Patents by Inventor Junichi Ishikawa

Junichi Ishikawa 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: 7385216
    Abstract: A sensor device for detecting wetting on a windshield includes a light emission element for emitting a light, a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield, and a second light reception element for receiving the light in a second light path that does not include reflective redirection by the windshield. The sensor device uses a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element to determine wetting on the windshield.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: June 10, 2008
    Assignee: Denso Corporation
    Inventors: Taketoshi Yoshigoe, Junichi Ishikawa, Taiji Morishita
  • Patent number: 7345135
    Abstract: The invention provides a crosslinkable aromatic resin having a protonic acid group and a crosslinkable group, suitable for electrolytic membranes and binders used in fuel cells, etc., and electrolytic polymer membranes, binders and fuel cells using the resin. The crosslinkable aromatic resin has a crosslinkable group, which is not derived from the protonic acid group and can form a polymer network without any elimination component. This resin exhibits excellent ion conductivity, heat resistance, water resistance, adhesion property and low methanol permeability. Preferably, the crosslinkable group is composed of a C1 to C10 alkyl group directly bonded to the aromatic ring and/or an alkylene group having 1 to 3 carbon atoms in the main chain in which at least one carbon atom directly bonded to the aromatic ring bonds to hydrogen, and a carbonyl group, or a carbon-carbon double bond or triple bond.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: March 18, 2008
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Junichi Ishikawa, Takashi Kuroki, Satoko Fujiyama, Takehiko Omi, Tomoyuki Nakata, Yuichi Okawa, Kazuhisa Miyazaki, Shigeharu Fujii, Shoji Tamai
  • Publication number: 20070292733
    Abstract: This invention provides a binder for a fuel cell which has high adhesion, low methanol solubility, high methanol permeability and high proton conductivity, a composition for electrode formation, an electrode for a fuel cell, and a fuel cell using them. The binder is particularly suitable for a binder for a direct methanol type fuel cell which requires high proton conductivity. The binder for a fuel cell comprises a block copolymer which comprises a block having a repeating structural unit of a divalent aromatic group that contains a protonic acid group and a block having a repeating structural unit of a divalent aromatic group that does not contain a protonic acid group, and which has a glass transition temperature (Tg) of 180° C. or less. In particular, it is preferable that the block copolymer has an ion exchange group equivalent of from 200 to 1,000 g/mole and a weight retention ratio of 90% or more as measured by immersion in a 64 weight % aqueous methanol solution at 25° C. for 24 hours.
    Type: Application
    Filed: July 21, 2005
    Publication date: December 20, 2007
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Masahiro Toriida, Junichi Ishikawa, Takehiko Omi, Satoko Fujiyama, Kuniyuki Takamatsu, Shoji Tamai
  • Patent number: 7309873
    Abstract: A raindrop sensor includes a light-emitting element, a light-receiving element and a light guide body. The light-emitting element and the light-receiving element face a transparent panel. The light guide body, which is mounted on the transparent panel, includes an input lens, an input side dividing surface, an output lens and an output side dividing surface. The input lens collimates light emitted by the light-emitting element to form an input side collimated light beam. The output lens receives the collimated light beam, which is collimated by the input lens and is reflected by a reference surface of the transparent panel, to which the raindrop attaches. The output lens converges the reflected collimated light beam toward the light-receiving element. An intersection between an imaginary extension of the input side dividing surface and an imaginary extension of the output side dividing surface is located on the reference surface of the transparent panel.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: December 18, 2007
    Assignee: Denso Corporation
    Inventor: Junichi Ishikawa
  • Publication number: 20070222997
    Abstract: A raindrop detection device includes a first fixing member which is fixed to a windshield and has a first engagement portion, an inner housing in which a detection unit is accommodated, an outer housing in which the inner housing is accommodated and which is fixed to the inner housing, a second fixing member having a second engagement portion which is detachably engaged with the first engagement portion of the first fixing member, and a leaf spring which is engaged with the inner housing to press and bias the inner housing toward the windshield. The second fixing member has a leaf-spring biasing portion, which contacts the leaf spring to elastically bias the leaf spring toward the windshield at a predetermined pressing force.
    Type: Application
    Filed: February 14, 2007
    Publication date: September 27, 2007
    Applicant: Denso Corporation
    Inventors: Kouichi Gotoh, Junichi Ishikawa
  • Patent number: 7264121
    Abstract: An article holder for holding an article including a main body configured to receive the article, and at least one deformable article receiving member disposed on a bottom plate of the main body. The deformable article receiving member is configured to deform so as to change a receiving height of the article inserted in the main body.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: September 4, 2007
    Assignee: Kao Corporation
    Inventors: Junichi Ishikawa, Hidenori Shirai, Masatoshi Yokota
  • Publication number: 20070096560
    Abstract: A wiper control device for a vehicle with a wiper is disclosed that includes a day/night detecting device for detecting whether the vehicle is in day-like or night-like conditions. The device also includes a moisture detection device that detects a quantity of moisture on the vehicle and a controlling device that controls the wiping action of the wiper based on a wiping sensitivity to the quantity of moisture detected. The controlling device adjusts the wiping sensitivity between night-like wiping sensitivity and day-like wiping sensitivity. The controlling device adjusts wiping sensitivity to night-like wiping sensitivity when the day/night detecting device detects night-like conditions and to day-like wiping sensitivity when the day/night detecting device detects day-like conditions.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 3, 2007
    Applicant: DENSO CORPORATION
    Inventor: Junichi Ishikawa
  • Publication number: 20070034785
    Abstract: A sensor device for detecting wetting on a windshield includes a light emission element for emitting a light, a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield, and a second light reception element for receiving the light in a second light path that does not include reflective redirection by the windshield. The sensor device uses a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element to determine wetting on the windshield.
    Type: Application
    Filed: October 20, 2006
    Publication date: February 15, 2007
    Applicant: Denso Corporation
    Inventors: Taketoshi Yoshigoe, Junichi Ishikawa, Taiji Morishita
  • Publication number: 20060076477
    Abstract: A raindrop detection apparatus includes a light emitting unit for emitting light to an inner side of a windshield, a light receiving unit for receiving the light reflected by an outer surface of the windshield, a first lens unit which is arranged between the windshield and the light emitting unit to convert the light from the light emitting unit into parallel light, and a second lens unit which is arranged between the windshield and the light receiving unit to converge the reflected light at the light receiving unit. The second lens unit is larger than a radial cross section of the reflected light. An amount of raindrop landed on the outer surface of the windshield is detected based on an intensity of the light received by the light receiving unit.
    Type: Application
    Filed: September 22, 2005
    Publication date: April 13, 2006
    Applicant: Denso Corporation
    Inventor: Junichi Ishikawa
  • Publication number: 20060076524
    Abstract: A sensor device for detecting wetting on a windshield includes a light emission element for emitting a light, a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield, and a second light reception element for receiving the light in a second light path that does not include reflective redirection by the windshield. The sensor device uses a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element to determine wetting on the windshield.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 13, 2006
    Applicant: Denso Corporation
    Inventors: Taketoshi Yoshigoe, Junichi Ishikawa, Taiji Morishita
  • Publication number: 20060043322
    Abstract: A raindrop sensor includes a light-emitting element, a light-receiving element and a light guide body. The light-emitting element and the light-receiving element face a transparent panel. The light guide body, which is mounted on the transparent panel, includes an input lens, an input side dividing surface, an output lens and an output side dividing surface. The input lens collimates light emitted by the light-emitting element to form an input side collimated light beam. The output lens receives the collimated light beam, which is collimated by the input lens and is reflected by a reference surface of the transparent panel, to which the raindrop attaches. The output lens converges the reflected collimated light beam toward the light-receiving element. An intersection between an imaginary extension of the input side dividing surface and an imaginary extension of the output side dividing surface is located on the reference surface of the transparent panel.
    Type: Application
    Filed: August 30, 2005
    Publication date: March 2, 2006
    Applicant: DENSO CORPORATION
    Inventor: Junichi Ishikawa
  • Publication number: 20040191602
    Abstract: The invention provides a crosslinkable aromatic resin having a protonic acid group and a crosslinkable group, suitable for electrolytic membranes and binders used in fuel cells, etc., and electrolytic polymer membranes, binders and fuel cells using the resin. The crosslinkable aromatic resin has a crosslinkable group, which is not derived from the protonic acid group and can form a polymer network without any elimination component. This resin exhibits excellent ion conductivity, heat resistance, water resistance, adhesion property and low methanol permeability. Preferably, the crosslinkable group is composed of a C1 to C10 alkyl group directly bonded to the aromatic ring and/or an alkylene group having 1 to 3 carbon atoms in the main chain in which at least one carbon atom directly bonded to the aromatic ring bonds to hydrogen, and a carbonyl group, or a carbon-carbon double bond or triple bond.
    Type: Application
    Filed: April 9, 2004
    Publication date: September 30, 2004
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Junichi Ishikawa, Takashi Kuroki, Satoko Fujiyama, Takehiko Omi, Tomoyuki Nakata, Yuichi Okawa, Kazuhisa Miyazaki, Shigeharu Fujii, Shoji Tamai
  • Patent number: 6765631
    Abstract: A rain sensor includes an amplifier circuit that amplifies an output voltage from a photodiode and then provides this voltage signal to a CPU. The amplifier circuit conducts an offset amplification. The output voltage from the amplifier circuit is controlled to be at a predetermined level, for example, 3.0V, and the CPU detects rainfall based on the drop in the output voltage from the predetermined level, 3.0V. Then it becomes possible to improve sensor sensitivity, maintain a small sensor size, and a low manufacturing cost.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: July 20, 2004
    Assignee: Denso Corporation
    Inventors: Junichi Ishikawa, Masao Tokunaga
  • Patent number: 6686603
    Abstract: A raindrop detection apparatus has an amplifier circuit, including a plurality of resistors and resistor selection switches. The control circuit performs the first adjustment to an output of the amplifier circuit, roughly adjusting the output to a target value. The first adjustment is made by selecting one of or a combination of resistors. The control circuit then performs the second adjustment to the output, closely adjusting the output to the target value. The second adjustment is made by adjusting a driving instruction signal, which actually adjusts a light emitting device driving current. These adjustments are performed after an IG switch and an AUTO mode switch of a wiper switch are turned on.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: February 3, 2004
    Assignee: Denso Corporation
    Inventor: Junichi Ishikawa
  • Patent number: 6686992
    Abstract: A raindrop detecting apparatus has a temperature sensor, an EEPROM, a processor and a raindrop sensor. A temperature characteristic data is defined by a first temperature data of the temperature sensor and a first output data of the raindrop sensor produced at a first temperature condition, and stored in the EEPROM. The processor updates a raindrop detection threshold by using the stored characteristic data, a second temperature data and a second output data produced at a second temperature, when an engine is started under no-raindrop condition. The processor compares an output data of the raindrop sensor with the raindrop detection threshold to detect a raindrop, while converting at least one of the characteristic data and the output data in correspondence with a temperature data produced at a raindrop detection time.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: February 3, 2004
    Assignee: Denso Corporation
    Inventors: Shinji Wakabayashi, Junichi Ishikawa, Akira Kurahashi, Osamu Terakura
  • Publication number: 20030232191
    Abstract: The present invention provides: a unit-piece printing sheet which gives unit pieces having a smooth cut on the periphery thereof and can be subjected to printing on both front and back of the unit pieces, as well as a process for producing the unit-piece printing sheet. The unit-piece printing sheet comprises both front and back printing base materials laminated via a thermoplastic resin film adhesive layer, wherein each of the printing base materials is divided into sections by forming a slit at each facing position of the front and back printing base materials to form unit pieces, and the portion of the thermoplastic resin film adhesive layer at the slit-forming position is made a breakable connecting portion.
    Type: Application
    Filed: October 28, 2002
    Publication date: December 18, 2003
    Applicant: Washi Ishikawa Co., Ltd.
    Inventor: Junichi Ishikawa
  • Publication number: 20030217947
    Abstract: An article holder for holding an article including a main body configured to receive the article, and at least one deformable article receiving member disposed on a bottom plate of the main body. The deformable article receiving member is configured to deform so as to change a receiving height of the article inserted in the main body.
    Type: Application
    Filed: May 1, 2003
    Publication date: November 27, 2003
    Applicant: KAO CORPORATION
    Inventors: Junichi Ishikawa, Hidenori Shirai, Masatoshi Yokota
  • Publication number: 20030029237
    Abstract: A rain sensor includes an amplifier circuit that amplifies an output voltage from a photodiode and then provides this voltage signal to a CPU. The amplifier circuit conducts an offset amplification. The output voltage from the amplifier circuit is controlled to be at a predetermined level, for example, 3.0V, and the CPU detects rainfall based on the drop in the output voltage from the predetermined level, 3.0V. Then it becomes possible to improve sensor sensitivity, maintain a small sensor size, and a low manufacturing cost.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 13, 2003
    Inventors: Junichi Ishikawa, Masao Tokunaga
  • Patent number: 6476258
    Abstract: An industrially advantageous process for producing an aryloxyacetic acid represented by the formula (2): wherein m represents an integer of 1 or 2, n represents an integer from 0 to 4, Ar represents a aromatic hydrocarbon ring, each Rs independently represents an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, a cycloalkoxy group, an aryloxy group, a halogen atom, an alkylcarbonyl group, an arylcarbonyl group, a carboxyl group or a nitro group, comprising a step in which an oxygen-containing gas is made act on an aryloxyethanol represented by the formula (1): (R)n-Ar&Parenopenst;O—CH2.CH2.OH)m  (1) wherein m, n, Ar, and R, respectively, have the same meanings as defined above, under conditions of using a catalyst comprising palladium and an indium compound and/or a copper compound in an aqueous medium and in the presence of 0.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: November 5, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masashi Komatsu, Junichi Ishikawa
  • Publication number: 20020126015
    Abstract: A raindrop detection apparatus has an amplifier circuit, including a plurality of resistors and resistor selection switches. The control circuit performs the first adjustment to an output of the amplifier circuit, roughly adjusting the output to a target value. The first adjustment is made by selecting one of or a combination of resistors. The control circuit then performs the second adjustment to the output, closely adjusting the output to the target value. The second adjustment is made by adjusting a driving instruction signal, which actually adjusts a light emitting device driving current. These adjustments are performed after an IG switch and an AUTO mode switch of a wiper switch are turned on.
    Type: Application
    Filed: March 11, 2002
    Publication date: September 12, 2002
    Inventor: Junichi Ishikawa