Patents by Inventor Hiyora Kobayashi

Hiyora Kobayashi 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).

  • Clathrate hydrate inhibitor and method of inhibiting the formation of clathrate hydrates using it
    Patent number: 6232273
    Abstract: Disclosed herein are clathrate hydrate inhibitors and the method of inhibiting the formation, agglomeration, and deposition of clathrate hydrate using the inhibitors. The clathrate hydrate inhibitor comprises a macromolecular compound in which 3-15 membered ring pendant is connected to the polymer main chain via a specific spacer group such as homo- or co-polymer of (meth)acryloyl pyrrolidine, pyrrolidinocarbonylethyl (meth)acrylate, 2-oxo-pyrrolidino-ethyl (meth)acrylate, glyoxyloyl pyrrolidine, pyrrolidinocarbonyl aspartate.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: May 15, 2001
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Takashi Namba, Yoshikazu Fujii, Takuya Saeki, Hiyora Kobayashi