Patents by Inventor Yuichi Ikeda

Yuichi 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).

  • Patent number: 5937087
    Abstract: An image having suitable color-tone and density is formed on a recording medium so that a full-color image of an excellent color-tone depending on a OHP can be projected, wherein a CCD separates colors of an original image to read it for converting into a RGB digital signal by an A/D conversion circuit, the process corresponding to a required image signal forming condition is executed by image process means for the digital signal to generate an image signal for outputting it to an LD driver, and a full-color image forming apparatus for forming a color image on a recording medium utilizing plural kinds of color materials based on the image signal comprises the image processing means for executing a gradation conversion process for the signals of C, M and Y in a LUT 1 circuit and executing a different gradation conversion process for a black signal Bk in a LUT 2 circuit different from a LUT 1 circuit.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: August 10, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuatsu Sasanuma, Tatsuo Takeuchi, Rie Saito, Yuichi Ikeda
  • Patent number: 5911694
    Abstract: An endoceliac physical quantity measuring apparatus comprises a contact adapted to touch an organic tissue, a vibrator connected mechanically to the contact, a frequency characteristic detecting circuit for detecting parameters associated with the frequency characteristics of the vibrator, load detecting means for detecting a load acting between the organic tissue and the contact, arithmetic means for computing physical quantities of the organic tissue on the basis of the parameters associated with the frequency characteristics detected by the frequency characteristic detecting circuit and the load detected by the load detecting means, and presentation means for presenting the physical quantities computed by the arithmetic means.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: June 15, 1999
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yuichi Ikeda, Akio Uchiyama
  • Patent number: 5859933
    Abstract: When a gradation test pattern is read a predetermined period of time after the gradation test pattern was fixed, the correction amount can be controlled based on a stable image density, and an image with good gradation characteristics can be formed. A gradation test pattern including all color patterns is output in accordance with a gradation test pattern registered in a test pattern memory area, and at the same time, a timer is started. After an elapse of a predetermined period of time stored in a RAM, the output gradation test pattern is read by an original reader. On the basis of the read image density, a .gamma.-LUT is set.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: January 12, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuatsu Sasanuma, Yuichi Ikeda
  • Patent number: 5856876
    Abstract: This invention has as its object to provide an image processing apparatus and method, which can obtain high image quality by adjusting an image forming parameter or parameters in consideration of a variation in image forming condition. In order to achieve the object, the gradation characteristics of an image to be recorded are adjusted on the basis of information obtained by forming a gradation characteristic adjustment test pattern on a recording medium, and reading the formed test pattern. Subsequently, the color reproduction characteristics of an image to be recorded are adjusted on the basis of information obtained by forming a color reproduction characteristic adjustment test pattern on a recording medium, and reading the formed test pattern.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: January 5, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuatsu Sasanuma, Kazuhito Ohashi, Masahiro Inoue, Yuichi Ikeda
  • Patent number: 5841011
    Abstract: Light-weight oil having a high octane number is produced from waste plastics containing phthalic polyester and/or polyvinyl chloride at a high yield without producing a phthalic sublimate or a carbonaceous residue by pyrolyzing the waste plastics in an atmosphere of steam or a steam/inert gas mixture. The resulting pyrolyzed oil and pyrolyzed gas may be catalytically cracked in an atmosphere of steam or a steam/inert gas mixture. Dechlorination may be performed before pyrolysis is carried out. Pyrolysis is preferably carried out in the presence of at least one of iron hydroxide, hydrous iron oxide and iron oxide.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: November 24, 1998
    Assignees: Kenji Hashimoto, NGK Insulators, Ltd
    Inventors: Kenji Hashimoto, Takao Masuda, Shuichi Yoshida, Yuichi Ikeda
  • Patent number: 5836897
    Abstract: An ultrasonic treatment apparatus comprises at least one hand piece, a plurality of probes, and an ultrasonic drive device. The hand piece has an ultrasonic oscillation device for generating ultrasonic vibration. Each probe is adapted to be attached to the hand piece and designed to transmit the ultrasonic vibration generated by the hand piece. The ultrasonic drive device is connected to the hand piece, for driving the ultrasonic oscillation device.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: November 17, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Hideo Nagazumi, Kazuya Hijii, Toshihiko Suzuta, Masahiro Kudo, Kenji Yoshino, Tetsumaru Kubota, Tatsuya Kubota, Hiroaki Kagawa, Yuichi Ikeda, Mitsumasa Okada, Hitoshi Karasawa, Tadao Hagino
  • Patent number: 5816098
    Abstract: A lifting load attitude controlling system includes a lifting load pivoting clutch (20) provided between a gyro frame (1) and a gimbal frame (6) for connecting and disconnecting therebetween. Also, a resetting rotating clutch is provided between a resetting rotation driving portion constituted of a resetting oblique rotation driving motor (19) for rotating a gimbal (8) upon returning the gimbal (8) at an initial position and a worm gear, and the gimbal (8) for connecting and disconnecting therebetween. Upon obliquely rotating the gimbal for returning to the initial position, the resetting rotating clutch is placed in the engaged or connected state and the lifting load pivoting clutch is placed in the disengaged or disconnected state. When the resetting rotation driving motor (19) is driven at this condition, a gyro moment is generated upon obliquely driving the gimbal toward the gyro frame (1) (lifting jig 4) via a variable constant torque motor (19) between the gyro frame (1) and a gimbal frame (6).
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: October 6, 1998
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hiroshi Kanki, Yoshitsugu Nekomoto, Tatsuya Wakisaka, Yasukuni Kamimura, Atsuhiro Doyama, Shuji Oyagi, Kazunari Fukuda, Yuichi Ikeda, Fumihiro Inoue, Koji Watanabe
  • Patent number: 5688235
    Abstract: An ultrasonic treatment apparatus comprises at least one hand piece, a plurality of probes, and an ultrasonic drive device. The hand piece has an ultrasonic oscillation device for generating ultrasonic vibration. Each probe is adapted to be attached to the hand piece and designed to transmit the ultrasonic vibration generated by the hand piece. The ultrasonic drive device is connected to the hand piece, for driving the ultrasonic oscillation device.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: November 18, 1997
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Hideo Nagazumi, Kazuya Hijii, Toshihiko Suzuta, Masahiro Kudo, Kenji Yoshino, Tetsumaru Kubota, Tatsuya Kubota, Hiroaki Kagawa, Yuichi Ikeda, Mitsumasa Okada, Hitoshi Karasawa, Tadao Hagino
  • Patent number: 5582588
    Abstract: An ultrasonic therapeutic apparatus comprising an apparatus body including a drive source for ultrasonic oscillation, a hand piece including an ultrasonic vibrator and removably connected to the apparatus body, a drive unit in the apparatus body for applying voltage to the ultrasonic vibrator of the hand piece, thereby driving the ultrasonic vibrator, a probe removably connected to the hand piece and adapted to be vibrated by ultrasonic vibration produced as the ultrasonic vibrator is driven, thereby treating organic tissue, a water supply unit for supplying cooling water to cool the probe, a suction unit for removing waste matter by suction from the organic tissue treated by means of the cooling water and the probe, an ultrasonic output setting section for setting a preset value for an ultrasonic output from the ultrasonic vibrator, a feedwater output setting section for setting a preset value for a feedwater output from the water supply unit, a feedwater output control section for controlling the feedwater
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: December 10, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Yukiko Nagaoka, Tetsumaru Kubota, Yuichi Ikeda
  • Patent number: 5579090
    Abstract: An object of the present invention is the forming over a long period of time of images that have a desirable density and gradation.According to the present invention, an image pattern, at the maximum image density, is formed on a photosensitive drum and read by a detection unit that incorporates an LED and a photosensor. Based on the read-out data, an image forming condition is corrected so that a maximum density is slightly higher than a target maximum density. Further, an image pattern that shows density gradations is formed on the photosensitive drum, and is read by the detection unit. Based on the read-out data, the image forming condition is corrected so that the gradation characteristic is stable.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: November 26, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuatsu Sasanuma, Yuichi Ikeda
  • Patent number: 5566372
    Abstract: An image forming apparatus performs excellent gradation control in a dense area in which gradation characteristics are non-linear. The image forming apparatus has a pattern forming unit which forms a gradation pattern on a recording member, and a read unit which reads the gradation pattern formed by the pattern forming unit. An adjusting unit adjusts image forming conditions on the basis of the gradation pattern read by the pattern read unit. In a density area in which gradation characteristics are non-linear, the number of steps of the gradation pattern is set to be larger than that in another density area.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: October 15, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichi Ikeda, Nobuatsu Sasanuma
  • Patent number: 5462522
    Abstract: An ultrasonic therapeutic apparatus comprising an apparatus body including a drive source for ultrasonic oscillation, a hand piece including an ultrasonic vibrator and removably connected to the apparatus body, a drive unit in the apparatus body for applying voltage to the ultrasonic vibrator of the hand piece, thereby driving the ultrasonic vibrator, a probe removably connected to the hand piece and adapted to be vibrated by ultrasonic vibration produced as the ultrasonic vibrator is driven, thereby treating organic tissue, a water supply unit for supplying cooling water to cool the probe, a suction unit for removing waste matter by suction from the organic tissue treated by means of the cooling water and the probe, an ultrasonic output setting section for setting a preset value for an ultrasonic output from the ultrasonic vibrator, a feedwater output setting section for setting a preset value for a feedwater output from the water supply unit, a feedwater output control section for controlling the feedwater
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: October 31, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Yukiko Nagaoka, Tetsumaru Kubota, Yuichi Ikeda
  • Patent number: 5391144
    Abstract: An ultrasonic treatment apparatus comprises at least one hand piece, a plurality of probes, and an ultrasonic drive device. The hand piece has an ultrasonic oscillation device for generating ultrasonic vibration. Each probe is adapted to be attached to the hand piece and designed to transmit the ultrasonic vibration generated by the hand piece. The ultrasonic drive device is connected to the hand piece, for driving the ultrasonic oscillation device.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: February 21, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Hideo Nagazumi, Kazuya Hijii, Toshihiko Suzuta, Masahiro Kudo, Kenji Yoshino, Tetsumaru Kubota, Tatsuya Kubota, Hiroaki Kagawa, Yuichi Ikeda, Mitsumasa Okada, Hitoshi Karasawa, Tadao Hagino
  • Patent number: 5387190
    Abstract: An ultrasonic aspirator has a probe having the inside path made an aspirating path by being provided on the base side with an ultrasonic vibrator. The probe is used as an ultrasonic vibration transmitting member and is in contact at the tip with an object within a body cavity to crush the object and to discharge the crushed object out of the probe through the aspirating path. A device, for detecting a break of the probe, is provided so that, when the probe breaks, the vibration of the above mentioned ultrasonic vibrator will be stopped by a signal from the detecting device.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: February 7, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Masakazu Gotanda, Tatsuya Kubota, Tetsumaru Kubota, Yuichi Ikeda, Toshihiko Hashiguchi, Hitoshi Karasawa, Tadao Hagino
  • Patent number: 5255669
    Abstract: An ultrasonic treatment apparatus includes an ultrasonic probe having an ultrasonic vibration generator for generating ultrasonic vibrations and a vibration transmission member for transmitting generated vibrations, and a sheath for covering at least an outer peripheral surface of the vibration transmission member of the ultrasonic probe, and a fluid supply unit, attached to an attaching portion of the sheath, for supplying a fluid into a path defined between the vibration transmission member and the sheath. A seal member for sealing the path is arranged nearer to the vibration generator than the attaching portion of the sheath.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: October 26, 1993
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tatsuya Kubota, Kazuya Hijii, Tetsumaru Kubota, Yuichi Ikeda
  • Patent number: 5211625
    Abstract: An ultrasonic treatment apparatus comprises a hand piece, and an RF power supply unit. The hand piece includes vibrator cover, a sheath connected thereto, a hollow cylindrical member, an ultrasonic vibrator in the cover for generating ultrasonic vibrations, a probe arranged in the sheath, for externally transmitting ultrasonic vibrations generated by the vibrator, and a cord for transmitting a high-frequency current from the RF power supply unit to the probe. The cover and sheath are composed of an insulating member, for preventing the high-frequency current transmitted by the probe from being externally leaked.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: May 18, 1993
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Tetsumaru Kubota, Tatsuya Kubota, Hiroaki Kagawa, Yuichi Ikeda, Mitsumasa Okada, Hitoshi Karasawa, Hideo Nagazumi, Kazuya Hijii, Toshihiko Suzuta, Masahiro Kudo, Kenji Yoshino, Tadao Hagino
  • Patent number: 5163433
    Abstract: An ultrasound type treatment apparatus includes an inner sheath covering an ultrasonic transmission member having a first suction passage and defining a space relative to the ultrasound transmission member and an outer sheath covering the inner sheath and defining a space relative to the inner sheath. In the treatment apparatus, a liquid medium supply passage is provided at one of the space between the ultrasound transmission member and the inner sheath and space between the inner sheet and the outer sheet to supply a liquid medium to the distal end of the ultrasound transmission member. A second suction passage is formed at the other of the space between the ultrasound transmission means and the inner sheath and space between the inner sheath and the outer sheath. The first suction passage is connected by a suction tube to the second suction passage.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: November 17, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hiroaki Kagawa, Tomohisa Sakurai, Tetsumaru Kubota, Hitoshi Karasawa, Tatsuya Kubota, Yuichi Ikeda, Mitsumasa Okada, Toshihiko Suzuta, Hideo Nagazumi, Kazuya Hijii, Masahiro Kudo, Kenji Yoshino, Tadao Hagino
  • Patent number: 5154723
    Abstract: A cerebral surgery endoscope apparatus comprises a stereotaxic instrument secured to the head of a patient and adapted to effect positioning of an affected part; an adjusted support means whose inserting direction is determined by its orientation to the stereotaxic instrument and which determines the direction in which a treating instrument is inserted into the head of the patient; a viewing device such as an endoscope supported on the support means and having a channel into which a treating instrument can be inserted, the treating instrument being inserted into a channel of the viewing device and then into the head of the patient. A fixing device is connected to the stereotaxic instrument and adapted to secure the support means, the viewing device and/or the treating instrument in a fixed position on with respect to the affected part.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: October 13, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tetsumaru Kubota, Hitoshi Karasawa, Yuichi Ikeda, Toshihiko Hashiguchi
  • Patent number: 5076276
    Abstract: An ultrasound type treatment apparatus includes an ultrasonic oscillation device for outputting an ultrasonic oscillation wave, a drive circuit for driving the ultrasonic oscillation device, a probe connected to the ultrasonic oscillation device to transmit that ultrasonic oscillation wave to an affected region of interest of a human being, a sheath formed around the probe, through which cooling medium is passed and a supply tank for supplying cooling medium to the sheath. In this treatment apparatus, an arithmetic operation circuit monitors a drive state of the ultrasonic oscillation device, a comparator is provided for receiving monitor information from the arithmetic operation circuit and for determining whether or not the supply of cooling medium to the sheath is normal and a controller is provided for stopping a drive of the ultrasonic oscillation device when the supply of the cooling medium is determined by the comparator as being not normal.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: December 31, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Tetsumaru Kubota, Hitoshi Karasawa, Tatsuya Kubota, Yuichi Ikeda, Mitsumasa Okada, Toshihiko Suzuta, Hideo Nagazumi, Kazuya Hijii, Masahiro Kudo, Hiroaki Kagawa, Kenji Yoshino, Tadao Hagino
  • Patent number: 5042460
    Abstract: An ultrasonic treating apparatus includes an inpedance detection unit for detecting the impedance of an ultrasonic vibration element for transmitting ultrasonic vibrations and a determining unit for determining whether the ultrasonic vibration element is good or not. If the ultrasonic vibration element is found not to be good, then a control unit inhibits ultrasonic vibrations from being generated from the ultrasonic vibration element. It is thus possible to prevent any breakage of the apparatus.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: August 27, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tomohisa Sakurai, Masakazu Gotanda, Toshihiko Suzuta, Tatsuya Kubota, Kazuya Hijii, Yuichi Ikeda, Hitoshi Karasawa, Hiroaki Kagawa, Eiichi Fuse, Tetsumaru Kubota, Tadao Hagino