Patents by Inventor Kazufumi Shiotani

Kazufumi Shiotani 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).

  • Fluorometholone ophthalmic suspension
    Patent number: 6288049
    Abstract: A fluorometholone ophthalmic suspension containing fluorometholone as an active ingredient, wherein a cellulosic polymer, such as hydroxypropylmethylcellulose or methylcellulose, and a nonionic surfactant, such as polysorbate 80, are added thereto to increase the redispersibility of the fluorometholone. The amount of the cellulosic polymer is preferably 0.0001 to 0.003 (W/V) %, and the amount of the nonionic surfactant is preferably 0.0001 to 0.5 (W/V) %. The fluorometholone ophthalmic suspension has excellent redispersibility and hardly forms aggregates.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: September 11, 2001
    Assignee: Santen Pharmaceutical Co., Ltd.
    Inventors: Kenji Morishima, Kazufumi Shiotani