Patents by Inventor Norman L. Carr

Norman L. Carr 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).

  • Separation of solids from coal liquids using an additive
    Patent number: 4102774
    Abstract: Ash-containing solids are separated from coal liquid by mixing alcohol with said coal liquid, followed by a solids-liquid separation step.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: July 25, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Norman L. Carr, Edgar L. McGinnis