Patents by Inventor Tomohiro Shirosaki

Tomohiro Shirosaki 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).

  • Multibranched polyoxyalkylene derivative
    Patent number: 8071712
    Abstract: An object of the present invention is to provide a novel multibranched polyoxyalkylene derivative, and an intermediate for the production thereof. Specifically, the object is to provide a multibranched polyoxyalkylene derivative which can keep a high activity of a bio-related substance modified with the multibranched polyoxyalkylene derivative and which can easily produce the modified substance; an intermediate thereof; and a bio-related substance to which the multibranched polyoxyalkylene derivative is bonded. The novel multibranched polyoxyalkylene derivative according to the invention is a polyoxyalkylene derivative (1) having a functional group reactive with a bio-related substance and the bio-related substance according to the invention has a structure modified with the above polyoxyalkylene derivative (1) by a reaction. Furthermore, the intermediate for the production of the novel multibranched polyoxyalkylene derivative according to the invention is a polyoxyalkylene derivative (A).
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: December 6, 2011
    Assignee: NOF Corporation
    Inventors: Kenji Sakanoue, Hiroki Yoshioka, Tomohiro Shirosaki
  • MULTIBRANCHED POLYOXYALKYLENE DERIVATIVE
    Publication number: 20100029899
    Abstract: An object of the present invention is to provide a novel multibranched polyoxyalkylene derivative, and an intermediate for the production thereof. Specifically, the object is to provide a multibranched polyoxyalkylene derivative which can keep a high activity of a bio-related substance modified with the multibranched polyoxyalkylene derivative and which can easily produce the modified substance; an intermediate thereof; and a bio-related substance to which the multibranched polyoxyalkylene derivative is bonded. The novel multibranched polyoxyalkylene derivative according to the invention is a polyoxyalkylene derivative (1) having a functional group reactive with a bio-related substance and the bio-related substance according to the invention has a structure modified with the above polyoxyalkylene derivative (1) by a reaction. Furthermore, the intermediate for the production of the novel multibranched polyoxyalkylene derivative according to the invention is a polyoxyalkylene derivative (A).
    Type: Application
    Filed: February 28, 2008
    Publication date: February 4, 2010
    Applicant: NOF CORPORATION
    Inventors: Kenji Sakanoue, Hiroki Yoshioka, Tomohiro Shirosaki