Patents by Inventor Jeffrey S. Calta

Jeffrey S. Calta 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).

  • Process for extracting tar from tarsand
    Patent number: 5746909
    Abstract: Tar is separated and recovered from tarsands using an extraction process useful even in cold water which utilizes a liquid admixture of a high boiling alkane; e.g. naphtha, an anionic surfactant and water.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: May 5, 1998
    Inventor: Jeffrey S. Calta