Patents by Inventor Yoshiyuki Iwasaki

Yoshiyuki Iwasaki 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: 9417718
    Abstract: The input apparatus with force feedback includes an operating unit that includes an operating surface, a detecting unit that detects an operation performed on the operating surface, a drive member that drives the operating unit, an elastic member that elastically supports the operating unit, and a base unit that holds the drive member. The drive member includes a solenoid that vertically drives an actuator connected to the operating unit and a casing member that holds the solenoid and the actuator. The actuator vertically penetrates through the casing member. The actuator includes a first damping member able to be brought into contact with a lower surface of the operating unit and a second damping member disposed between a lower surface of the casing member and part of the actuator. The second damping member is brought into contact with the actuator and the casing member as the actuator is driven.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 16, 2016
    Assignee: ALPS ELECTRIC CO., LTD.
    Inventors: Shinji Ishikawa, Hiroshi Wakuda, Yukiharu Hayashi, Hajime Suzuki, Yoshiyuki Iwasaki, Tomohiro Shiine
  • Publication number: 20150357132
    Abstract: The input apparatus with force feedback includes an operating unit that includes an operating surface, a detecting unit that detects an operation performed on the operating surface, a drive member that drives the operating unit, an elastic member that elastically supports the operating unit, and a base unit that holds the drive member. The drive member includes a solenoid that vertically drives an actuator connected to the operating unit and a casing member that holds the solenoid and the actuator. The actuator vertically penetrates through the casing member. The actuator includes a first damping member able to be brought into contact with a lower surface of the operating unit and a second damping member disposed between a lower surface of the casing member and part of the actuator. The second damping member is brought into contact with the actuator and the casing member as the actuator is driven.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Shinji Ishikawa, Hiroshi Wakuda, Yukiharu Hayashi, Hajime Suzuki, Yoshiyuki Iwasaki, Tomohiro Shiine
  • Patent number: 7271216
    Abstract: The present invention provides an isocyanate group terminated prepolymer aqueous dispersion (A) that is composed of water and an isocyanate group terminated prepolymer (a) dispersed in the water, whose content in the (A) is in a range of 60 wt % to 85 wt %, wherein the (A) optionally contains a-surfactant in a range of 0 wt % to 10 wt % based on a weight of the (a), and a solvent in a range of 0 ppm to 5,000 ppm based on the weight of the (a). The present invention also provides a polyurethane resin aqueous dispersion (B) that is composed of a polyurethane resin (b), whose content in the (B) is in a range of 20 wt % to 65 wt %, wherein the (b) is obtained by a chain extension reaction of the (A). The present invention is capable of providing a polyurethane resin aqueous dispersion having excellent storage stability.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: September 18, 2007
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Tadashi Tanaka, Yoshiyuki Iwasaki, Yoshio Kobayashi, Yoshiyuki Ueno
  • Patent number: 7087669
    Abstract: Absorbents comprising an water-absorbable resin and water-insoluble nonporous spherical monoparticles having an average diameter of 1 to 50 nm; a process for producing these absorbent by mixing the spherical monoparticles, which have been solubilized in water, with dry powdery particles of the water-absorbable resin; absorbable constructs composed of the above absorbent with a matrix wherein the amount of the absorbent ranges from 30 to 95% by weight based on the absorbable construct; and absorbable articles provided with the absorbable construct, a liquid-permeable sheet and an air-permeable back sheet. These absorbents, absorbable constructs and absorbable articles are excellent in the diffusion/absorption speed and absorption amount of a liquid within the resin even in case of absorbing a liquid containing water-insoluble or hardly water-soluble matters such as menstrual blood or feces.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: August 8, 2006
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yoshihisa Ota, Yoshiyuki Iwasaki
  • Publication number: 20060111510
    Abstract: The present invention provides an isocyanate group terminated prepolymer aqueous dispersion (A) that is composed of water and an isocyanate group terminated prepolymer (a) dispersed in the water, whose content in the (A) is in a range of 60 wt % to 85 wt %, wherein the (A) optionally contains a-surfactant in a range of 0 wt % to 10 wt % based on a weight of the (a), and a solvent in a range of 0 ppm to 5,000 ppm based on the weight of the (a). The present invention also provides a polyurethane resin aqueous dispersion (B) that is composed of a polyurethane resin (b), whose content in the (B) is in a range of 20 wt % to 65 wt %, wherein the (b) is obtained by a chain extension reaction of the (A). The present invention is capable of providing a polyurethane resin aqueous dispersion having excellent storage stability.
    Type: Application
    Filed: February 25, 2003
    Publication date: May 25, 2006
    Applicant: Sanyo Chemical Industries, LTD.
    Inventors: Tadashi Tanaka, Yoshiyuki Iwasaki, Yoshio Kobayashi, Yoshiyuki Ueno
  • Patent number: 6951911
    Abstract: A crosslinked polymer (A) which comprises, as essential structural units, units derived from (a) one or more vinyl monomers selected from the group consisting of water-soluble vinyl monomers and/or vinyl monomers which become water-soluble upon hydrolysis and units derived from (b) a crosslinking agent and which satisfies the following requirements: (1): (X)?25 g/g, (2): (Y)?15 g/g, and (3): (Y)??0.54 (X)+41. It has exceedingly high water retentivity and exceedingly high absorbing power under load. When applied to an absorbent structure and an absorbent article, the polymer has excellent absorbing performance. In the relationships, (X) is the amount of physiological saline retained through 1-hour absorption and (Y) is the amount of physiological saline absorbed through 1-hour standing under a load of 60 g/cm2.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: October 4, 2005
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Daisuke Tagawa, Tatsuya Asai, Yoshiyuki Iwasaki, Yoshihisa Ota, Keiji Tanaka
  • Publication number: 20040024104
    Abstract: Absorbents comprising an water-absorbable resin and water-insoluble nonporous spherical monoparticles having an average diameter of 1 to 50 nm; a process for producing these absorbent by mixing the spherical monoparticles, which have been solubilized in water, with dry powdery particles of the water-absorbable resin; absorbable constructs composed of the above absorbent with a matrix wherein the amount of the absorbent ranges from 30 to 95% by weight based on the absorbable construct; and absorbable articles provided with the absorbable construct, a liquid-permeable sheet and an air-permeable back sheet. These absorbents, absorbable constructs and absorbable articles are excellent in the diffusion/absorption speed and absorption amount of a liquid within the resin even in case of absorbing a liquid containing water-insoluble or hardly water-soluble matters such as menstrual blood or feces.
    Type: Application
    Filed: July 7, 2003
    Publication date: February 5, 2004
    Inventors: Yoshihisa Ota, Yoshiyuki Iwasaki
  • Publication number: 20030078349
    Abstract: A crosslinked polymer (A) which comprises, as essential structural units, units derived from (a) one or more vinyl monomers selected from the group consisting of water-soluble vinyl monomers and/or vinyl monomers which become water-soluble upon hydrolysis and units derived from (b) a crosslinking agent and which satisfies the following requirements: (1): (X)≧25 g/g, (2): (Y)≧15 g/g, and (3): (Y)≧−0.54 (X)+41. It has exceedingly high water retentivity and exceedingly high absorbing power under load. When applied to an absorbent structure and an absorbent article, the polymer has excellent absorbing performance. In the relationships, (X) is the amount of physiological saline retained through 1-hour absorption and (Y) is the amount of physiological saline absorbed through 1-hour standing under a load of 60 g/cm2.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 24, 2003
    Inventors: Daisuke Tagawa, Tatsuya Asai, Yoshiyuki Iwasaki, Yoshihisa Ota, Keiji Tanaka
  • Patent number: 6284362
    Abstract: An absorbent composition is produced by drying a mixture obtained by mixing a micro-filler (B) with a hydrogel having a water absorptive resin (A) and water. The hydrogel is produced by performing polymerization to produce the resin (A) and not drying the resin (A) after the polymerization. The absorbent composition has a specific surface area at least 10% lager than that of a reference composition produced by drying the hydrogel without the micro-filler (B).
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: September 4, 2001
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Hitoshi Takai, Tsuyoshi Yuki, Shingo Mukaida, Daisuke Tagawa, Kenji Tanaka, Keiji Tanaka, Satoshi Tamabuchi, Yoshiyuki Iwasaki