Patents by Inventor Roy E. Craddock, III

Roy E. Craddock, III 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).

  • Method and apparatus for stopping reaction in a gas phase polymerization reactor system
    Patent number: 5399320
    Abstract: A method of terminating, under emergency conditions, an olefin polymerization reaction conducted in the presence of a transitioned metal based catalyst in a gas phase reactor by using a recycle gas from the reactor or a feed stream to the reactor to operate an expander associated with a circulator which maintains fluidized conditions in the reactor while introducing a kill gas into the reactor to terminate the reaction.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: March 21, 1995
    Inventors: Roy E. Craddock, III, John M. Jenkins, III, Michael T. Tighe
  • Method and apparatus for stopping reaction in a gas phase polymerization reactor system
    Patent number: 5270408
    Abstract: A method of terminating, under emergency conditions, an olefin Polymerization reaction conducted in the presence of a transitioned metal based catalyst in a gas phase reactor by using a recycle gas from the reactor or a feed stream to the reactor to operate an expander associated with a circulator which maintains fluidized conditions in the reactor while introducing a kill gas into the reactor to terminate the reaction.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: December 14, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Roy E. Craddock, III, John M. Jenkins, III, Michael T. Tighe