Patents by Inventor Carl A. Raeck

Carl A. Raeck 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).

  • Method and apparatus for the preparation of foamed thermoplastic articles
    Patent number: 4693856
    Abstract: Expandible synthetic resinous particles are molded by injecting heated air generally centrally into the mold cavity by means of a probe, withdrawing the probe and heating the surface of the mold. Low densities and rapid cycle times are obtained.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: September 15, 1987
    Assignee: The Dow Chemical Company
    Inventors: Louis C. Rubens, Willard E. Alexander, Carl A. Raeck