Patents by Inventor Dennis E. Walsh

Dennis E. Walsh 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 the visbreaking of high-metals crudes and resids
    Patent number: 4233138
    Abstract: A process for suppressing the coking tendency of heavy crudes and resids in visbreaking operations comprising treating the charge stock with an inorganic sulfide.
    Type: Grant
    Filed: January 22, 1979
    Date of Patent: November 11, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Louis D. Rollmann, Dennis E. Walsh
  • Visbreaking process for demetalation and desulfurization of heavy oil
    Patent number: 4203830
    Abstract: A thermal demetalation and desulfurization process comprising the addition of ammonia and water to heavy crude oils and residuums with minimal coke formation and with decreased viscosity.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: May 20, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Louis D. Rollmann, Dennis E. Walsh