Patents by Inventor Masamitsu Miyagawa

Masamitsu Miyagawa 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).

  • One-package thixotropic polyurethane resin composition
    Patent number: 6255433
    Abstract: A one-package thixotropic polyurethane resin composition comprising 10 to 90% by weight of a urethane prepolymer having a terminal free isocyanate group(a) which is obtained by reacting a polyisocyanate(b) with a compound having two or more active hydrogens(c), a monool(d) and an (N-hydroxyalkyl-oxazolidine compound(e), 0.1 to 20% by weight of hydrophobic fine powder silica(f) and 0.01 to 3.0% by weight of an oxazolidine-ring opening accelerator(g) is suitable for the use as a low modulus type sealant excellent in storage stability and curability and having low modulus and controlled foaming.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: July 3, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Kenji Kuroda, Masamitsu Miyagawa, Masahiro Miwa