Patents by Inventor Toshio Kasai

Toshio Kasai 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).

  • Publication number: 20100136705
    Abstract: A method for measuring only a concentration of a peroxycarboxylic acid in an equilibrium mixture containing peroxycarboxylic acid and hydrogen peroxide, comprising the following steps a) and b); a) adding potassium iodide to the equilibrium mixture to cause the generation of iodine and providing the resulting mixture as a measurement sample; and b) measuring the amount of light that goes through the measurement sample to determine only the concentration of a peroxycarboxylic acid.
    Type: Application
    Filed: April 25, 2008
    Publication date: June 3, 2010
    Inventors: Sachiko Kojima, Taro Furuta, Toshio Kasai, Dock-Chil Che
  • Patent number: 7440604
    Abstract: An image detector for bank notes is provided which can be made at low cost and in small size. The image detector comprises a pair of detector units 13 includes a first image detection sensor 24 which detects an image of a first detection area mounted on one side of a detector unit 18, a first light emitting device 27 which irradiates light towards the first detection area, and a second light emitting device 31 which irradiates light towards a second detection area mounted on one side of the unit main body 18 but in a different location from the first detection area, a pair of detector units is disposed so as to oppose one another across a bank note transportation path 12, in a manner which enables the image detection sensor 24 of one of the detection units 13 to detect an image of the second detection area of the other of the detection units 13.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: October 21, 2008
    Assignee: Laurel Precision Machines Co., Ltd.
    Inventors: Keiji Tsuji, Toshio Kasai, Wataru Iida, Tomoyoshi Zenki
  • Patent number: 7359543
    Abstract: An object is to provide an image detector for bank notes which enables the cost to be lowered.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: April 15, 2008
    Assignee: Laurel Precision Machines Co., Ltd.
    Inventors: Keiji Tsuji, Toshio Kasai, Tomoyoshi Zenki
  • Publication number: 20060049344
    Abstract: A laser scanning device is provided. The laser scanning device includes a light source that emits light, a scanning unit that scans the light from the light source to form a beam scanning in a predetermined direction, a first light receiving unit that receives a portion of the light from the light source to generate a first light reception signal when the portion of the light is received, and a second light receiving unit that receives the beam emerged from the scanning unit to generate a second light reception signal when the beam is received. The first and second light receiving units are integrally formed with the light source.
    Type: Application
    Filed: September 2, 2005
    Publication date: March 9, 2006
    Applicant: PENTAX Corporation
    Inventor: Toshio Kasai
  • Publication number: 20060045149
    Abstract: A laser scanning device that scans a laser beam on a photosensitive surface includes a laser emitting system, a first board mounting the laser emitting system, a laser scanning system configured to receive the laser beam emitted from the laser emitting system and scan the laser beam in a scanning direction, a laser detecting system configured to detect the laser beam to output laser detecting signals, and a second board mounting the laser detecting system. The laser emitting system is adapted to emit the laser beam in a direction substantially parallel to the surface of the first board. The laser detecting system is adapted to detect the laser beam coming from a direction parallel to the surface of the first board. Each of the first and second boards is arranged with the surface thereof substantially parallel to the scanning direction.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 2, 2006
    Applicant: PENTAX Corporation
    Inventor: Toshio Kasai
  • Publication number: 20050074046
    Abstract: There is provided a light emitting device, which is provided with a light emitting element that emits light, a driving circuit that drives the light emitting device, and a package that accommodates the light emitting device and the driving circuit.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 7, 2005
    Applicant: PENTAX Corporation
    Inventor: Toshio Kasai
  • Publication number: 20040240721
    Abstract: An image detector for bank notes is provided which can be made at low cost and in small size. The image detector comprises a pair of detector units 13 includes a first image detection sensor 24 which detects an image of a first detection area mounted on one side of a detector unit 18, a first light emitting device 27 which irradiates light towards the first detection area, and a second light emitting device 31 which irradiates light towards a second detection area mounted on one side of the unit main body 18 but in a different location from the first detection area, a pair of detector units is disposed so as to oppose one another across a bank note transportation path 12, in a manner which enables the image detection sensor 24 of one of the detection units 13 to detect an image of the second detection area of the other of the detection units 13.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 2, 2004
    Inventors: Keiji Tsuji, Toshio Kasai, Wataru Iida, Tomoyoshi Zenki
  • Publication number: 20040240722
    Abstract: An object is to provide an image detector for bank notes which enables the cost to be lowered.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 2, 2004
    Inventors: Keiji Tsuji, Toshio Kasai, Tomoyoshi Zenki
  • Publication number: 20040223203
    Abstract: A laser scanning device is provided with a laser source which emits a laser beam, a deflector which dynamically deflects the laser beam emitted by the laser source, the laser beam scanning in a main scanning direction within a predetermined angular area, a photodetector which receives light and output electronic signal corresponding to the received light, and a sensor lens arranged to receive the laser beam scanning at a predetermined scanning range, the sensor lens having power at least in the main scanning direction, the sensor lens converging the incident laser beam on the photodetector, the sensor lens having width in the main scanning direction varying in the auxiliary scanning direction.
    Type: Application
    Filed: February 12, 2004
    Publication date: November 11, 2004
    Applicant: PENTAX Corporation
    Inventors: Toshio Kasai, Tadashi Minakuchi, Shoji Iwazaki, Hiroto Watanabe, Tadaaki Suda, Hiroyuki Basho, Nobuyuki Hori
  • Publication number: 20030103535
    Abstract: A guide member provided between at least one light emitting element located at a predetermined position and a circuit board, the light emitting element is provided with a plurality of lead wires, the circuit board is provided with a plurality of insertion holes in which a plurality of the lead wires of the light emitting element are inserted, respectively, and the guide member is provided with a plurality of guide holes through which each lead wire of the light emitting element is guided into each corresponding insertion hole of the plurality of insertion holes of the circuit board. A mounting method for mounting the light emitting element is also disclosed.
    Type: Application
    Filed: November 26, 2002
    Publication date: June 5, 2003
    Applicant: PENTAX Corporation
    Inventor: Toshio Kasai
  • Patent number: 6440187
    Abstract: Production of an alumina powder characterized by having a single or multiple crystal structure selected from the group consisting of &ggr;, &dgr; and &thgr;-forms, a primary particle size of 10 to 50 nm, a mean secondary particle size of 100 to 500 nm, and a granular primary particle shape, or an alumina powder characterized by having an a-form crystal structure, a primary particle size of 60 to 150 nm, a mean secondary particle size of 200 to 500 nm, and a granular primary particle shape, using as a raw material an alumina hydrate comprising rectangular plate-like primary particles having a boehmite structure and having a length of one side of 10 to 50 nm; and preparation of a polishing composition comprising the alumina powder, water and a polishing accelerator.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: August 27, 2002
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Toshio Kasai, Kiyomi Ema, Isao Ota, Tohru Nishimura
  • Patent number: 6372003
    Abstract: According to the present invention, a process is provided for producing crystalline ceric oxide particles having a particle diameter of 0.005 to 5 &mgr;m, which comprises the steps of reacting a cerium (III) salt with an alkaline substance in an (OH)/(Ce3+) molar ratio of 3 to 30 in an aqueous medium in an inert gas atmosphere to produce a suspension of cerium (III) hydroxide, and blowing oxygen or a gas containing oxygen into the suspension at a temperature of 10 to 95° C. and at an atmospheric pressure.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: April 16, 2002
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Toshio Kasai, Isao Ota, Takao Kaga, Tohru Nishimura, Kenji Tanimoto
  • Patent number: 6350978
    Abstract: A deterioration sensing device comprises a laser diode (LD), a voltage-current converter supplying electric current to the LD to radiate a laser beam which is received by a photo-diode, and an APC circuit outputting electric voltage in accordance with the intensity of the laser beam sensed by the photo-diode. The voltage-current converter is controlled based on the electric voltage so that the intensity of the laser beam is kept constant. An LD deterioration circuit is provided with a comparator, in which the electric voltage is compared with a reference voltage. An LD deterioration control unit is provided in the LD deterioration circuit to output a deterioration signal when the electric voltage becomes higher than the reference voltage, so that an alarm, indicating that the LD has deteriorated, is output, and the electric current supplied to the LD is decreased.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: February 26, 2002
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Toshio Kasai
  • Patent number: 6246705
    Abstract: An optical scanning device is provided with a light source that emits a light beam, a driver that controls output power and modulation of the light beam emitted by the light source, a controller that transmits, to the driver, power control data and modulation data respectively used for controlling the output power and modulation of the light beam. The optical scanning device is further provided with a single data bus that connects the driver and the controller. The power control data and the modulation data being transmitted through the single data bus at different timing.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: June 12, 2001
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Toshio Kasai
  • Patent number: 6203589
    Abstract: The method disclosed here comprises the steps of (a) mixing metal powder, a resin, abrasive grains, and a solid reducing agent at the normal (room) temperature through the melting point of the reducing agent to form a mixture and (b) molding and baking the mixture at the melting point of the reducing agent through that of the metal powder. The solid reducing agent is a fatty acid, preferably stearic acid having a volume ratio of 5 to 20% with respect to the metal powder. With is, it is possible to make metal-resin bond grindstones that give such high-quality mirror surfaces that have conductivity fit for ELID grinding and are not liable to have chippings or scratches and also have an Rmax value of approximately 3 nm or less.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: March 20, 2001
    Assignee: Riken
    Inventors: Hitoshi Ohmori, Nobuhide Itoh, Toshio Kasai, Toshiro Karaki-Doy, Kenichiro Horio, Toshiaki Uno, Masayuki Ishii
  • Patent number: 6007592
    Abstract: A polishing composition for an aluminum disk includes water, an alumina abrasive agent and a polishing accelerator. The polishing accelerator is preferably basic aluminum nitrate. A process for polishing an aluminum disk using the polishing composition is also provided.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: December 28, 1999
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Toshio Kasai, Isao Ota, Takao Kaga, Tohru Nishimura
  • Patent number: 5962343
    Abstract: According to the present invention, a process is provided for producing crystalline ceric oxide particles having a particle diameter of 0.005 to 5 .mu.m, which comprises the steps of reacting a cerium (III) salt with an alkaline substance in an (OH)/(Ce.sup.3+) molar ratio of 3 to 30 in an aqueous medium in an inert gas atmosphere to produce a suspension of cerium (III) hydroxide, and blowing oxygen or a gas containing oxygen into the suspension at a temperature of 10 to 95.degree. C. and at an atmospheric pressure.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: October 5, 1999
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Toshio Kasai, Isao Ota, Takao Kaga, Tohru Nishimura, Kenji Tanimoto
  • Patent number: 5883731
    Abstract: Disclosed is a multi-beam laser scanning device which scans a surface to be scanned with a plurality of laser beams in accordance with an image data. Each image data includes driving pulses which periodically occur in each image data, and are representative of intensity of laser beams. Phase of the image signals are shifter with each other so that the driving pulses do not overlap within a period of the driving pulses.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: March 16, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Toshio Kasai
  • Patent number: 5543955
    Abstract: An optical scanning system has an image reading scanning system for emitting a first scanning beam of light to read an image of an object, an image forming scanning system for emitting a second scanning beam of light to form an image on a light receiving surface, and a light receiving element. Each of the first and second scanning beams is incident on the light receiving element when each of the first and second scanning beams is located at an end portion of a scanning area, and the first scanning beam and the second scanning beam have different optical characteristics. The optical scanning system also has a circuit for generating a horizontal synchronous signal for the image reading optical system and the image forming optical system, respectively, in accordance with light received by the light receiving element.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: August 6, 1996
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Yamazaki, Takashi Iizuka, Toshio Kasai
  • Patent number: 5408483
    Abstract: A laser beam emitting device is provided for use, for example, in a laser beam printer. The device includes a single laser diode for emitting a laser beam having an output power level that is dependent on a driving current supplied to the laser diode. Two laser diode drivers are connected to the single laser diode and can be individually energized to drive the single laser diode to emit a laser beam that can have different output power levels. A selector is connected to the drivers for producing one of a plurality of selecting signals corresponding to the different output power levels, respectively, to select and energize one of the drivers.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: April 18, 1995
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Toshio Kasai, Hiroto Watanabe, Yoshiyuki Araki