Patents by Inventor Tsutomu Ikeda
Tsutomu Ikeda 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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Publication number: 20060177921Abstract: The present invention provides a method for removing unsaturated uronic acid contained in chemical pulp for papermaking, characterized by adding glucuronidase. According to the preferred embodiment of the present invention, in an ECF or TCF bleaching method using no molecular chlorine, unsaturated uronic acid can be reduced while controlling a bleaching cost, and a brightness reversion property of pulp can be improved.Type: ApplicationFiled: February 6, 2006Publication date: August 10, 2006Inventors: Hiroshi Ohi, Shigeki Yoshida, Yuko Aoki, Yasuyuki Kawabata, Tomoya Yokoyama, Tsutomu Ikeda
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Publication number: 20060125776Abstract: There is a demand for preventing display quality of a display apparatus from deteriorating. When charged particles (9) are attracted to a first electrode (3), the distribution density may not become uniform over the entire area A1 and only the distribution density in the periphery of the first electrode (3) (see reference numeral A3) may be locally reduced. The present invention places a colored layer (5) having the same color as the color of charged particles in this area A3. Therefore, even if the distribution density is low, the low density is hardly visually recognized, making it possible to prevent the display quality from deteriorating.Type: ApplicationFiled: April 21, 2004Publication date: June 15, 2006Applicant: Canon Kabushiki KaishaInventors: Takeshi Togano, Tsutomu Ikeda, Nobutaka Ukigaya
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Publication number: 20060124106Abstract: A sensor for a throttle control device. The throttle control device includes a throttle body. A throttle valve is disposed within an intake air channel defined within the throttle body. A speed or gear reduction mechanism is coupled between a motor and the throttle valve. A sensor detects the rotational position, i.e., the rotational angle, of the motor and has a movable section and a fixed sensing section. The movable section is attached to a rotary shaft of the motor, so that the movable section rotates as the rotary shaft rotates. The fixed sensing section is mounted to the throttle body and is disposed within the movable section. By detecting the rotation of the motor a computing section can accurately determine the degree of opening of the throttle valve. The sensor outputs the degree of opening of the throttle valve.Type: ApplicationFiled: February 6, 2006Publication date: June 15, 2006Inventors: Tsutomu Ikeda, Koji Yoshikawa, Sunao Kitamura
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Publication number: 20060119568Abstract: A particle movement type display device includes a plurality of pixels each of which is constituted by a first substrate and a second substrate disposed opposite to each other with a spacing therebetween, charged particles disposed between the first substrate and the second substrate, a first electrode and a second electrode disposed in contact with the spacing. An image is displayed by moving the charged particles under application of an electric field between the first electrode and the second electrode. The first electrode is formed on the first substrate at a part of a portion corresponding to each pixel and a non-electrode forming portion at which the first electrode is not formed is provided on the first substrate.Type: ApplicationFiled: December 5, 2005Publication date: June 8, 2006Applicant: Canon Kabushiki KaishaInventor: Tsutomu Ikeda
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Patent number: 7042212Abstract: A rotational angle sensor detects a rotational angle of a rotary member based on a magnet field produced across the rotary member by a pair of magnets. At least one magnetic detection device is disposed within a holder and serves to detect the magnetic field and to output a signal representing the rotational angle of the rotary member. For example, the holder may be mounted to a fixed place. A printed circuit board is coupled to the holder and is electrically connected to the at least one magnetic detection device. A positioning device serves to position the at least one magnetic detection device in a predetermine position relative to the holder.Type: GrantFiled: October 4, 2004Date of Patent: May 9, 2006Assignee: Aisan Kogyo Kabushiki KaishaInventors: Koji Yoshikawa, Tsutomu Ikeda
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Patent number: 7032569Abstract: A throttle control device includes a throttle body that defines an intake air channel. A motor is coupled to a throttle shaft. As the motor is driven, the throttle valve rotates to open and close the intake air channel. A detection device serves to detect a degree of opening of the throttle valve and includes a pair of magnets and a sensor. The magnets are mounted to the throttle shaft via a magnet support and are positioned to oppose each other with respect to a rotational axis of the throttle shaft in order to produce a magnetic field. The sensor is mounted to the throttle body and serves to detect the magnetic field. The sensor comprises a sensing section and a computing section connected to each other. The sensing section may be inclined relative to the computing section in order to form a compact shape.Type: GrantFiled: May 6, 2004Date of Patent: April 25, 2006Assignee: Aisan Kogyo Kabushiki KaishaInventors: Tsutomu Ikeda, Koji Yoshikawa, Kazumasa Nakashima
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Patent number: 7011074Abstract: A sensor for a throttle control device. The throttle control device includes a throttle body. A throttle valve is disposed within an intake air channel defined within the throttle body. A speed or gear reduction mechanism is coupled between a motor and the throttle valve. A sensor detects the rotational position, i.e., the rotational angle, of the motor and has a movable section and a fixed sensing section. The movable section is attached to a rotary shaft of the motor, so that the movable section rotates as the rotary shaft rotates. The fixed sensing section is mounted to the throttle body and is disposed within the movable section. By detecting the rotation of the motor a computing section can accurately determine the degree of opening of the throttle valve. The sensor outputs the degree of opening of the throttle valve.Type: GrantFiled: May 28, 2004Date of Patent: March 14, 2006Assignee: Aisan Kogyo Kabushiki KaishaInventors: Tsutomu Ikeda, Koji Yoshikawa, Sunao Kitamura
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Patent number: 6958842Abstract: A display device includes a first substrate and a second substrate disposed opposite to each other, and a display medium including an insulating liquid and electrophoretic colored particles dispersed therein and disposed between the first and second substrates. A first electrode and a second electrode are provided for applying a voltage to the display medium so as to move the colored particles between the first and second electrodes to effect a display depending on a voltage applied to the first and second electrodes. The electrophoretic colored particles are distributed uniformly without localization by incorporating the display medium in a plurality of light-transmissive tubes, and disposing and fixing the plurality of tubes in intimate contact with each other between the first and second substrates.Type: GrantFiled: August 16, 2004Date of Patent: October 25, 2005Assignee: Canon Kabushiki KaishaInventors: Naoko Miura, Taiko Motoi, Hiroshi Matsuda, Tsutomu Ikeda
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Patent number: 6950226Abstract: An electrophoretic display device including first and second substrates disposed with a predetermined spacing, a partition member disposed between the first and second substrates, a plurality of electrophoretic particles and an insulating liquid which are sealed up by the substrates and the partition member, and first and second electrodes disposed close to the insulating liquid, is produced through a production process comprising the following steps (A), (B), (C) and (D): (A) a step of filling the insulating liquid and the electrophoretic particles in a recess defined by the first substrate and the partition member, (B) a step of placing a first area of the second substrate to be in contact with the partition member in an uncured state and a second area of the second substrate to be in contact with the insulating liquid in a cured state, (C) a step of causing the first area of the second substrate to contact the partition member and the second area of the second substrate to contact the insulating liquid, anType: GrantFiled: March 18, 2004Date of Patent: September 27, 2005Inventors: Taro Endo, Tsutomu Ikeda
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Publication number: 20050174321Abstract: A system (apparatus and process) for producing an electrophoretic (display) device is provided for allowing production of such a device wherein charged phoretic particles in the dispersion liquid are easily and evenly distributed to respective cells (pixels) between two substrates of the device even in the case of a very small gap between the two substrates or the case of using a flexible substrate. The system includes a storage for a dispersion liquid containing the charged phoretic particles dispersed therein, a stirrer for stirring the dispersion liquid, a substrate-holder for holding the substrate in the dispersion liquid, and a voltage source for applying a voltage to the electrodes formed on the substrate thereby depositing the charged phoretic particles on the electrodes.Type: ApplicationFiled: February 22, 2005Publication date: August 11, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Tsutomu Ikeda, Nobutaka Ukigaya
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Patent number: 6922275Abstract: An electrophoretic display includes a first substrate disposed on a viewer side, a second substrate disposed at a predetermined spacing with the first substrate, a first electrode disposed on the first substrate side, a second electrode disposed on the second electrode side, liquid disposed at the predetermined spacing, and a plurality of charged particles dispersed in the liquid. The charged particles are movable by changing a polarity of a voltage applied between the first and second electrodes to effect display. The second electrode at a pixel has a surface area larger than that of the first electrode at the pixel.Type: GrantFiled: October 28, 2003Date of Patent: July 26, 2005Assignee: Canon Kabushiki KaishaInventor: Tsutomu Ikeda
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Publication number: 20050155575Abstract: A throttle control device includes a motor coupled to the throttle shaft, so that the throttle valve rotates to open and close an intake air channel as the motor is driven. A detection device serves to detect the degree of opening of the throttle valve and includes a pair of magnets and a sensor. The magnets are mounted to the throttle shaft via a magnet support and are positioned to oppose each other across the rotational axis of the throttle shaft in order to produce a uniform magnetic field. The sensor is mounted to the throttle body and serves to detect a direction of the magnetic field produced by the magnets, so that the detection device outputs a signal representing the degree of opening of the throttle valve.Type: ApplicationFiled: May 6, 2004Publication date: July 21, 2005Inventors: Tsutomu Ikeda, Koji Yoshikawa, Kazumasa Nakashima
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Patent number: 6919003Abstract: A system (apparatus and process) for producing an electrophoretic (display) device is provided for allowing production of such a device wherein electrophoretic particles in the dispersion liquid are easily and evenly distributed to respective cells (pixels) between two substrates of the device even in the case of a very small gap between the two substrates or the case of using a flexible substrate. The system includes a storage unit for a dispersion liquid containing the charged phoretic particles dispersed therein, a stirrer for stirring the dispersion liquid, a substrate-holder for holding the substrate in the dispersion liquid, and a voltage source for applying a voltage to the electrodes formed on the substrate thereby depositing the electrophoretic particles on the electrodes.Type: GrantFiled: March 23, 2001Date of Patent: July 19, 2005Assignee: Canon Kabushiki KaishaInventors: Tsutomu Ikeda, Nobutaka Ukigaya
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Patent number: 6897996Abstract: An electrophoretic display device is configured to move charged particles between a display electrode surface and a cell wall surface and provides a solution to a problem that many charged particles are collected at the edge of the display electrode to degrade display contrast. The electrophoretic display device is arranged to move the charged particles between the display electrode surface and the side face of the cell wall and the vicinity thereof to implement display, and the second electrode is disposed on a lower face of the cell wall or in the vicinity of the lower face, thereby allowing the particles to be located on the surface of the cell wall. Another electrophoretic display device is provided which has a structure wherein all or part of the display electrode has a protruding shape.Type: GrantFiled: September 5, 2002Date of Patent: May 24, 2005Assignee: Canon Kabushiki KaishaInventors: Tsutomu Ikeda, Nobutaka Ukigaya, Koichi Ishige
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Publication number: 20050073299Abstract: A rotational angle sensor detects a rotational angle of a rotary member based on a magnet field produced across the rotary member by a pair of magnets. At least one magnetic detection device is disposed within a holder and serves to detect the magnetic field and to output a signal representing the rotational angle of the rotary member. For example, the holder may be mounted to a fixed place. A printed circuit board is coupled to the holder and is electrically connected to the at least one magnetic detection device. A positioning device serves to position the at least one magnetic detection device in a predetermine position relative to the holder.Type: ApplicationFiled: October 4, 2004Publication date: April 7, 2005Inventors: Koji Yoshikawa, Tsutomu Ikeda
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Patent number: 6876476Abstract: A display device includes a first substrate and a second substrate disposed opposite to each other, and a display medium including an insulating liquid and electrophoretic colored particles dispersed therein and disposed between the first and second substrates. A first electrode and a second electrode are provided for applying a voltage to the display medium so as to move the colored particles between the first and second electrodes to effect a display depending on a voltage applied to the first and second electrodes. The electrophoretic colored particles are distributed uniformly without localization by incorporating the display medium in a plurality of light-transmissive tubes, and disposing and fixing the plurality of tubes in intimate contact with each other between the first and second substrates.Type: GrantFiled: May 18, 2000Date of Patent: April 5, 2005Assignee: Canon Kabushiki KaishaInventors: Naoko Miura, Taiko Motoi, Hiroshi Matsuda, Tsutomu Ikeda
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Publication number: 20050012981Abstract: A display device includes a first substrate and a second substrate disposed opposite to each other, and a display medium including an insulating liquid and electrophoretic colored particles dispersed therein and disposed between the first and second substrates. A first electrode and a second electrode are provided for applying a voltage to the display medium so as to move the colored particles between the first and second electrodes to effect a display depending on a voltage applied to the first and second electrodes. The electrophoretic colored particles are distributed uniformly without localization by incorporating the display medium in a plurality of light-transmissive tubes, and disposing and fixing the plurality of tubes in intimate contact with each other between the first and second substrates.Type: ApplicationFiled: August 16, 2004Publication date: January 20, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Naoko Miura, Taiko Motoi, Hiroshi Matsuda, Tsutomu Ikeda
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Publication number: 20040244772Abstract: A sensor for a throttle control device. The throttle control device includes a throttle body. A throttle valve is disposed within an intake air channel defined within the throttle body. A speed or gear reduction mechanism is coupled between a motor and the throttle valve. A sensor detects the rotational position, i.e., the rotational angle, of the motor and has a movable section and a fixed sensing section. The movable section is attached to a rotary shaft of the motor, so that the movable section rotates as the rotary shaft rotates. The fixed sensing section is mounted to the throttle body and is disposed within the movable section. By detecting the rotation of the motor a computing section can accurately determine the degree of opening of the throttle valve. The sensor outputs the degree of opening of the throttle valve.Type: ApplicationFiled: May 28, 2004Publication date: December 9, 2004Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Tsutomu Ikeda, Koji Yoshikawa, Sunao Kitamura
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Publication number: 20040231644Abstract: A throttle control device includes a throttle body that defines an intake air channel. A motor is coupled to a throttle shaft. As the motor is driven, the throttle valve rotates to open and close the intake air channel. A detection device serves to detect a degree of opening of the throttle valve and includes a pair of magnets and a sensor. The magnets are mounted to the throttle shaft via a magnet support and are positioned to oppose each other with respect to a rotational axis of the throttle shaft in order to produce a magnetic field. The sensor is mounted to the throttle body and serves to detect the magnetic field. The sensor comprises a sensing section and a computing section connected to each other. The sensing section may be inclined relative to the computing section in order to form a compact shape.Type: ApplicationFiled: May 6, 2004Publication date: November 25, 2004Applicant: Aisan Kogyo Kabushiki KaishaInventors: Tsutomu Ikeda, Koji Yoshikawa, Kazumasa Nakashima
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Publication number: 20040223209Abstract: An electrophoretic display device including first and second substrates disposed with a predetermined spacing, a partition member disposed between the first and second substrates, a plurality of electrophoretic particles and an insulating liquid which are sealed up by the substrates and the partition member, and first and second electrodes disposed close to the insulating liquid, is produced through a production process comprising the following steps (A), (B), (C) and (D): (A) a step of filling the insulating liquid and the electrophoretic particles in a recess defined by the first substrate and the partition member, (B) a step of placing a first area of the second substrate to be in contact with the partition member in an uncured state and a second area of the second substrate to be in contact with the insulating liquid in a cured state, (C) a step of causing the first area of the second substrate to contact the partition member and the second area of the second substrate to contact the insulating liquid, anType: ApplicationFiled: March 18, 2004Publication date: November 11, 2004Inventors: Taro Endo, Tsutomu Ikeda