Patents by Inventor Mikio Osa

Mikio Osa 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).

  • Powder epoxy resin coating composition
    Patent number: 5418265
    Abstract: A powder coating composition useful for fixation of rotor and stator windings is disclosed, which includes100 parts by weight of an epoxy resin;5-35 parts by weight of an acid anhydride;2-30 parts by weight of a phenol resin;0.05-5 parts by weight of a curing accelerator; and130-270 parts by weight of an inorganic filler consisting of 99.7-87.0% by weight of a first filler component having an average particle size of 0.5-100 .mu.m and 0.3-13.0% by weight of a second filler component having an average particle size of 0.1 .mu.m or less.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: May 23, 1995
    Assignee: Somar Corporation
    Inventors: Kunimitsu Matsuzaki, Kazuya Ono, Seitaro Iwamoto, Mikio Osa, Takeshi Watanabe
  • Powder coating composition comprising conventional epoxides with crystalline epoxides and curing agents
    Patent number: 5414058
    Abstract: A powder coating composition includes one or more crystalline substances the lowest melting point of which is Mp and one or more non-crystalline substances the lowest glass transition point of which is Tg and is lower than Mp, wherein the crystalline and non-crystalline substances are selected from epoxy resins and curing agents and bonded to each other. The bonding is effected by maintaining a powdery mixture containing the crystalline and non-crystalline substances at a temperature higher than Tg but lower than Mp and the softening point of any of the the non-crystalline substances, optionally under a pressure, and cooling and pulverizing the resulting mixture.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: May 9, 1995
    Assignee: Somar Corporation
    Inventors: Kazuya Ono, Tetsuo Miyake, Mikio Osa, Katuji Kitagawa, Masao Kubo
  • Process for preparing powder coating composition
    Patent number: 5206313
    Abstract: A powder coating composition in which epoxy resin particles and curing agent particles are uniformly distributed is prepared by heating a specific powdery blend of (a) at least one crystalline epoxy resin, (b) at least one crystalline curing agent and (c) at least one non-crystalline epoxy resin and/or at least one non-crystalline curing agent at a specific temperature so that the crystalline particles are bonded with each other with the non-crystalline substance serving as a binder.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: April 27, 1993
    Assignee: Somar Corporation
    Inventors: Kazuya Ono, Mikio Osa, Masao Kubo, Katsuji Kitagawa
  • Composite material having an expanded, cured epoxy resin layer, method of producing same and powder epoxy resin composition for forming such an expanded layer
    Patent number: 5196261
    Abstract: A composite material having a substrate and an expanded, cured layer of an epoxy resin composition which is provided over a surface of the substrate and in which a major portion of the cells are present in a location adjacent to the interface between the substrate and the expanded layer and substantially no cells are present on the top surface portion of the expanded layer. The epoxy resin composition includes an acid anhydride curing agent and an alkali metal carbonate blowing agent. The composition is coated over the substrate and the coating is heated to sure and expand the composition while maintaining the top surface of the coating below the expansion temperature.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: March 23, 1993
    Assignee: Somar Corporation
    Inventors: Kazuya Ono, Katsuji Kitagawa, Seitaro Iwamoto, Mikio Osa, Takeshi Watanabe