Patents by Inventor Ralf R. Teltschik

Ralf R. Teltschik 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).

  • Heat curable organic resin foundry sand binder composition
    Patent number: 5275648
    Abstract: A heat curable organic sand binder based upon epoxide or epoxide novolac resin and a latent dicyandiamide or imidazole curing agent, with or without an imidazole accelerator, which may be used as a direct replacement for other "Hot Box" and "Warm Box" foundry resin binders and as a direct replacement for other "Shell Sand" foundry resin binders.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: January 4, 1994
    Assignees: Giesserei Verfahrens Technik Inc., Giesserei Verfahrens Technik GmbH
    Inventors: Thomas A. Cobett, Neil W. Markham, Ralf R. Teltschik