Patents by Inventor Kazuhisa Doi

Kazuhisa Doi 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: 20160367584
    Abstract: An object of the present invention is to provide a protective agent for the keratoconjunctiva or a suppressive agent for a keratoconjunctival disorder having an excellent suppressive effect on a keratoconjunctival disorder. The invention relates to a protective agent for the keratoconjunctiva or a suppressive agent for a keratoconjunctival disorder containing glucosylglycerol as an active ingredient, use of glucosylglycerol for the manufacture of a pharmaceutical for protecting a keratoconjunctiva or suppressing a keratoconjunctival disorder and a method of protecting a keratoconjunctiva or suppressing a keratoconjunctival disorder comprising administering glucosylglycerol.
    Type: Application
    Filed: September 1, 2016
    Publication date: December 22, 2016
    Inventors: Kyo Aizawa, Yoshihisa Iida, Takashi Shimoida, Yasuhiro Kotani, Koushi Iwata, Kazuhisa Doi
  • Patent number: 8926548
    Abstract: The present invention provides: a superficial cerebral vascular bleeding inhibitor comprising an aqueous solution containing 120 to 160 mEq/L of sodium ion, 1 to 5 mEq/L of calcium ion, and 75 to 165 mEq/L of chloride ion; the superficial cerebral vascular bleeding inhibitor further comprising 1 to 5 mEq/L of potassium ion; and a packaged container containing the superficial cerebral vascular bleeding inhibitor (with or without potassium ion). The superficial cerebral vascular bleeding inhibitor of the present invention can effectively prevent or inhibit bleeding from superficial cerebral blood vessels in the field of neurosurgery such as intracranial surgery and the like, thereby capable of securing a clear operating field during intracranial surgery and inhibiting the occurrence of post-surgery damage.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: January 6, 2015
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Yasutaka Fujita, Kazuhisa Doi, Shuji Kamikawa
  • Publication number: 20140315836
    Abstract: An object of the present invention is to provide a protective agent for the keratoconjunctiva or a suppressive agent for a keratoconjunctival disorder having an excellent suppressive effect on a keratoconjunctival disorder. The invention relates to a protective agent for the keratoconjunctiva or a suppressive agent for a keratoconjunctival disorder containing glucosylglycerol as an active ingredient, use of glucosylglycerol for the manufacture of a pharmaceutical for protecting a keratoconjunctiva or suppressing a keratoconjunctival disorder and a method of protecting a keratoconjunctiva or suppressing a keratoconjunctival disorder comprising administering glucosylglycerol.
    Type: Application
    Filed: November 22, 2012
    Publication date: October 23, 2014
    Inventors: Kyo Aizawa, Yoshihisa Iida, Takashi Shimoida, Yasuhiro Kotani, Koushi Iwaia, Kazuhisa Doi
  • Patent number: 8409624
    Abstract: The present invention provides an artificial cerebrospinal fluid containing 120 to 160 mEq/L of sodium ion, 1 to 6 mEq/L of potassium ion, 75 to 155 mEq/L of chloride ion, and 5 to 45 mEq/L of bicarbonate ion, and provides an artificial cerebrospinal fluid further containing at least one component selected from the group consisting of 10 g/L or less of a reducing sugar, 5 mmol/L or less of phosphoric acid, 5 mEq/L or less of calcium ion, and 5 mEq/L or less of magnesium ion. The artificial cerebrospinal fluid of the present invention can prevent or reduce the incidence of cerebral edema and can further suppress brain cell disorders when used as an irrigation fluid or perfusion fluid in the field of neurosurgery, such as intracranial surgery, or when used as a replenishing fluid for lost cerebrospinal fluid.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: April 2, 2013
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Kazuhisa Doi, Yujiro Morioka, Takeshi Kawano
  • Publication number: 20100323975
    Abstract: A therapeutic agent for cerebral ischemic injury contains at least one selected from L-alanyl-L-histidine and glycyl-L-histidine as an active ingredient. The therapeutic agent for cerebral ischemic injury preferably has a dosage form as an injection for intravenous administration. The therapeutic agent for cerebral ischemic injury having a dosage form as an aqueous injection contains at least one selected from L-alanyl-L-histidine and glycyl-L-histidine at a concentration of preferably 0.3 to 3.5 mol/L, and more preferably 0.6 to 2.1 mol/L.
    Type: Application
    Filed: December 25, 2008
    Publication date: December 23, 2010
    Applicant: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Yuichi Kawano, Kazuhisa Doi, Takuya Nii
  • Publication number: 20100178363
    Abstract: The present invention provides: a superficial cerebral vascular bleeding inhibitor comprising an aqueous solution containing 120 to 160 mEq/L of sodium ion, 1 to 5 mEq/L of calcium ion, and 75 to 165 mEq/L of chloride ion; the superficial cerebral vascular bleeding inhibitor further comprising 1 to 5 mEq/L of potassium ion; and a packaged container containing the superficial cerebral vascular bleeding inhibitor (with or without potassium ion). The superficial cerebral vascular bleeding inhibitor of the present invention can effectively prevent or inhibit bleeding from superficial cerebral blood vessels in the field of neurosurgery such as intracranial surgery and the like, thereby capable of securing a clear operating field during intracranial surgery and inhibiting the occurrence of post-surgery damage.
    Type: Application
    Filed: February 5, 2008
    Publication date: July 15, 2010
    Applicant: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Yasutaka Fujita, Kazuhisa Doi, Shuji Kamikawa
  • Publication number: 20090092681
    Abstract: The present invention provides an artificial cerebrospinal fluid containing 120 to 160 mEq/L of sodium ion, 1 to 6 mEq/L of potassium ion, 75 to 155 mEq/L of chloride ion, and 5 to 45 mEq/L of bicarbonate ion, and provides an artificial cerebrospinal fluid further containing at least one component selected from the group consisting of 10 g/L or less of a reducing sugar, 5 mmol/L or less of phosphoric acid, 5 mEq/L or less of calcium ion, and 5 mEq/L or less of magnesium ion. The artificial cerebrospinal fluid of the present invention can prevent or reduce the incidence of cerebral edema and can further suppress brain cell disorders when used as an irrigation fluid or perfusion fluid in the field of neurosurgery, such as intracranial surgery, or when used as a replenishing fluid for lost cerebrospinal fluid.
    Type: Application
    Filed: April 4, 2006
    Publication date: April 9, 2009
    Applicant: OTSUKA PHARMCEUTICAL FACTORY ,INC.
    Inventors: Kazuhisa Doi, Yujiro Morioka, Takeshi Kawano