Patents by Inventor Hiroki Ueno

Hiroki Ueno 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).

  • Patent number: 7562521
    Abstract: The flow of exhaust gas flowing through the SCR muffler becomes good, thus improving the efficiency of purging nitrogen oxide (NOx) contained in exhaust gas. Further, vibrations that are caused by vibrations of the vehicle, exhaust gas, and the like, to which a reducing agent, etc., supplying nozzle is subject, are suppressed or reduced, thus improving the efficiency of an SCR catalyst purging nitrogen oxide (NOx) and the durability of the reducing agent, etc., supplying nozzle. The SCR muffler comprises an SCR catalyst 1 for selectively reducing and purging nitrogen oxide (NOx) contained in exhaust gas; an exhaust pipe 2 that allows the exhaust gas to flow into the SCR catalyst; and a reducing agent, etc., supplying means 3 that supplies a reducing agent or a reducing agent precursor to the exhaust gas. A plate 4 having air holes 5 which disperse and make a flow of the exhaust gas uniform is provided downstream of the reducing agent, etc., supplying means and upstream of the SCR catalyst.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: July 21, 2009
    Assignees: Tokyo Roki Co., Ltd., Nissan Diesel Motor Co., Ltd.
    Inventors: Daisuke Shirai, Naobumi Yamada, Hitoshi Hiramoto, Isamu Kanaya, Hiroki Ueno
  • Publication number: 20090151335
    Abstract: An engine exhaust emission purification apparatus for reducing and purifying NOx in the exhaust emission by using a liquid reducing agent having a temperature maintenance device for maintaining a temperature of at least a part of a liquid reducing agent supply system configured by an injection nozzle and piping of the injection nozzle at a temperature lower than a boiling point of a solvent of the liquid reducing agent or equal to or higher than a melting point of dissolved matter in which the liquid reducing agent existing in the liquid reducing agent supply system conducts heat exchange with the liquid reducing agent supply system thereby being maintained at a temperature lower than the boiling point of the solvent or equal to or higher than the melting point of the dissolved matter and resultantly, occurrence of precipitation of the dissolved matter due to evaporation of only the solvent in the liquid reducing agent supply system does not occur, and even if precipitation of the dissolved matter occurs, the
    Type: Application
    Filed: February 18, 2009
    Publication date: June 18, 2009
    Applicant: NISSAN DIESEL MOTOR CO., LTD.
    Inventors: Kiminobu Hirata, Hisashi Akagawa, Shuichi Nakamura, Hiroki Ueno, Ikuo Sakai
  • Publication number: 20080038174
    Abstract: Provided in a catalyst system are: a first reaction part fitted with a first catalyst containing, as active constituents, at least, a complex oxide consisting of two or more oxides selected from among silica, alumina, titania, zirconia, and tungsten oxide, and a rare earth metal or transition metal (except Cu, Co, Ni, Mn, Cr, and V); and a second reaction part fitted with a second catalyst containing, as active constituents, at least, a noble metal and a silica-alumina type complex oxide.
    Type: Application
    Filed: February 1, 2005
    Publication date: February 14, 2008
    Inventors: Takayuki Mori, Nobuya Iwani, Takayuki Kumagai, Isamu Kanaya, Hiroki Ueno, Kiminobu Hirata
  • Publication number: 20070180816
    Abstract: A NOx reduction catalyst and an ammonia slip oxidation catalyst are disposed in an exhaust system in this order, and also, an electric fan is disposed on piping which communicates an upper space of a storage tank storing therein a reducing agent with the exhaust upstream of the NOx reduction catalyst. Then, when the temperature of the ammonia slip oxidation catalyst reaches or exceeds the temperature for activating a catalyst thereof, the electric fan is operated for a predetermined period of time, so that the gas (ammonia series gas) in the upper space of the storage tank is forcibly discharged to the upstream side of the NOx reduction catalyst. Further, a discharge-forcing device, such as an electric fan or the like, forcibly discharging the gas in the upper space of the storage tank, an adsorbing device temporarily adsorbing thereto the forcibly discharged gas and an oxidation catalyst oxidizing the gas desorbed from the adsorbing device, may be disposed to the storage tank in this order.
    Type: Application
    Filed: September 2, 2004
    Publication date: August 9, 2007
    Inventors: Kouji Masuda, Kiminohu Hirata, Hisashi Akagawa, Shuichi Nakamura, Hiroki Ueno, Ikuo Sakai
  • Publication number: 20070182601
    Abstract: A semiconductor device is easy for high accuracy impedance matching against differences in impedance of a transmission line and a package wire. A semiconductor chip having external output buffers and a packaging circuit are included. Each external output buffer has a first output portion whose internal impedance is adjusted commonly with other external output buffers in accordance with impedance control data and a second output portion whose internal impedance is adjusted independently of other external output buffers. Both of the first and second output portions are connected in parallel to a common output terminal. Common adjustment by the first output portion can cope with impedance of the transmission line and individual adjustment by the second output portion can cope with a difference of package wires.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 9, 2007
    Inventor: Hiroki Ueno
  • Patent number: 7254068
    Abstract: Parasitic capacitances formed between bit lines to which signals are to be read out of memory cells and a signal transmission line arranged above them are to be reduced. Second complementary global bit lines for transmitting data read out of memory cells MC via complementary bit lines are arranged above a memory cell array. Each second global bit line is so arranged that a triangle having as its vertexes the center of the section of one of the complementary bit lines, that of the section of the other and that of the section of the second global bit line arranged directly above these complementary bit lines be an isosceles triangle.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: August 7, 2007
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Hiroki Ueno, Takashi Akioka, Kinya Mitsumoto, Akihisa Aoyama, Masao Shinozaki
  • Publication number: 20070175204
    Abstract: An SCR muffler retains the heat of a reducing agent, etc., supplying nozzle and an exhaust pipe, thereby preventing the reduction of the efficiency of an SCR catalyst purging nitrogen oxide (NOx) even at low temperatures and improving the durability of the reducing agent, etc., supplying nozzle. The SCRmuffler comprises an SCRcatalyst 1 for selectively reducing and purging nitrogen oxide (NOx) contained in exhaust gas; an exhaust pipe 2 that allows the exhaust gas to flow into the SCR catalyst; and a reducing agent, etc., supplying nozzle 3 that supplies a reducing agent or a reducing agent precursor to the exhaust gas. The reducing agent, etc., supplying nozzle 3 or the exhaust pipe 2 is of a heat-retaining double pipe structure.
    Type: Application
    Filed: February 2, 2005
    Publication date: August 2, 2007
    Applicants: Tokyo Roki Co, Ltd, Nissan Diesel Motor Co.,Ltd
    Inventors: Daisuke Shirai, Hitoshi Hiramoto, Isamu Kanaya, Hiroki Ueno
  • Publication number: 20070169467
    Abstract: The flow of exhaust gas flowing through the SCR muffler becomes good, thus improving the efficiency of purging nitrogen oxide (NOx) contained in exhaust gas. Further, vibrations that are caused by vibrations of the vehicle, exhaust gas, and the like, to which a reducing agent, etc., supplying nozzle is subject, are suppressed or reduced, thus improving the efficiency of an SCR catalyst purging nitrogen oxide (NOx) and the durability of the reducing agent, etc., supplying nozzle. The SCR muffler comprises an SCR catalyst 1 for selectively reducing and purging nitrogen oxide (NOx) contained in exhaust gas; an exhaust pipe 2 that allows the exhaust gas to flow into the SCR catalyst; and a reducing agent, etc., supplying means 3 that supplies a reducing agent or a reducing agent precursor to the exhaust gas. A plate 4 having air holes 5 which disperse and make a flow of the exhaust gas uniform is provided downstream of the reducing agent, etc., supplying means and upstream of the SCR catalyst.
    Type: Application
    Filed: February 2, 2005
    Publication date: July 26, 2007
    Inventors: Daisuke Shirai, Naobumi Yamada, Hitoshi Hiramoto, Isamu Kanaya, Hiroki Ueno
  • Publication number: 20070163232
    Abstract: Clogging of an injection nozzle which supplies a reducing agent to the exhaust gas on an upstream side of a reduction catalyst in the exhaust gas passage is prevented, and the efficiency of NOx purification processing is improved. A reducing agent supply unit uses a detection signal of the exhaust gas temperature from a temperature detection device to set a supply quantity at or above a lower limit for cooling the interior of an injection nozzle to below the temperature at which urea water crystallizes, for the detected exhaust gas temperature, and supplies urea water to the injection nozzle at the set supply quantity. By such supply of urea water, the interior of the injection nozzle is cooled to below the temperature at which the urea water crystallizes. As a result, the urea water does not crystallize inside the injection nozzle, and clogging of the injection nozzle can be prevented.
    Type: Application
    Filed: September 13, 2004
    Publication date: July 19, 2007
    Inventor: Hiroki Ueno
  • Publication number: 20070121405
    Abstract: There is provided a semiconductor memory device for acceleration in burst mode. The semiconductor memory device has a burst mode for serially reading multiple bits of data in synchronization with both edges of a clock. Multiple memory blocks are geometrically arranged correspondingly to the multiple bits. An address selection circuit selects a memory cell from the memory blocks. Data read from the memory blocks is parallel transmitted to an output circuit. The output circuit first outputs data from a memory block to which data is transmitted fastest among the multiple memory blocks. The output circuit serially outputs data in the fixed order in synchronization with both edges of the clock.
    Type: Application
    Filed: November 16, 2006
    Publication date: May 31, 2007
    Inventor: Hiroki Ueno
  • Publication number: 20070101700
    Abstract: For preventing clogging in an injection nozzle for supplying a reducing agent to exhaust gas flow on an upstream side of a reducing catalyst and for improving the efficiency of NOx purification processing, the injection nozzle 14 has a tip end portion 18 provided with a ring shaped protruding ridge 19 disposed on an outer peripheral surface of an exhaust gas downstream side end portion of the tip end portion 18 that is arranged substantially in parallel with an exhaust gas flow direction A inside an exhaust pipe 13, the ring shaped protruding ridge 19 being provided with injection hole or holes 20 drilled outward from the central axis of the injection nozzle 14, so that the reducing agent is ejected on the exhaust gas upstream side of the reduction catalyst, from the injection holes 20.
    Type: Application
    Filed: September 2, 2004
    Publication date: May 10, 2007
    Applicant: NISSAN DIESEL MOTOR CO., LTD.
    Inventors: Nobuhiko Masaki, Kiminobu Hirata, Hiroki Ueno
  • Publication number: 20070092413
    Abstract: An engine exhaust emission purification apparatus for reducing and purifying NOx in the exhaust emission by using a liquid reducing agent having a temperature maintenance device for maintaining a temperature of at least a part of a liquid reducing agent supply system configured by an injection nozzle and piping of the injection nozzle at a temperature lower than a boiling point of a solvent of the liquid reducing agent or equal to or higher than a melting point of dissolved matter in which the liquid reducing agent existing in the liquid reducing agent supply system conducts heat exchange with the liquid reducing agent supply system thereby being maintained at a temperature lower than the boiling point of the solvent or equal to or higher than the melting point of the dissolved matter and resultantly, occurrence of precipitation of the dissolved matter due to evaporation of only the solvent in the liquid reducing agent supply system does not occur, and even If precipitation of the dissolved matter occurs, the
    Type: Application
    Filed: September 17, 2004
    Publication date: April 26, 2007
    Inventors: Kiminobu Hirata, Hisashi Akagawa, Shuichi Nakamura, Hiroki Ueno, Ikuo Sakai
  • Publication number: 20070072923
    Abstract: The present invention provides a process for producing 2?-(1H-tetrazol-5-yl)biphenyl-4-carbaldehyde which comprises reacting 2?-cyanobiphenyl-4-carbaldehyde with a salt of azide; a process for producing a highly pure crystal of 2?-(1H-tetrazol-5-yl)biphenyl-4-carbaldehyde which comprises reacting 2?-cyanobiphenyl-4-carbaldehyde with a salt of azide, obtaining a crystal of 2?-(1H-tetrazol-5-yl)biphenyl-4-carbaldehyde, dissolving said crystal obtained and recrystallizing a highly pure crystal in tetrahydrofuran; and the like. According to the present process, 2?-(1H-tetrazol-5-yl)biphenyl-4-carbaldehyde which is useful as a synthetic intermediate of medicines can be produced in a short process at high yield and high purity.
    Type: Application
    Filed: September 1, 2004
    Publication date: March 29, 2007
    Inventors: Nobushige Itaya, Kozo Matsui, Yutaka Ohtani, Hiroki Ueno, Toshikazu Kaneko
  • Patent number: 7196540
    Abstract: A semiconductor device is easy for high accuracy impedance matching against differences in impedance of a transmission line and a package wire. A semiconductor chip having external output buffers and a packaging circuit are included. Each external output buffer has a first output portion whose internal impedance is adjusted commonly with other external output buffers in accordance with impedance control data and a second output portion whose internal impedance is adjusted independently of other external output buffers. Both of the first and second output portions are connected in parallel to a common output terminal. Common adjustment by the first output portion can cope with impedance of the transmission line and individual adjustment by the second output portion can cope with a difference of package wires.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: March 27, 2007
    Assignee: Renesas Technology Corp.
    Inventor: Hiroki Ueno
  • Patent number: 7164287
    Abstract: The present invention provides a semiconductor device that can shorten the initialization cycle of impedance matching of interface buffers and reduce as much as possible affects on other circuits at the time of fine control thereafter. The semiconductor device (1) includes interface buffers (18a to 18c) whose internal impedances are controlled by impedance control data and an impedance control circuit (35) that generates the impedance control data. The impedance control circuit includes a first impedance control mode that initially generates the impedance control data by a binary search and comparison operation resulting from predetermined impedance control steps and sets the impedance control data in the interface buffers, and a second impedance control mode that updates the impedance control data set in the interface buffers by a sequential comparison operation resulting from the predetermined impedance control steps.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: January 16, 2007
    Assignee: Renesas Technology Corp.
    Inventor: Hiroki Ueno
  • Publication number: 20060248880
    Abstract: An exhaust gas purification apparatus of an engine having a reduction catalytic converter arranged in an engine exhaust gas system, for reducing and purifying nitrogen oxide by a liquid reducing agent, a reducing agent supply device controlling a flow rate of a liquid reducing agent that is supplied to the reduction catalytic converter, depending on engine operating conditions, an injection nozzle secured to the exhaust system via a flange, for injection-supplying the liquid reducing agent into exhaust gas at a position upstream of the reduction catalytic converter, and piping providing a fluid communication between the reducing agent supply device and the injection nozzle. The piping is constructed of a material made of ceramics, or water repellency treatment is applied to the inner wall of at least one of the injection nozzle and the piping.
    Type: Application
    Filed: March 30, 2006
    Publication date: November 9, 2006
    Inventors: Kiminobu Hirata, Hisashi Akagawa, Shuichi Nakamura, Hiroki Ueno, Ikuo Sakai
  • Publication number: 20060163095
    Abstract: A sliding cover 30 includes an outside plate 70, a structural member 80 fixed to the rear face of the outside plate, a movable holding member 90 disposed in a space between the outside plate and the structural member, and toggling means 100 disposed between the holding member and the outside plate or the structural member. The holding member includes two parallel racks 82a and 82b, and guiding portions 81 disposed at both end portions and extending in the same direction as the racks. The holding member includes a holding plate 91; an even number of pinions 92a and 92b meshed with each other and supported by the holding plate so as to be rotatable; and guiding components 93 supported by the holding plate, the even number of pinions being disposed between the guiding components. The pinions located at both ends are meshed with the racks, and the guiding components are engaged with the guiding portions so as to be slidable.
    Type: Application
    Filed: October 7, 2004
    Publication date: July 27, 2006
    Inventors: Michinobu Yanagisawa, Hirokuni Miyai, Takuya Nakajyou, Hiroki Ueno
  • Publication number: 20060158918
    Abstract: Parasitic capacitances formed between bit lines to which signals are to be read out of memory cells and a signal transmission line arranged above them are to be reduced. Second complementary global bit lines for transmitting data read out of memory cells MC via complementary bit lines are arranged above a memory cell array. Each second global bit line is so arranged that a triangle having as its vertexes the center of the section of one of the complementary bit lines, that of the section of the other and that of the section of the second global bit line arranged directly above these complementary bit lines be an isosceles triangle.
    Type: Application
    Filed: March 15, 2006
    Publication date: July 20, 2006
    Inventors: Hiroki Ueno, Takashi Akioka, Kinya Mitsumoto, Akihisa Aoyama, Masao Shinozaki
  • Patent number: 7068551
    Abstract: Parasitic capacitances formed between bit lines to which signals are to be read out of memory cells and a signal transmission line arranged above them are to be reduced. Second complementary global bit lines for transmitting data read out of memory cells MC via complementary bit lines are arranged above a memory cell array. Each second global bit line is so arranged that a triangle having as its vertexes the center of the section of one of the complementary bit lines, that of the section of the other and that of the section of the second global bit line arranged directly above these complementary bit lines be an isosceles triangle.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: June 27, 2006
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Hiroki Ueno, Takashi Akioka, Kinya Mitsumoto, Akihisa Aoyama, Masao Shinozaki
  • Publication number: 20060023102
    Abstract: An imaging device is composed of a main body casing and a monitor casing, which coincide with each other in their lengthwise direction when not in use at a first position and which, when in use at a second position, are swung relative to each other about a first pivot such that their lengthwise directions form an angle of 90 degrees. The monitor casing is made up of a first casing in which there exists the first pivot and a second casing which is joined to the first casing such that it swings about the second pivot. The first pivot is placed at a position displaced toward the left lateral side from the center of the width of the main body casing so that the second casing is positioned outside the left lateral side of the width of the main body casing when in use at the second position.
    Type: Application
    Filed: July 18, 2005
    Publication date: February 2, 2006
    Inventors: Hiroki Ueno, Takeshi Kazama, Hiroyuki Tsutsui, Haruo Hayashi, Tsuyoshi Kanai