Patents by Inventor Nobuhita Hirata

Nobuhita Hirata 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).

  • Emulsified polymer and method
    Patent number: 6117936
    Abstract: An aqueous emulsified polymer dispersion comprising emulsion particles having a multilayer construction, wherein at least one of the multiple layers of the construction forms a urethane graft copolymer layer from an unsaturated polyurethane.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: September 12, 2000
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Akiko Kato, Shigeo Nishiguchi, Reijirou Nishida, Masami Sugishima, Nobuhita Hirata