Patents by Inventor Yoshihisa Noro

Yoshihisa Noro 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).

  • Binder and molding process employing the same for use in molding metallic and ceramic powders
    Patent number: 6316530
    Abstract: A binder is used for molding starting powder materials such as metallic and ceramic powders. A high-viscosity agar which belongs to one type of natural poly-glycols, having a gel strength less than 3000 g/cm and a sol viscosity greater than 350000 mPa s (milliPascal seconds) is used as the binder.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: November 13, 2001
    Assignee: Shimizu Shokuhin Co., Ltd.
    Inventors: Yoshihisa Noro, Yasufumi Ishii
  • Sintered metal mould and method for producing the same
    Patent number: 5997603
    Abstract: A sintered metal mould formed by plastically forming a material consisting of a metal powder or ceramic powder being mixed with a binder consisting of agar powder, and sintering the material.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: December 7, 1999
    Assignees: Shimizu Shokuhin Kaisha, Ltd., Apex Co., Ltd.
    Inventors: Yoshihisa Noro, Junichi Adachi
  • Injection-molding of metal or ceramic powders
    Patent number: 5258155
    Abstract: Provided is an injection-molding method for forming into given finished parts by injection-molding raw materials of a metal or ceramic powder feed, in which steps of coating a release agent to the mold, degreasing and freeze solidification are dispensed with. In this method, a metal or ceramic powder feed is kneaded with an agar sol comprising water, which may have or have not been treated magnetically, agar powders having a gel strength of 2000 g/cm.sup.2 at an least 2% concentration and sodium borate to form a clay form of sol-state plastic material, and this material is then put in a heat-retaining hopper of injection-molding equipment in which it is injection-molded. Alternatively, this clay form of plastic material is cooled for gelation and pelletization (to obtain finely granulated gels). The pellets are put in a hopper of injection-molding equipment in which it is formed while heated and melted.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: November 2, 1993
    Assignee: Shimizu Shokuhin Kaisha, Ltd.
    Inventors: Masakatsu Sekido, Hironori Nakayama, Michio Nukaya, Yoshihisa Noro
  • Combined reversible aqueous colloidal dental impression material
    Patent number: 4060421
    Abstract: A combined reversible aqueous colloidal dental impression material comprising powdery agar-agar, water soluble starch, silicone oil, potassium sulfate, borax, perfume, pigment antiseptic and water.A process for preparing a combined reversible colloidal dental impression material by which powdery agar-agar, water soluble starch, silicone oil potassium sulfate, borax, perfume antiseptic and pigment are admixed under heating and agitation in the presence of water and the obtained mixture is homogenized.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: November 29, 1977
    Inventors: Ikuji Yoshikawa, Yoshihisa Noro, Junji Okaneya