Patents by Inventor Christophe J. Lawrie

Christophe J. Lawrie 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).

  • Drilling fluids comprising mostly linear olefins
    Patent number: 6057272
    Abstract: The present invention relates to synthetic hydrocarbon as the continuous phase of a drilling fluid. These hydrocarbons comprise mostly linear olefins, preferably C.sub.14 to C.sub.18 olefins.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: May 2, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: Jeffrey C. Gee, Roger C. Williamson, Christophe J. Lawrie
  • Skeletally isomerized linear olefins
    Patent number: 6054415
    Abstract: The present invention relates to synthetic hydrocarbons produced by skeletal isomerization, and the isomerization process. The products are especially useful as the continuous phase of a drilling fluid, for example when prepared from C.sub.14 to C.sub.18 linear alpha-olefins via isomerization or hydroisomerization, and as lube oils.The present invention also relates to a process for producing synthetic hydrocarbons by skeletally isomerizing C.sub.12+ olefins over a catalyst comprising an intermediate pore size molecular sieve, with or without Group VIII metals under skeletal isomerization conditions which result in little, preferably in substantially no, olefin cracking or oligomerization.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: April 25, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: Jeffrey C. Gee, Roger C. Williamson, Christophe J. Lawrie, Stephen J. Miller
  • Process for isomerizing olefins
    Patent number: 5965783
    Abstract: A process for producing a synthetic hydrocarbon product is provided comprising contacting under isomerization conditions an olefin feed comprising linear olefins with a catalyst comprising an intermediate pore size molecular sieve, wherein the catalyst is substantially free of Group VIII metals. The synthetic hydrocarbon product exhibits a low pour point and low toxicity to marine life.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: October 12, 1999
    Assignee: Chevron Chemical Company
    Inventors: Jeffrey C. Gee, Roger C. Williamson, Christophe J. Lawrie, Stephen J. Miller
  • Drilling fluids comprising mostly linear olefins
    Patent number: 5589442
    Abstract: The present invention relates to synthetic hydrocarbon as the continuous phase of a drilling fluid. These hydrocarbons comprise mostly linear olefins, preferably C.sub.14 to C.sub.18 olefins.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 31, 1996
    Assignee: Chevron Chemical Company
    Inventors: Jeffrey C. Gee, Christophe J. Lawrie, Roger C. Williamson