Patents by Inventor Edward Lawrence Cole

Edward Lawrence Cole 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).

  • Liquid phase coking of spent kraft pulping liquors
    Patent number: 4067767
    Abstract: An improved process for treating spent Kraft wood pulping liquors by coking the liquors after reducing the pH thereof with SO.sub.2 and recovering the sulfur contained in the resulting coke by contact with hydrogen preheated to temperatures in the range of 750.degree. to 2000.degree. F to produce H.sub.2 S. The H.sub.2 S and lime are added to the coker effluent to form new kraft cooking liquor.
    Type: Grant
    Filed: January 8, 1974
    Date of Patent: January 10, 1978
    Assignee: Texaco Inc.
    Inventors: Howard Vincent Hess, William Francis Franz, Edward Lawrence Cole