Patents by Inventor Hyoe Hatakeyama

Hyoe Hatakeyama 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).

  • Lignin-based polyurethane and process for producing the same
    Publication number: 20050014919
    Abstract: Provided is a polyurethane which is inexpensive and excellent in physical properties and which contains a lignin sulfonic acid component incorporated into the molecular chain of the polyurethane. The polyurethane is obtainable by polycondensation of a polyol solution containing dissolved therein lignin sulfonic acid or a partially neutralized salt thereof with a polyisocyanate, wherein the content of said lignin sulfonic acid is 1-40% based on a total weight of said polyurethane.
    Type: Application
    Filed: June 14, 2002
    Publication date: January 20, 2005
    Inventors: Hyoe Hatakeyama, Shigeo Hirose
  • Liquid crystal cell
    Patent number: 5045227
    Abstract: A liquid crystal cell is disclosed which comprises a pair of opposed substrates defining a space therebetween and each having one or more electrodes disposed thereon, and a liquid crystal material provided in the space, the liquid crystal material being a lyotropic liquid crystal composition containing water and a polymeric electrolyte dissolved in the water in an amount sufficient to form a liquid crystal phase.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: September 3, 1991
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Hyoe Hatakeyama, Shigeo Hirose, Hirohisa Yoshida, Kunio Nakamura
  • Process for the degradation of hydroxystyrene polymers
    Patent number: 4154653
    Abstract: Process for the degradation of hydroxystyrene polymers which comprises culturing bacteria of Moraxella genus or fungi of Penicillium genus on a medium containing a hydroxystyrene polymer having a recurring structural unit of the general formula: ##STR1## wherein X and Y each represent a hydrogen atom or an alkoxy group, as carbon source.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: May 15, 1979
    Assignee: Agency of Industrial Science and Technology
    Inventors: Hyoe Hatakeyama, Takafusa Haraguchi, Eiichi Hayashi