Patents by Inventor Yasuharu Iida

Yasuharu Iida 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: 9988542
    Abstract: The invention provides a tablet having a powdered or soft surface on which a dry-ink film of information for improving identifiability of the tablet is printed, and provides an ink for inkjet printers.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: June 5, 2018
    Assignee: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Tomoaki Ozaki, Hidekazu Kitada, Yasuharu Iida, Yoshio Hara, Takeshi Matsuda, Tadashi Mukai
  • Publication number: 20150203698
    Abstract: The invention provides a tablet having a powdered or soft surface on which a dry-ink film of information for improving identifiability of the tablet is printed, and provides an ink for inkjet printers.
    Type: Application
    Filed: July 17, 2013
    Publication date: July 23, 2015
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Tomoaki Ozaki, Hidekazu Kitada, Yasuharu Iida, Yoshio Hara, Takeshi Matsuda, Tadashi Mukai
  • Patent number: 6235099
    Abstract: A water-dispersed inkjet recording liquid excellent in water resistance and transparency and also excellent in the property of ejection from a nozzle, containing, as a colorant, a water-based dispersion of an organic pigment (A) which is at least one member selected from the group consisting of a quinacridone pigment, a benzimidazolone pigment, an insoluble azo pigment, a fuzed azo pigment, a quinophthalone pigment, a naphthol pigment, a perylene pigment and an isoindolinone pigment and has an average particle diameter of 10 to 150 nm (measured by laser scattering), the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture containing at least three components of the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A) and a water-soluble solvent (C) to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solv
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: May 22, 2001
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Seiji Aida, Tsutomu Fujigamori, Hisashi Uraki, Ichiro Toyoda, Sunao Satake, Seiji Sawada, Yasuharu Iida
  • Patent number: 6031024
    Abstract: An inkjet recording ink having excellent water resistance and having excellent ejection stability through a nozzle, which ink is obtained by dispersing colorant particles in a water-based liquid, the colorant particles being a product formed by coating each of resin particles having an average particle diameter of 50 to 300 nm with an organic pigment.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: February 29, 2000
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Hisashi Uraki, Seiji Sawada, Yasuharu Iida, Sunao Satake, Tsutomu Fujigamori, Seiji Aida
  • Patent number: 5972087
    Abstract: By use of recording liquid for water based inkjet with pigment and colloidal silica, it is possible to obtain prints print recorded on plain paper with good clearness and high quality and image of the print recorded material with sufficient water resistance and light resistance.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: October 26, 1999
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Hisashi Uraki, Ichiro Toyoda, Shigeyuki Ehashi, Seiji Aida, Yasuharu Iida, Seiji Sawada, Akio Sato
  • Patent number: 5928419
    Abstract: A surface-treated organic pigment excellent in initial dispersibility and long-term dispersion stability in water and an organic solvent and free from the coagulation of pigment particles, obtained by reacting a sulfonating agent with an organic pigment dispersed in a solvent in which the organic pigment is insoluble or sparingly soluble, and thereby introducing a sulfonic acid group to the surface of each particle of the organic pigment.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: July 27, 1999
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Toshiyuki Uemura, Tsukasa Iguchi, Sunao Satake, Hisashi Uraki, Yasuharu Iida
  • Patent number: 5913971
    Abstract: An inkjet ink having sufficient water resistance on a recording sheet but having excellent re-solubility in an ink in a head portion and excellent ejection stability through a nozzle, the inkject ink comprising an aqueous liquid, a pigment and a water-soluble resin, the water-soluble resin being a terpolymer obtained from acrylic acid, styrene and .alpha.-methyl styrene and having a weight average molecular weight of 2,000 to 8,000 and an acid value of 90 to 130, and a process for the production of the inkjet ink, which comprises preparing a concentrated aqueous dispersion of a pigment and a terpolymer obtained from acrylic acid, styrene and .alpha.-methylstyrene, adding water and an additive to the concentrated dispersion to dilute the concentrated dispersion and maintaining the diluted dispersion at a temperature between 60.degree. C. and 80.degree. C. for 5 to 48 hours.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: June 22, 1999
    Assignee: Tokyo Ink Manufacturing Co., Ltd.
    Inventors: Shinya Fujimatsu, Motonori Ando, Yasuharu Iida
  • Patent number: 5814685
    Abstract: The present invention relates to an aqueous ink jet recording liquid of a pigment type, which liquid has excellent stability and printing characteristics; and also to a process for the preparation of said liquid. The ink jet recording liquid of the present invention is obtained by dispersing a pigment and a resin in an aqueous medium. Said resin is an aqueous dispersion-type resin comprising a shell composed of a polymer having a glass transition point in the range of 50.degree. C. to 150.degree. C. and a core composed of a polymer having a glass transition point in the range of -100.degree. C. to 40.degree. C.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 29, 1998
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Sunao Satake, Seiji Sawada, Yasuharu Iida, Tsutomu Fujigamori
  • Patent number: 5772746
    Abstract: The present invention relates to an ink jet recording liquid obtained by dispersing a pigment in an aqueous medium, said aqueous medium comprising glycerol and 1,3-propanediol. The ink jet recording liquid of the present invention is capable of sustaining prolonged stable discharge onto the recording surface without clogging the nozzle of an ink jet printer and exhibits excellent storage stability.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: June 30, 1998
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Seiji Sawada, Sunao Satake, Yasuharu Iida, Seiji Aida, Yoshimitsu Ueno
  • Patent number: 5716435
    Abstract: A water-dispersed inkjet recording liquid excellent in water resistance and transparency and also excellent in the property of ejection from a nozzle, containing, as a colorant, a water-based dispersion of an organic pigment (A) having an average particle diameter of 10 to 150 nm (measured by laser scattering), the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture containing at least three components, said components being, the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A) and a water-soluble solvent (C) to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water, and a process for the production thereof.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: February 10, 1998
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Seiji Aida, Tsutomu Fujigamori, Hisashi Uraki, Ichiro Toyoda, Sunao Satake, Seiji Sawada, Yasuharu Iida
  • Patent number: 4923251
    Abstract: Apparatus for safely and efficiently removing a layer of asbestos or like material from a generally planar or corrugated ceiling surface, I-beams or the like is disclosed and comprises a head assembly including an outer cover having a first open portion adapted to face the asbestos layer and a second open portion communicating with suction means through asbestos collecting means, an open ended inner wall member mounted within the outer cover to define an air passage between the inner wall member and the outer cover, and a rotary wire brush mounted within the inner wall member and adapted to engage and remove the asbestos layer from the surfaces to be stripped. The apparatus also includes adjusting means for moving the head assembly to an operative position wherein the rotary wire brush is in scraping contact with the asbestos layer with a small gap present between the peripheral edge of the first open portion of the outer cover and the surface to be stripped.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: May 8, 1990
    Assignees: Sato Kogyo Co., Ltd., Maruma Technica Co., Ltd.
    Inventors: Naoyoshi Funakawa, Yasuharu Iida, Yasumitsu Moriki, Masahiro Sakurai