Patents by Inventor Yasuo Ito

Yasuo Ito 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: 6162833
    Abstract: Aqueous solution, including at least one of optically active (-)-(R)-.alpha.-((tert-butylamino)methyl)-2-chloro-4-hydroxybenzyl alcohol represented by the following formula: ##STR1## and pharmacologically acceptable salt thereof. The aqueous solution also includes at least one photostabilizer selected from the group consisting of saccharide, sugar alcohol, and polyalcohol. A content of the at least one of optically active (-)-(R)-.alpha.-((tert-butylamino)methyl)-2-chloro-4-hydroxybenzyl alcohol and pharmacologically acceptable salt thereof is 0.01 to 10% (w/v) based on a volume of the aqueous solution. A content of the at least one photostabilizer is 1 to 50% (w/v) based on the volume of the aqueous solution. The content of the at least one photostabilizer is at least 10% (w/w) based on a total weight of the at least one of optically active (-)-(R)-.alpha.-((tert-butylamino)methyl)-2-chloro-4-hydroxybenzyl alcohol and pharmacologically acceptable salt thereof. Method of making a stabilized aqueous solution.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: December 19, 2000
    Assignee: Hokuriku Seiyaku Co., Ltd.
    Inventors: Yasuo Ito, Hideo Kato, Eiichi Koshinaka, Masahiro Yamazaki, Kazuya Matsuo
  • Patent number: 6075035
    Abstract: Dihydrate crystal of 3-[4-(8-fluoro-5,11-dihydrobenz[b]oxepino[4,3-b]pyridin-11-ylidene)piperid ino]propionic acid providing high-intensity diffraction peaks at diffraction angles (2.theta.) of about 4.2.degree., 17.0.degree., and 21.3.degree. in a powder X-ray diffraction profile; a medicament comprising the dihydrate crystal; and a process for preparing the dihydrate crystal which comprises the steps of treating a crystalline substance containing an anhydride crystal of the above compound with hydrous acetone, and subjecting the product to drying treatment and moistening treatment.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: June 13, 2000
    Assignee: Hokuriku Seiyaku Co., Ltd.
    Inventors: Yasuo Ito, Hideo Kato, Shingo Yasuda, Noriyuki Kado, Nobuhiko Iwasaki, Hiroyuki Nishino, Makoto Takeshita
  • Patent number: 6034787
    Abstract: An image processing apparatus includes an input device which inputs a digital input signal expressing a gradation, and a timing signal generator generates a predetermined timing signal. A delay device delays the timing signal in accordance with the gradation expressed by the digital input signal, and a pulse width modulation signal generator generates a pulse width generation signal having a pulse width in accordance with the gradation of the digital input signal, based upon the signal delayed by the delay device. An intermediate gradation is expressed by controlling on the ON/OFF time of a laser beam without the need for offset and gain adjustments which are characteristics of an analog circuit. In a first mode, one dot is formed in correspondence with one pixel of the digital input signal, and in a second mode one dot is formed in correspondence with a plurality of pixels of the digital input signal.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: March 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Hashimoto, Yasuo Ito
  • Patent number: 6000276
    Abstract: A knock detection device for an internal combustion engine make provisions to prevent erroneous decisions from being made due to a steplike signal change at the time of mask removal or to an overlap between an LC resonance generation period and a knock occurrence period in high engine rpm conditions. A low-frequency component is removed from an ion current signal by an HPF, and the resulting flat signal is supplied to a mask circuit, thereby reducing the amount of discontinuity occurring at the time of mask removal and suppressing noise in an output signal of a BPF to a level that does not affect knock detection. Further, by setting the gate period in a peak-hold circuit slightly delayed with respect to the mask removal timing, noise associated with the mask removal is completely eliminated.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: December 14, 1999
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Kazuhisa Mogi, Koichi Nakata, Yasuo Ito
  • Patent number: 5979406
    Abstract: Disclosed is a knock control device for an internal combustion engine wherein, when performing knock control based on an ion current detected using a configuration containing an ignition coil secondary in an ion current path, a knock detection gate period is controlled appropriately in accordance with variation of a mask period in order to ensure complete removal of residual magnetic noise. An ion current output detected through an ion current detection circuit and an inverting amplifier circuit is masked by a mask circuit until a prescribed time elapses after the end of spark discharge, thereby accomplishing complete removal of noise occurring after the end of the discharge. A band-pass filter (BPF) extracts a knock frequency component from the output of the mask circuit, and an integrator circuit integrates the output of the BPF during the gate period.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: November 9, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiichiro Aoki, Yasuo Ito
  • Patent number: 5970952
    Abstract: A combustion state detector apparatus for an internal combustion engine has a current detection device for detecting a current flowing between the ignition plug and a ground, and an ignition driving device for driving the ignition plug on the basis of an ignition instruction signal from an electronic control device of the internal combustion engine. An independent unit including a current detection device and an ignition driving device, is provided for each cylinder of the internal combustion engine. With respect to each cylinder, the apparatus determines whether a misfire has occurred on the basis of the current flowing between the ignition plug and the ground at the time of combustion. The apparatus is also capable of detecting abnormalities and/or wire breakages in a signal system provided for signal transmission between each independent unit and the electronic control device of the internal combustion engine.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: October 26, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhisa Mogi, Koichi Nakata, Toshiaki Yamaura, Eiji Takakuwa, Yasuo Ito
  • Patent number: 5959192
    Abstract: A knock detection device for an internal combustion engine prevents erroneous knock detection decisions from being made due to an LC resonant current in an ion current path. An LC resonance frequency, which is determined based on an inductance of ignition coil secondary and a stray capacitance formed in the ion current path, is set so as to be displaced from a knock frequency so that the knock frequency component alone can be detected accurately from the ion current output. Preferably, the inductance of the ignition coil secondary is set to a large value, thereby setting the LC resonance frequency lower than the knock frequency and thus improving ignitability as well as knock detectability. Also preferably, the LC resonance frequency is set to a value lower than a lower cut-off frequency of a knock signal extraction band-pass filter provided in a processing circuit. This ensures more reliable elimination of the noise causing LC resonance frequency component.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: September 28, 1999
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Kazuhisa Mogi, Koichi Nakata, Yasuo Ito
  • Patent number: 5952387
    Abstract: Aqueous solution, including at least one of optically active (-)-(R)-.alpha.-((tert-butylamino)methyl)-2-chloro-4-hydroxybenzyl alcohol represented by the following formula: ##STR1## and pharmacologically acceptable salt thereof. The aqueous solution also includes at least one photostabilizer selected from the group consisting of saccharide, sugar alcohol, and polyalcohol. A content of the at least one of optically active (-)-(R)-.alpha.-((tert-butylamino)methyl)-2-chloro-4-hydroxybenzyl alcohol and pharmacologically acceptable salt thereof is 0.01 to 10% (w/v) based on a volume of the aqueous solution. A content of the at least one photostabilizer is 1 to 50% (w/v) based on the volume of the aqueous solution. The content of the at least one photostabilizer is at least 10% (w/w) based on a total weight of the at least one of optically active (-)-(R)-.alpha.-((tert-butylamino)methyl)-2-chloro-4-hydroxybenzyl alcohol and pharmacologically acceptable salt thereof. Method of making a stabilized aqueous solution.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: September 14, 1999
    Assignee: Hokuriku Seiyaku Co., Ltd.
    Inventors: Yasuo Ito, Hideo Kato, Eiichi Koshinaka, Masahiro Yamazaki, Kazuya Matsuo
  • Patent number: 5939616
    Abstract: A knocking detecting sensor (1) includes a piezoelectric element plate (8) for detecting vibration due to knocking generated in an internal combustion engine and a main metallic sleeve (5) for supporting the piezoelectric element plate (8) on the side of one face. The sensor (1) is attached to a prescribed attaching unit (30) of an internal combustion engine. The piezoelectric element plate (8) is formed in a flat axis-symmetrical shape at a position relative to an axial line (O) that is substantially orthogonal to the attaching face (30a) of the attaching unit (30). The main metallic shell (5) has an opposite face (35) to the attaching face (30a) of the attaching unit (30), and has a notch portion (37) opening toward the opposite face (35) at a position a prescribed distance away from the axial line (O). By providing the notch portion (37), the center of gravity (G) of the sensor (1) can be corrected so that it approaches the axial line (O).
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: August 17, 1999
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yasuo Ito, Yoshitaka Fujikawa
  • Patent number: 5866808
    Abstract: An apparatus for detecting a condition of burning in an internal combustion engine includes a spark plug and an ignition coil. The ignition coil has a primary winding and a secondary winding. The secondary winding is connected to the spark plug. An ion current sensing resistor is connected to a low voltage side of the secondary winding of the ignition coil for sensing an ion current. A diode is connected in parallel with the primary winding of the ignition coil. A switching element is connected in series with the primary winding of the ignition coil. The switching element is movable into and out of an on state. A suitable device is operative for resisting a current flowing through the diode when the switching element is in the on state.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: February 2, 1999
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinji Ooyabu, Yasuo Ito, Kazuhisa Mogi
  • Patent number: 5859026
    Abstract: 5-Amino-7-((3S,4S)-3-amino-4-methyl (or ethyl)-1-pyrrolidinyl)-1-cyclopropyl-6-fluoro-1,4-dihydro-8-methyl-4-oxoqu inoline-3-carboxylic acid or a pharmacologically acceptable salt thereof represented by the following formula wherein asymmetric carbon atoms marked with asterisks are in the S-configurations and R.sup.1 represents methyl group or ethyl group; and an antibacterial agent comprising said compound as an active ingredient.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: January 12, 1999
    Assignee: Hokuriku Seiyaku Co., Ltd.
    Inventors: Yasuo Ito, Hideo Kato, Shingo Yasuda, Noriyuki Kada, Toshihiko Yoshida, Yoichi Yamamoto
  • Patent number: 5836285
    Abstract: A device for controlling knocking includes a first unit which applies a voltage across a pair of electrodes installed in a combustion chamber of the internal combustion engine, detects an ionic current flowing between said pair of electrodes through ions generated when a gas mixture in the combustion chamber burns, and discriminates whether the knocking is occurring or not based upon the ionic current that is detected. The device for controlling knocking further includes a second unit which detects vibration of the cylinder block by using a vibration sensor installed in the cylinder block of the internal combustion engine, and discriminates whether the knocking is occurring or not based upon the vibration of the cylinder block that is detected. The device for controlling knocking controls the ignition timing of the internal combustion engine based upon the result of discrimination of either the first unit or the second unit depending upon the operation region of the internal combustion engine.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: November 17, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiichiro Aoki, Kazuhisa Mogi, Koichi Nakata, Yasuo Ito, Youichi Kurebayashi
  • Patent number: 5754303
    Abstract: An image processing apparatus includes a first delay generation circuit, requiring no high-frequency clocks, for obtaining a pixel formation start timing signal from a digital input signal, a second delay generation circuit, requiring no high-frequency clocks, for obtaining a pixel formation end timing signal from the digital input signal, and a unit for obtaining a pixel formation interval signal from the pixel formation start and end timing signals.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: May 19, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuo Ito, Akira Torisawa, Eihiro Sakaki, Masaki Ohtake, Fumihiro Ueno
  • Patent number: 5629781
    Abstract: This disclosure relates to an image forming and processing apparatus having a plurality of storage device capable of forming an image at a high speed by reading image data in parallel. Since a predetermined quantity of image data is stored in a plurality of hard discs, and the image data is read from the hard discs to a double buffer in parallel, an image can be formed continuously at a high speed. Another structure is arranged in a manner such that images are stored in hard discs of an optional number and the images are transmitted to a printer engine by using a FIFO (First In First Out) buffer which corresponds to the hard discs. Therefore, an image can be transmitted continuously at a high speed asynchronously with the printer output.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 13, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumihiro Ueno, Akira Torisawa, Yasuo Ito, Eihiro Sakaki, Masaki Ohtake, Hiromi Kataoka, Atsushi Kashihara, Kaoru Seto
  • Patent number: 5597848
    Abstract: A benzenesulfonamide derivative represented by the following general formula: ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom; R.sup.2 represents a C.sub.1 -C.sub.10 straight- or branched-chain alkyl group, a C.sub.3 -C.sub.8 cycloalkyl group which may be substituted with one or more C.sub.1 -C.sub.6 alkyl groups on its ring, a C.sub.1 -C.sub.6 alkyl group substituted with one or more C.sub.3 -C.sub.8 cycloalkyl groups, 1-adamantylmethyl group, 2-norbornylmethyl group, or a C.sub.1 -C.sub.6 alkyl group substituted with one or more phenyl groups whose benzene ring may have one or more substituents; R.sup.3 represents a hydrogen atom or a lower alkyl group; and n is an integer of from 2 to 4, and a pharmacologically acceptable salt thereof. The present compounds have thromboxane A.sub.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: January 28, 1997
    Assignee: Hokuriku Seiyaku Co., Ltd.
    Inventors: Yasuo Ito, Hideo Kato, Shingo Yasuda, Nobuo Ogawa, Shunichiro Sakurai, Tomio Suzuki
  • Patent number: 5596426
    Abstract: This disclosure relates to an image forming and processing apparatus having a plurality of storage devices capable of forming an image at a high speed by reading image data in parallel. Since a predetermined quantity of image data is stored in a plurality of hard discs, and the image data is read from the hard discs to a double buffer in parallel, an image can be formed continuously at a high speed. Another structure is arranged in a manner such that images are stored in hard discs of an optional number and the images are transmitted to a printer engine by using a FIFO (First In First Out) buffer which corresponds to the hard discs. Therefore, an image can be transmitted continuously at a high speed asynchronously with the printer output.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 21, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumihiro Ueno, Akira Torisawa, Yasuo Ito, Eihiro Sakaki, Masaki Ohtake, Hiromi Kataoka, Atsushi Kashihara, Kaoru Seto
  • Patent number: 5554930
    Abstract: In a spark plug voltage probe device which detects a voltage applied to a spark plug installed in an internal combustion engine so as to analyze a burning condition in the internal combustion engine on the basis of the voltage applied to the spark plug, a rubber clamper (9) is secured to the internal combustion engine, and having a groove (92) in which a spark cable (60) is located so as to form a static capacity between the rubber clamper (9) and the spark plug cable (60). An electrical conductor (93) is embedded in the rubber clamper (9) along the groove (92) while the electrical conductor (93) is connected to a microcomputer by way of an output cable (64) so as to analyze a spark plug voltage waveform. A condenser (42) is connected to a common point (A) between the electrical conductor (93) and the microcomputer so as to reduce the spark plug voltage according to a capacity of the condenser (42).
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: September 10, 1996
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Shigeru Miyata, Hideji Yoshida, Yoshihiro Matsubara, Yasuo Ito, Takashi Suzuki
  • Patent number: 5547962
    Abstract: A 5-amino-8-methyl-7-pyrrolidinylquinoline-3-carboxylic acid derivative represented by the general formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a lower alkyl group; R.sup.2 is a hydrogen atom, a lower alkyl group, a lower alkanoyl group, a halogenated lower alkanoyl group or a residue of carboxylic acid ester; R.sup.3 is a hydrogen atom or a lower alkyl group; R.sup.4, R.sup.5 or R.sup.6 are each independently a hydrogen atom or a lower alkyl group; or two of R.sup.4, R.sup.5 and R.sup.6 may be taken together to form a --(CH.sub.2).sub.n -group wherein n is 1 or 2, a stereoisomer thereof, or a pharmacologically acceptable salt thereof, the process for preparing these compounds, a pharmaceutical composition comprising an effective amount of these compounds and methods for the treatment of infectious diseases through the administration to patients of an effective amount of these compounds, and intermediates of these compounds are disclosed. These compounds are effective as antibacterial agents.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: August 20, 1996
    Assignee: Horuriku Seiyaku Co., Ltd.
    Inventors: Yasuo Ito, Hideo Kato, Singo Yasuda, Noriyuki Kado, Toshihiko Yoshida, Yoichi Yamamoto
  • Patent number: 5543716
    Abstract: In a sparkplug voltage probe device in use for an internal combustion engine, an insulator base is attached to the internal combustion engine, an upper surface of the insulator base having a plurality of grooves in which the sparkplug cables are placed. An insulator sheet is embedded in the insulator base. An electrode layer is provided on an upper surface of the insulator base along the grooves to form a static capacity between the electrode layer and the sparkplug cables when the voltage is applied across the spark plugs. On a lower surface of the insulator sheet an electrical shield layer is provided connected to the internal combustion engine by a ground wire. A lead wire electrically connects the electrode plate to a microcomputer so as to analyze the engine burning condition based on the static capacity between the electrode plate and the sparkplug cables.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: August 6, 1996
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Shigeru Miyata, Yoshitaka Yamada, Hideji Yoshida, Yoshihiro Matsubara, Yasuo Ito
  • Patent number: 5526134
    Abstract: An original image signal is encoded into an image code signal of a predetermined format through an approximation process on colors. A first luminance component is derived from the image code signal. A second luminance component is derived from the original image signal. A difference between the first luminance component and the second luminance component is derived. The difference is converted into a luminance corrective signal. The image code signal and the luminance corrective signal are transmitted via a common transmission line. In a decoder, the luminance corrective signal is decoded to a luminance difference signal, which is added to an image signal decoded from the image code signal.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: June 11, 1996
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Tsuneo Furuki, Yasuo Ito, Kazuo Hikawa