 20030179629Abstract: A semiconductor memory device has a plurality of memory cells each having a first transistor, a second transistor having a source or drain connected to one portion of the source or drain of the first transistor, and a third transistor having a source or drain connected to the other portion of the source or drain of the first transistor. The first transistor accumulates, in the channel thereof, charges transferred from the second and third transistors.Type: ApplicationFiled: March 24, 2003Publication date: September 25, 2003Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Masashi Agata, Kazunari Takahashi, Masanori Shirahama, Naoki Kuroda, Hiroyuki Sadakata, Ryuji Nishihara
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Publication number: 20030169617Abstract: The semiconductor memory device includes: a memory cell including a capacitor having a charge storage node and a first MIS transistor and a second MIS transistor each having a source connected to the charge storage node; a first word line and a first bit line respectively connected to the gate and the drain of the first MIS transistor; a second word line and a second bit line respectively connected to the gate and the drain of the second MIS transistor; and a timer circuit for generating a periodic signal having a predetermined period. The first word line or the second word line is activated in response to the periodic signal.Type: ApplicationFiled: February 26, 2003Publication date: September 11, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masashi Agata, Kazunari Takahashi
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Patent number: 6598691Abstract: An electric vehicle in which driving force of a motor driven by batteries is transmitted through a reduction device and a differential to front wheels. The motor and the reduction device are disposed at portions of a vehicle body rearwardly of the differential and hence, a portion of the vehicle body in front of the differential is enlarged and can effectively function as a crushable zone upon a frontal collision of a vehicle. Moreover, the motor and the reduction device which are heavy components are disposed near a central portion of the vehicle body, leading to a mid-ship layout. This conrtibutes to an enhancement in motional property of the vehicle.Type: GrantFiled: December 18, 1998Date of Patent: July 29, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Mita, Kazunari Takahashi, Shiro Yamamuro
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Patent number: 6570288Abstract: An outer rotor type brushless direct current motor has an outer rotor including a plurality of permanent magnets attached along the inner circumference of an annular yoke such that the magnetic poles face the S magnetic poles. Thin sections are formed by chamfering the radially outer periphery of the two end sections in the circumferential direction of each of the permanent magnets. Magnetic flux passage sections of the yoke providing connection between the thin sections of adjacent permanent magnets are expanded radially inwards. In accordance with the above-mentioned arrangement, the cross section of the magnetic path in the magnetic flux passage sections is increased, thereby suppressing the occurrence of magnetic saturation and preventing the maximum torque of the permanent magnets from decreasing while reducing their size. Moreover, because the magnetic flux passage sections of the yoke are expanded radially inwards, the external dimensions of the yoke do not increase.Type: GrantFiled: June 13, 2001Date of Patent: May 27, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masaaki Kaizuka, Kazuma Okuda, Kazunari Takahashi, Masaharu Hosoda
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Publication number: 20030094874Abstract: An outer rotor type brushless direct current motor has an outer rotor including a plurality of permanent magnets attached along the inner circumference of an annular yoke such that the magnetic poles face the S magnetic poles. Thin sections are formed by chamfering the radially outer periphery of the two end sections in the circumferential direction of each of the permanent magnets. Magnetic flux passage sections of the yoke providing connection between the thin sections of adjacent permanent magnets are expanded radially inwards. In accordance with the above-mentioned arrangement, the cross section of the magnetic path in the magnetic flux passage sections is increased, thereby suppressing the occurrence of magnetic saturation and preventing the maximum torque of the permanent magnets from decreasing while reducing their size. Moreover, because the magnetic flux passage sections of the yoke are expanded radially inwards, the external dimensions of the yoke do not increase.Type: ApplicationFiled: June 13, 2001Publication date: May 22, 2003Inventors: Masaaki Kaizuka, Kazuma Okuda, Kazunari Takahashi, Masaharu Hosoda
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Publication number: 20030066694Abstract: An electric vehicle in which driving force of a motor driven by batteries is transmitted through a reduction device and a differential to front wheels. The motor and the reduction device are disposed at portions of a vehicle body rearwardly of the differential and hence, a portion of the vehicle body in front of the differential is enlarged and can effectively function as a crushable zone upon a frontal collision of a vehicle. Moreover, the motor and the reduction device which are heavy components are disposed near a central portion of the vehicle body, leading to a mid-ship layout. This contributes to an enhancement in motional property of the vehicle.Type: ApplicationFiled: December 18, 1998Publication date: April 10, 2003Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Mita , Kazunari Takahashi , Shiro Yamamuro
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Patent number: 6492532Abstract: The present invention provides a method for producing a carbonyl compound by dehydrogenating an alcohol. Namely, it relates to a method for producing a carbonyl compound, which comprises dehydrogenating an alcohol in the presence of a complex compound catalyst comprising ruthenium and an organic phosphine wherein aliphatic carbons are bonded to two or more of the three bonding hands of the phosphorus atom.Type: GrantFiled: August 21, 2001Date of Patent: December 10, 2002Assignee: Mitsubishi Chemical CorporationInventors: Masaru Utsunomiya, Kazunari Takahashi, Yoko Seto, Souichi Orita, Souichi Amano
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Patent number: 6463006Abstract: A semiconductor integrated circuit is disclosed which includes a clock synchronous memory, an internal clock generating circuit, a clock selecting circuit, a data output converting circuit, and a data output selecting circuit. The clock synchronous memory is disposed to receive a control signal, an address signal, and a data input and provide an internal data output. The internal clock generating circuit is disposed to generate an internal clock signal having a frequency higher than that of an external clock signal. The clock selecting circuit is disposed to select between the external clock signal and the internal clock signal and send the selected clock signal to the clock synchronous memory. The data output converting circuit is disposed to convert the internal data output into an external data output in synchronization with a clock signal having a frequency lower than that of the internal clock signal.Type: GrantFiled: July 12, 2001Date of Patent: October 8, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takeshi Nakano, Kazunari Takahashi
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Patent number: 6429316Abstract: Disclosed is a process for preparing a pyrrolidone derivative, which comprises allowing at least one of &ggr;-butyrolactone, 4-hydroxybutyric acid, and a low-molecular polymer of 4-hydroxybutyric acid to react with an alkylamine, wherein (i) the content of a primary amine in said alkylamine is 85% by weight or lower, and (ii) the molar ratio of the total amount of the charged primary and secondary amines to the total amount of the charged &ggr;-butyrolactone, 4-hydroxybutyric acid, and low-molecular 4-hydroxybutyric acid polymers satisfies formula: 1.0≦(A1+A2/2.5)/(B1+B2+B3) wherein A1, A2, B1, B2, and B3 represent the molar amounts of a primary amine, a secondary amine, &ggr;-butyrolactone, 4-hydroxybutyric acid, and low-molecular 4-hydroxybutyric acid polymers, respectively.Type: GrantFiled: November 23, 1999Date of Patent: August 6, 2002Assignee: Mitsubishi Chemical CorporationInventors: Kazunari Takahashi, Yoko Seto, Masaru Utsunomiya, Souichi Orita, Kazutaka Maruyama, Tomonori Okubi
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Publication number: 20020101217Abstract: The charging system for a vehicle includes: a motor generator which operates as a generator to generate an alternating current when the motor generator is driven by an internal combustion engine, and operates as a motor when an alternating current is supplied thereto; a switching circuit for converting the alternating current generated by the motor generator into a direct current; a first accumulator accumulating therein the direct current converted by the switching circuit; a second accumulator accumulating therein the direct current converted by the switching circuit and having a smaller accumulation voltage than that of the first accumulator; a first opening/closing unit interposed between the first accumulator and the switching circuit; a second opening/closing unit interposed between the second accumulator and the switching circuit; and, a control unit for controlling the opening and closing of the first and second opening/closing units.Type: ApplicationFiled: January 31, 2002Publication date: August 1, 2002Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Masaharu Hosoda, Masaaki Kaizuka, Kazunari Takahashi, Shigeru Aoki
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Patent number: 6366338Abstract: A line-scanning optical printer, which forms an image on a sensitized sheet (25) by projecting a linear light having a given width and length thereto while successively scanning individual lines in the direction of the width, comprises a casing (50) having light shielding properties and including a window portion for radiating the linear light to the outside, a light emitting element (60), which substantially functions as a point light source and is stored in the casing, an optical system (72, 71, 73) for guiding light from the light emitting element (60) as the linear light to the window portion, and a liquid crystal optical shutter (80) attached to the window portion.Type: GrantFiled: January 11, 2000Date of Patent: April 2, 2002Assignee: Citizen Watch Co. Ltd.Inventors: Sadao Masubuchi, Shigeru Futakami, Masaaki Matsunaga, Masafumi Yokoyama, Akira Shiota, Maki Wakita, Kazunari Takahashi, Shinichi Nonaka, Chikara Aizawa
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Publication number: 20020035270Abstract: Disclosed is a process for preparing a pyrrolidone derivative, which comprises allowing at least one of &ggr;-butyrolactone, 4-hydroxybutyric acid, and a low-molecular polymer of 4-hydroxybutyric acid to react with an alkylamine, wherein (i) the content of a primary amine in said alkylamine is 85% by weight or lower, and (ii) the molar ratio of the total amount of the charged primary and secondary amines to the total amount of the charged &ggr;-butyrolactone, 4-hydroxybutyric acid, and low-molecular 4hydroxybutyric acid polymers satisfies formula:Type: ApplicationFiled: November 23, 1999Publication date: March 21, 2002Inventors: KAZUNARI TAKAHASHI, YOKO SETO, MASARU UTSUNOMIYA, SOUICHI ORITA, KAZUTAKA MARUYAMA, TOMONORI OKUBI
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Publication number: 20020002289Abstract: The present invention provides a method for producing a carbonyl compound by dehydrogenating an alcohol. Namely, it relates to a method for producing a carbonyl compound, which comprises dehydrogenating an alcohol in the presence of a complex compound catalyst comprising ruthenium and an organic phosphine wherein aliphatic carbons are bonded to two or more of the three bonding hands of the phosphorus atom.Type: ApplicationFiled: August 21, 2001Publication date: January 3, 2002Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Masaru Utsunomiya, Kazunari Takahashi, Yoko Seto, Souichi Orita, Souichi Amano
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Publication number: 20010038570Abstract: A semiconductor integrated circuit is disclosed which includes a clock synchronous memory, an internal clock generating circuit, a clock selecting circuit, a data output converting circuit, and a data output selecting circuit. The clock synchronous memory is disposed to receive a control signal, an address signal, and a data input and provide an internal data output. The internal clock generating circuit is disposed to generate an internal clock signal having a frequency higher than that of an external clock signal. The clock selecting circuit is disposed to select between the external clock signal and the internal clock signal and send the selected clock signal to the clock synchronous memory. The data output converting circuit is disposed to convert the internal data output into an external data output in synchronization with a clock signal having a frequency lower than that of the internal clock signal.Type: ApplicationFiled: July 12, 2001Publication date: November 8, 2001Inventors: Takeshi Nakano, Kazunari Takahashi
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Patent number: D449073Type: GrantFiled: January 5, 1999Date of Patent: October 9, 2001Assignee: Pentel Kabushiki KaishaInventors: Shigeo Oka, Kazunari Takahashi