Patents by Inventor Shuichi Nishihata

Shuichi Nishihata 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).

  • Aqueous liquid bromfenac composition having preservative efficacy
    Patent number: 9561280
    Abstract: An aqueous liquid bromfenac composition containing (a) bromfenac or a salt thereof and (b) benzalkonium chloride, characterized by that the composition has preservative efficacy and that the concentration of (b) benzalkonium chloride is higher than 0.0005% and lower than 0.005%.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: February 7, 2017
    Assignee: SENJU PHARMACEUTICAL CO., LTD.
    Inventors: Shuichi Nishihata, Wakiko Asayama, Suzuka Iemoto
  • DIFLUPREDNATE EMULSION COMPOSITION CONTAINING ANTIMICROBIAL METAL
    Publication number: 20150366879
    Abstract: The present invention provides a difluprednate emulsion composition showing immediate effectiveness of preservative efficacy. The immediate effectiveness of preservative efficacy is achieved by adding an antimicrobial metal (excluding zinc). The present invention also provides a method of conferring immediate effectiveness of the preservative efficacy to an emulsion composition comprising difluprednate, the method includes preparing an emulsion composition comprising difluprednate and an antimicrobial metal (excluding zinc).
    Type: Application
    Filed: February 14, 2014
    Publication date: December 24, 2015
    Inventors: Masazumi YAMAGUCHI, Shuichi NISHIHATA, Suzuka IEMOTO, Shinichi YASUEDA
  • AQUEOUS LIQUID BROMFENAC COMPOSITION HAVING PRESERVATIVE EFFICACY
    Publication number: 20150306222
    Abstract: An aqueous liquid bromfenac composition containing (a) bromfenac or a salt thereof and (b) benzalkonium chloride, characterized by that the composition has preservative efficacy and that the concentration of (b) benzalkonium chloride is higher than 0.0005% and lower than 0.005%.
    Type: Application
    Filed: July 8, 2015
    Publication date: October 29, 2015
    Inventors: Shuichi NISHIHATA, Wakiko ASAYAMA, Suzuka IEMOTO
  • Aqueous liquid bromfenac composition having preservative efficacy
    Patent number: 9107888
    Abstract: An aqueous liquid bromfenac composition containing (a) bromfenac or a salt thereof and (b) benzalkonium chloride, characterized by that the composition has preservative efficacy and that the concentration of (b) benzalkonium chloride is higher than 0.0005% and lower than 0.005%.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: August 18, 2015
    Assignee: SENJU PHARMACEUTICAL CO., LTD.
    Inventors: Shuichi Nishihata, Wakiko Asayama, Suzuka Iemoto
  • AQUEOUS LIQUID BROMFENAC COMPOSITION HAVING PRESERVATIVE EFFICACY
    Publication number: 20130281537
    Abstract: An aqueous liquid bromfenac composition containing (a) bromfenac or a salt thereof and (b) benzalkonium chloride, characterized by that the composition has preservative efficacy and that the concentration of (b) benzalkonium chloride is higher than 0.0005% and lower than 0.005%.
    Type: Application
    Filed: January 18, 2012
    Publication date: October 24, 2013
    Inventors: Shuichi Nishihata, Wakiko Asayama, Suzuka Iemoto
  • Bactericidal composition
    Patent number: 6020375
    Abstract: A bactericidal composition comprising a hypertonic solution and a surfactant, and having an osmotic pressure of not less than 300 mOsm. The bactericidal composition of the present invention shows an unexpectedly high bactericidal activity. Such a highly bactericidal composition can be used as an external agent, a disinfectant, an agent for contact lenses and the like.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: February 1, 2000
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Shuichi Nishihata, Masayo Yamaguchi