Patents by Inventor Linda A. Benjamin

Linda A. Benjamin 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).

  • Patent number: 5399276
    Abstract: Alkoxylated- or polyalkoxylate-amine-phosphite derived olefin adducts are superior as lubricating fluid media and as multifunctional additives with internal synergistic antioxidant and extreme pressure/antiwear properties for both mineral and synthetic lubricating oils as well as fuels.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: March 21, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Linda A. Benjamin, Andrew G. Horodysky, Derek A. Law, Shi-Ming Wu
  • Patent number: 5254276
    Abstract: Cyclic diol- and diol-ester phosphite adducts of olefins and polymeric olefins provide superior multifunctional and lubricating fluid media with internal synergistic multifunctional antiwear, antioxidant properties and extreme pressure/antiwear additives for both mineral and synthetic lubricating oils as well as liquid hydrocarbon fuels.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: October 19, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Linda A. Benjamin, Andrew G. Horodysky, Derek A. Law, Shi-Ming Wu
  • Patent number: 5116523
    Abstract: Sulfur derivatives of unsaturated oligomers formed from alpha-olefins of 2 to 20 carbon atoms which oligomer has a branch ratio of less than 0.19.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: May 26, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Noyes L. Avery, Linda A. Benjamin, Derek A. Law
  • Patent number: 5104579
    Abstract: It has now been discovered that oligomers of C.sub.6 - C.sub.20 alpha-olefins, such as 1-decene, with branch ratios below 0.19 and high viscosity indices (HVI) can be functionalized to provide unique phosphite derivatives. Functionalized polyalpha-olefin lubricants compositions are prepared with superior properties by adding functionalized organophosphites to the olefinic bond of HVI-PAO. The invention encompasses a process for the preparation of lubricant range hydrocarbons containing phosphonate functional groups, comprising;reacting olefinic C.sub.20 + polyalpha-olefin oligomers having a branch ratio of less than 0.19 and phosphite ester in a mixture with peroxide catalyst at elevated temperature whereby phosphite ester adduct of said polyalpha-olefin is formed;separating said reaction mixture products and recovering said adduct.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: April 14, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Linda A. Benjamin, Derek A. Law, Andrew G. Horodysky
  • Patent number: 5071577
    Abstract: Novel phosphite derivatives of propylene based lube olefins are novel lubricating fluid media with internal synergistic multifunctional extreme pressure, antiwear and antioxidant properties. These compounds exhibit the same multifunctional characteristics when used in minor additive amounts in either mineral or synthetic lubricating oils as well as fuels.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: December 10, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Linda A. Benjamin, Andrew G. Horodysky, Derek A. Law, Nancy M. Page
  • Patent number: 5006271
    Abstract: Sulfurized propylene based lube olefin derivatives are superior lubricating fluids with internal synergistic multifunctional extreme pressure/antiwear and antioxidant properties as well as multifunctional extreme pressure/antiwear additives for both mineral and synthetic lubricating oils as well as fuels.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: April 9, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Noyes L. Avery, Linda A. Benjamin, Andrew G. Horodysky, Derek A. Law
  • Patent number: 4983310
    Abstract: Hydrocarbyl thiophosphoric acid-phosphite derived olefin and polymeric olefin adducts are superior as lubricating fluid media with internal synergistic multifunctional antiwear, antioxidant properties, and as multifunctional extreme pressure/antiwear additives for both mineral and synthetic lubricating oils as well as fuels.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: January 8, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Linda A. Benjamin, Andrew G. Horodysky, Derek A. Law, Shi-Ming Wu
  • Patent number: 4939300
    Abstract: Aminic orthoester derivatives of the formulae ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: July 3, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Linda A. Benjamin, Joseph E. Barbiarz, Stephen D. Pastor
  • Patent number: 4898980
    Abstract: An improved process for preparing dithiobisphenols wherein the appropriate phenol is reacted with sulfur monochloride in the presence of substantially molar amounts of an aliphatic or heterocyclic amine.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: February 6, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Linda A. Benjamin, Stephen D. Pastor, John J. Luzzi