Patents by Inventor Bryan V. Yeh

Bryan V. Yeh 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: 20160376204
    Abstract: A method of reclaiming usable products from sludge is disclosed. A predetermined level of solvent within an extractor is heated, below atmospheric boiling point, and dried sludge is immersed within the headed solvent. The solvent is a non-polar or polar aprotic solvents, such as heptane. The non-solid products, an oil/solvent mixture are separated from the solids and transferred to at least one evaporator with a concentration of between 2-25% oil in the solvent. The oil and solvent are separated in one or more evaporators to remove approximately 70%-95%, and preferably 85%-99%, of the solvent. The solids are moved to a desolventizer for removal of the residual solvent and are then dried to a moisture content of below 25%, and preferably between 10%-15%.
    Type: Application
    Filed: July 5, 2016
    Publication date: December 29, 2016
    Inventors: Karl Wilke, Eugene F. DeShazo, Bryan V. Yeh