Patents by Inventor Bradley D. Stevens

Bradley D. Stevens 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).

  • Methods of making antistatic vinylaromatic-containing articles
    Patent number: 5132060
    Abstract: A method of making antistatic vinylaromatic polymer-containing articles, and articles produced thereby, which includes immersing expandable vinylaromatic polymer-containing articles, having a blowing agent dispersed therein, in a bath containing an ethoxylated amine compound for a length of time sufficient to allow the ethoxylated amine compound to penetrate into the expandable articles to an extent such that the expandable articles, when expanded to a density of at most about 1.5 pcf, dissipate an induced 5000 volt charge to substantially 0 volts in less than 2 seconds.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: July 21, 1992
    Assignee: The Dow Chemical Company
    Inventor: Bradley D. Stevens
  • Plastic clad metal laminate for heat transfer partitions
    Patent number: 5082740
    Abstract: A water wettable corrosion resistant plastic clad metal laminate suitable for forming into heat transfer partitions for use in apparatus for simultaneous heat and mass transfer.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: January 21, 1992
    Assignee: The Dow Chemical Company
    Inventors: Wilhelm E. Walles, Felix Achille, Terry H. Fiero, Steve D. Gregory, Timothy O. Kirch, Bradley D. Stevens
  • Styrene polymer foam made with alpha-polyolefin additives
    Patent number: 4515907
    Abstract: An improved foamable vinyl aromatic polymer composition and a process for preparing a vinyl aromatic polymer foam having incorporated therein a blend of alpha-olefin polymers are disclosed. The blend of alpha-olefin polymers may be virgin material or a portion of recycle feedstream, the recycle feedstream being prepared from adhesive film faced extruded vinyl aromatic foam laminate scrap. Foam materials having improved solvent resistance, ultraviolet light stability, and adhesive characteristics are prepared from the composition and process.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: May 7, 1985
    Assignee: The Dow Chemical Company
    Inventors: Thomas W. McCullough, Bradley D. Stevens
  • Styrena polymer foam made with .alpha.-polyolefin additives
    Patent number: 4452751
    Abstract: An improved foamable vinyl aromatic polymer composition and a process for preparing a vinyl aromatic polymer foam having incorporated therein a blend of alpha-olefin polymers are disclosed. The blend of alpha-olefin polymers may be virgin material or a portion of recycle feedstream, the recycle feedstream being prepared from adhesive film faced extruded vinyl aromatic foam laminate scrap. Foam materials having improved solvent resistance, ultraviolet light stability, and adhesive characteristics are prepared from the composition and process.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: June 5, 1984
    Assignee: The Dow Chemical Company
    Inventors: Thomas W. McCullough, Bradley D. Stevens