Patents by Inventor Toshiyuki Niwa

Toshiyuki Niwa 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).

  • Press-Forming Device, Press-Forming Method, Computer Program/Software Arrangement and Storage Medium
    Publication number: 20070240470
    Abstract: Exemplary embodiments of a press-forming device are provided. The exemplary press-forming device can include a material characteristic input configured to input the material characteristics out of sheet thickness, yield strength, 0.2% proof stress, tensile strength, elongation, n value, r value, stress-strain relation equation, hardness, temperature, surface roughness, friction coefficient and/or lubricant film thickness of the material. A state variable detector can also be provided for measuring at least one state variable out of punch reaction, metal mold temperature, metal mold distortion amount, work piece deformation amount, and work piece temperature during forming.
    Type: Application
    Filed: November 10, 2004
    Publication date: October 18, 2007
    Inventors: Noriyuki Suzuki, Akihiro Uenishi, Yukihisa Kuriyama, Toshiyuki Niwa, Takuya Kuwayama, Mitsuharu Yamagata
  • Rapidly releasing and taste-masking pharmaceutical dosage form
    Patent number: 6221402
    Abstract: A rapidly-releasing and taste-masking pharmaceutical dosage form and a process for preparing such oral dosage form are disclosed.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: April 24, 2001
    Assignee: Pfizer Inc.
    Inventors: Akinori Itoh, Toshiyuki Niwa
  • Hollow granular medicine and its preparation
    Patent number: 5087455
    Abstract: A granular medicine with slow drug-release characteristics that is sufficiently absorbed in the intestines, in which the granular medicine has a hollow spherical structure, a drug is dispersed in the shell, which mainly consists of an enteron-soluble polymer. The method for preparing the medicine includes the steps of: (a) mixing a hydrophilic or hydrophobic drug with an enteron-soluble polymer in a mixture of an aliphatic alcohol and a chlorohydrocarbon; and (b) pouring this mixture into water or an aqueous medium, and stirring the solution to precipitate the medicine.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: February 11, 1992
    Assignees: Showa Yakuhin Kako Co. Ltd., Yoshiaki Kawashima
    Inventors: Toshiyuki Niwa, Yoshiaki Kawashima, Hirofumi Takeuchi, Yoji Ito
  • Hollow granular medicine and its preparation
    Patent number: 5057323
    Abstract: A granular medicine with slow drug-release characteristics that is sufficiently absorbed in the intestines, in which the granular medicine has a hollow spherical structure, a drug is dispersed in the shell, which mainly consists of an enteron-soluble polymer. The method for preparing the medicine includes the steps of: (a) mixing a hydrophilic or hydrophobic drug with an enteron-soluble polymer in a mixture of an aliphatic alcohol and a chlorohydrocarbon; and (b) pouring this mixture into water or an aqueous medium, and stirring the solution to precipitate the medicine.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: October 15, 1991
    Assignees: Showa Yakuhin Kako Co., Ltd., Yoshiaki Kawashima
    Inventors: Toshiyuki Niwa, Yoshiaki Kawashima, Hirofumi Takeuchi, Yoji Ito
  • Preparation of coated granular ibuprofen microsphere
    Patent number: 4726966
    Abstract: This invention provides a simple method for preparing granular ibuprofen microsphere whose surface is coated with acrylic acid resin. By this method granulation of ibuprofen and coating of its surface can be simultaneously accomplished. Namely, the method of preparation includes the steps of: (a) dissolving ibuprofen with acrylic acid resin into lower aliphatic alcohol, acetone, methylene chloride or N,N-dimethylformamide; and (b) depositing coated granular ibuprofen microsphere by mixing the solution of step (a) with water and by stirring the mixed solution.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: February 23, 1988
    Assignee: Showa Shinyaku Co., Ltd.
    Inventors: Yoshiaki Kawashima, Hirofumi Takeuchi, Toshiyuki Niwa, Tetsurou Handa