Patents by Inventor Masuzo Hamamura

Masuzo Hamamura 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).

  • Pretreating agent for metal spraying and method for forming a metal spray coating
    Patent number: 4971838
    Abstract: A pretreating composition for metal spraying, which comprises a synthetic resin binder and from 25 to 400% by volume, based on the resin binder, of particles having a particle size of from 5 to 200 .mu.m.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: November 20, 1990
    Assignees: Dai Nippon Toryo Company, Ltd., Pan Art Craft Co., Ltd.
    Inventors: Masuzo Hamamura, Kenji Hasui, Kazuyoshi Tsuneta, Masanori Nagai
  • Method of manufacturing durable metal molds by metal melt-spraying
    Patent number: 4549597
    Abstract: A method of manufacturing durable metal molds whereby metal melt-spraying is utilized. The method comprises the steps of spraying a first model with a low melting point metal, removing the first model, casting a second low melting point metal into the space vacated by removal of the first model to form a second model, removing the second model, spraying the second model with a high melting point metal, melting said second model out of the mold formed by spraying the high melting point metal, reinforcing the space vacated by the melting of the second model with sand, and reinforcing the space to the rear of the mold with metal, cement, or any suitable material. The sand is subsequently removed to form a durable metal mold.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: October 29, 1985
    Inventor: Masuzo Hamamura