Patents by Inventor Frederick W. Jacob

Frederick W. Jacob 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).

  • Reactor system for rapid kill gas injection to gas phase polymerization reactors
    Patent number: 4834947
    Abstract: There is provided an improvement in a method for terminating a gas phase olefin polymerization reaction with a kill gas such as carbon monoxide or carbon dioxide. The improvement involves the use of a carrier gas to increase the rate of penetration of kill gas into the reaction medium. The improved method is particularly adaptable to a fluid bed reactor system.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: May 30, 1989
    Assignee: Mobil Oil Corporation
    Inventors: John E. Cook, Robert O. Hagerty, Frederick W. Jacob
  • Method and reactor system for rapid kill gas injection to gas phase polymerization reactors
    Patent number: 4786695
    Abstract: There is provided an improvement in a method for terminating a gas phase olefin polymerization reaction with a kill gas such as carbon monoxide or carbon dioxide. The improvement involves the use of a carrier gas to increase the rate of penetration of kill gas into the reaction medium. The improved method is particularly adaptable to a fluid bed reactor system.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: November 22, 1988
    Assignee: Mobil Oil Corporation
    Inventors: John E. Cook, Robert O. Hagerty, Frederick W. Jacob
  • Method and reactor system for rapid kill gas injection to gas phase polymerization reactors
    Patent number: 4666999
    Abstract: There is provided an improvement in a method for terminating a gas phase olefin polymerization reaction with a kill gas such as carbon monoxide or carbon dioxide. The improvement involves the use of a carrier gas to increase the rate of penetration of kill gas into the reaction medium. The improved method is particularly adaptable to a fluid bed reactor system.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: May 19, 1987
    Assignee: Mobil Oil Corporation
    Inventors: John E. Cook, Robert O. Hagerty, Frederick W. Jacob
  • Method for rapid kill gas injection to gas phase polymerization reactors during power failures
    Patent number: 4547555
    Abstract: There is provided a method for terminating a gas phase olefin polymerization reaction with a kill gas such as carbon monoxide or carbon dioxide. The method involves the use of coast-down flow of recycle gas during a failure of the power source of a compressor to carry kill gas into the reaction medium. The method is particularly adaptable to a fluid bed reactor system.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: October 15, 1985
    Assignee: Mobil Oil Corporation
    Inventors: John E. Cook, Robert O. Hagerty, Frederick W. Jacob
  • Degassing process for removing unpolymerized monomers from olefin polymers
    Patent number: 4372758
    Abstract: A degassing or purging process is disclosed for the removal of unpolymerized gaseous monomers from solid olefin polymers. The disclosed process comprises conveying the solid polymer, e.g. in granular form, to the top of a purge vessel by means of an inert gas stream, feeding an inert gas stream to the bottom of the purge vessel and countercurrently contacting the solid polymer with the inert gas purge stream to strip away the gaseous monomers evolved from the solid polymer, and recycling a portion of the resulting stream to the purge vessel. In one embodiment, the recycle serves as the conveying gas and in another embodiment as the purge stream. The process is especially useful in purging gaseous unpolymerized hydrocarbon monomers from low pressure-polymerized, low density ethylene-hydrocarbon copolymers.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: February 8, 1983
    Assignee: Union Carbide Corporation
    Inventors: Robert W. Bobst, Billy J. Garner, Frederick W. Jacob