Patents by Inventor Antonios Gkogkidis

Antonios Gkogkidis 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).

  • Polymer blend compositions containing a styrenic copolymer, an acetal polymer and a thermoplastic polyester or polycarbonate resin ingredient
    Patent number: 5250606
    Abstract: The present invention pertains to thermoplastic polymer blends which comprise a monovinylidene aromatic copolymer, an acetal polymer and a thermoplastic polycarbonate resin or a polyester resin derived from the reaction of a dicarboxylic acid and a glycol, and which may also optionally contain an elastomeric material such as a thermoplastic polyurethane or an elastomeric copolyester. The resulting polymer blends have good processability and a beneficial combination of physical and chemical properties including thermal/dimensional stability, impact resistance, chemical resistance and environmental stress crack resistance. Said polymer blends are suitable for use in the preparation of a variety of molded utilitarian articles having good appearance and paintability.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: October 5, 1993
    Assignee: The Dow Chemical Company
    Inventors: Martin J. Guest, P. F. M. v/d Berghen, Ludo M. Aerts, Antonios Gkogkidis, Abraham F. de Bert
  • Styrenic copolymer/polyacetal/thermoplastic polyurethane or elastomeric copolyester blend compositions
    Patent number: 5244946
    Abstract: Thermoplastic polymer blends comprising a monovinylidene aromatic copolymer, an acetal polymer and an elastomeric material such as a thermoplastic polyurethane or an elastomeric copolyester have good processability and a beneficial combination of physical and chemical properties including thermal/dimensional stability, impact resistance, chemical resistance and creep resistance. Said polymer blends are suitable for use in the preparation of a variety of molded utilitarian articles having good appearance and paintability.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: September 14, 1993
    Assignee: The Dow Chemical Company
    Inventors: Martin J. Guest, P. F. M. v/d Berghen, Ludo M. Aerts, Antonios Gkogkidis, Abraham F. de Bert
  • Styrenic copolymer/polyacetal blend compositions
    Patent number: 5196461
    Abstract: Thermoplastic polymer blends comprising a major proportion by weight of certain monovinylidene aromatic copolymers and a minor proportion by weight of an acetal polymer have good processability and a beneficial combination of physical and chemical properties including thermal/dimensional stability, chemical resistance and creep resistance. Said polymer blends are suitable for use in the preparation of a variety of molded utilitarian articles having good appearance and paintability.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: March 23, 1993
    Assignee: The Dow Chemical Company
    Inventors: Martin J. Guest, P. F. M. v/d Berghen, Ludo M. Aerts, Antonios Gkogkidis, Abraham F. de Bert