Patents by Inventor Todd S. Parkhurst

Todd S. Parkhurst 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).

  • Publication number: 20130319845
    Abstract: A contaminated solvent recycling system comprises a distillation vessel having a distillation zone and a separate waste collection zone and heating means for heating contaminated solvent feed within the distillation zone vessel to distill off the solvent. By separating the distillation zone from the waste collection zone, the distillation zone can be made small enough to process small consecutive batches of contaminated solvent feed whilst the waste collection zone can be made large enough to accommodate waste accumulating from the distillation process for extended periods of time between waste removal operations.
    Type: Application
    Filed: August 8, 2013
    Publication date: December 5, 2013
    Inventor: Todd S. Parkhurst