Patents by Inventor Frank P. Gortsema

Frank P. Gortsema 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).

  • Patent number: 4081574
    Abstract: An apparatus and process are provided for the safe, economic and pollution-free exposure of articles to reactive gaseous fluids to alter their surface characteristics. The articles are exposed to one or more fluids which are transferred back and forth from a reaction chamber to a holding chamber. As the fluids are transferred they pass through a trap designed to remove reaction-by-products without affecting valuable reactant fluids. Since the fluids can be transferred under vacuum and the overall reaction can take place at relatively low temperatures, the process provides a convenient and safe method for handling reactive fluids. The process is particularly useful for the halogenation, for example fluorination, of a variety of articles, such as plastic containers, aerosol bottles and films to improve their barrier resistance to solvents and gases.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: March 28, 1978
    Assignee: Union Carbide Corporation
    Inventors: Albert W. Hawkins, Matthew J. O'Hara, Frank P. Gortsema, Eddie Hedaya
  • Patent number: 3998180
    Abstract: An apparatus and process are provided for the safe, economic and pollution-free exposure of articles to reactive gaseous fluids to alter their surface characteristics. The articles are exposed to one or more fluids which are transferred back and forth from a reaction chamber to a holding chamber. As the fluids are transferred they pass through a trap designed to remove reaction-by-products without affecting valuable reactant fluids. Since the fluids can be transferred under vacuum and the overall reaction can take place at relatively low temperatures, the process provides a convenient and safe method for handling reactive fluids. The process is particularly useful for the halogenation, for example fluorination, of a variety of articles, such as plastic containers, aerosol bottles and films to improve their barrier resistance to solvents and gases.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: December 21, 1976
    Assignee: Union Carbide Corporation
    Inventors: Albert W. Hawkins, Matthew J. O'Hara, Frank P. Gortsema, Eddie Hedaya
  • Patent number: 3932594
    Abstract: Fine grain metal carbide powders are conveniently prepared from the corresponding metal oxide by heating in an atmosphere of methane in hydrogen. Sintered articles having a density approaching the theoretical density of the metal carbide itself can be fabricated from the powders by cold pressing, hot pressing or other techniques.
    Type: Grant
    Filed: December 28, 1973
    Date of Patent: January 13, 1976
    Assignee: Union Carbide Corporation
    Inventor: Frank P. Gortsema