Patents by Inventor Kouki Obata

Kouki Obata 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).

  • Quinolinone derivative pharmaceutical compositon and production method therefor
    Patent number: 7081256
    Abstract: A quinolinone derivative pharmaceutical composition comprising a quinolinone derivative represented by the structural formula (I): wherein the quinolinone derivative is in the form of particles, which have an average particle diameter of 0.5 to 10 ?m and such a particle size distribution that particles having a particle diameter of 15 ?m or less account for 90% or more of the totality of the particles, and also have a fusion enthalpy of 30 J/g or more, and the surface of the particles are coated with a water-soluble composition containing a water-soluble polymer, can quickly dissolve an active ingredient in the digestive tract and is also superior in long-term storage stability.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: July 25, 2006
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Ryuji Kubota, Hiroshi Araya, Kouki Obata, Nobuyuki Kimura, Hiroyuki Fukui, Hidetsugu Takagaki
  • Quinolinone derivative pharmaceutical compositon and production method therefor
    Publication number: 20030130310
    Abstract: A quinolinone derivative pharmaceutical composition comprising a quinolinone derivative represented by the structural formula (I): 1
    Type: Application
    Filed: June 17, 2002
    Publication date: July 10, 2003
    Applicant: Dainippon Ink and Chemicals, Inc.
    Inventors: Ryuji Kubota, Hiroshi Araya, Kouki Obata, Nobuyuki Kimura, Hiroyuki Fukui, Hidetsugu Takagaki