Patents by Inventor Lawrence A. Hebert

Lawrence A. Hebert 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 complete saturation of halogenated hydrocarbon streams containing unsaturated compounds
    Patent number: 5659108
    Abstract: A saturation process for essentially completely saturating unsaturated halogenated hydrocarbonaceous materials in a feedstock containing such unsaturated materials, employing a first recycle reactor for accomplishing the bulk of the saturation and a second, single pass, plug flow-type polishing reactor in combination.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: August 19, 1997
    Assignee: The Dow Chemical Company
    Inventors: Michael T. Holbrook, Lawrence A. Hebert, Katherine A. Pividal, Celio Lume Pereira
  • Reactor feed pipe design
    Patent number: 5268518
    Abstract: Process and apparatus for enhancing entrainment and self-stirring adjacent the entry of a reactor vessel of at least partly-reacted materials in an incoming stream of reactants.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: December 7, 1993
    Assignee: The Dow Chemical Company
    Inventors: David H. West, Lawrence A. Hebert, Stanford S. Kirsch
  • Catalyst for hydrohalogenation of hydrocarbons
    Patent number: 5183797
    Abstract: A process for hydrohalogenating methanol with a hydrogen halide using a catalyst having an initial zone of lower activity and subsequent zones of higher activity so that coke formation and pressure drop are decreased and catalyst life is increased while overall high catalyst activity is maintained. One example of such a process uses a low surface area amorphous alumina in an initial zone and then progressively higher surface area alumina in subsequent zones.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: February 2, 1993
    Assignee: The Dow Chemical Company
    Inventors: Michael T. Holbrook, Lawrence A. Hebert, Stephen W. Najmy, Ernest F. Stine, Jr., Reimer Hasche
  • Process and catalyst for hydrohalogenation of hydrocarbons
    Patent number: 5109138
    Abstract: A process for hydrohalogenating methanol with a hydrogen halide using a catalyst having an initial zone of lower activity and subsequent zones of higher activity so that coke formation and pressure drop are decreased and catalyst life is increased while overall high catalyst activity is maintained. One example of such a process uses a low surface area amorphous alumina in an initial zone and then progressively higher surface area alumina in subsequent zones.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: April 28, 1992
    Assignee: The Dow Chemical Company
    Inventors: Michael T. Holbrook, Lawrence A. Hebert, Stephen W. Najmy, Ernest F. Stine, Jr., Reimer Hasche
  • Liquid feed injection in a chloromethanes process
    Patent number: 5023387
    Abstract: An adiabatic vapor phase chlorination of methylene chloride, methyl chloride or a mixture thereof is improved by the injection of a portion of the methylene chloride, methyl chloride or mixture thereof into the reactor in the liquid state under conditions such that the temperature throughout the reaction zone is maintained at less than about 500.degree. C.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 11, 1991
    Assignee: The Dow Chemical Company
    Inventors: David H. West, Lawrence A. Hebert, Roger L. Bowlin, Michael T. Holbrook
  • Computing device display screen with graphical user interface for generating an asset list for an investment portfolio
    Patent number: D977493
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: February 7, 2023
    Inventor: James Lawrence Hebert