Patents by Inventor Conroy D. Anderson

Conroy D. Anderson 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).

  • Octane improvement of gasoline in catalytic cracking without decreasing total liquid yield
    Patent number: 4927526
    Abstract: Modified ZSM-5 type zeolite catalyst is prepared by controlled aging in a moving bed catalytic cracking unit. The modified catalyst exhibits significant olefin isomerization activity and reduced paraffin cracking activity. Hydrocarbons are cracked to products boiling in the motor fuel range, e.g., gasoline, by using the modified catalyst mixture comprising a ZSM-5 type zeolite and a conventional cracking catalyst. The ZSM-5 type zeolite is treated with partial pressure steam under conditions which increase the gasoline octane number of the product fuel without decreasing gasoline plus distillate yield. A process for changing a catalytic cracking unit's inventory from a conventional catalyst to a modified ZSM-5 type containing catalyst is also disclosed.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: May 22, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Conroy D. Anderson, Tai-Sheng Chou, William E. Cormier, Jr., Francis G. Dwyer, Frederick J. Krambeck, Gary M. Pasquale, Paul H. Schipper, William A. Stover
  • Method and means for separating gasiform materials from finely divided catalyst particles
    Patent number: 4043899
    Abstract: Catalyst and hydrocarbon vapors are separated in a cyclone attached to the discharge of a riser cracking operation. The cyclone is modified to include a separate cyclonic stripping of catalyst separated from hydrocarbon vapors.
    Type: Grant
    Filed: February 27, 1976
    Date of Patent: August 23, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Conroy D. Anderson, Klaus W. Schatz, Paul W. Snyder, Jr.