Patents by Inventor Christopher Jeffrey Still Kent

Christopher Jeffrey Still Kent 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).

  • Electrical insulating oil with reduced gassing tendency
    Patent number: 6669872
    Abstract: An electrical oil having reduced gassing tendency includes a major amount of a paraffinic or naphthenic basestock and a blend of certain hindered phenols, especially a blend of 2,6-di-t-butyl phenol and 2,6-di-t-butyl cresol. A further enhanced gassing tendency can be provided to the electrical oil by including a tolyltriazole derivative.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: December 30, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Christopher Jeffrey Still Kent, Jacob B. Angelo
  • Electrical insulating oil with reduced gassing tendency
    Publication number: 20020109127
    Abstract: An electrical oil having reduced gassing tendency includes a major amount of a paraffinic or naphthenic basestock and a blend of certain hindered phenols, especially a blend of 2,6-di-t-butyl phenol and 2,6-di-t-butyl cresol. A further enhanced gassing tendency can be provided to the electrical oil by including a tolyltriazole derivative.
    Type: Application
    Filed: July 13, 2001
    Publication date: August 15, 2002
    Inventors: Christopher Jeffrey Still Kent, Jacob B. Angelo
  • Electrical insulating oil with reduced gassing tendency
    Patent number: 6315920
    Abstract: An electrical oil having reduced gassing tendency includes a major amount of a paraffinic or naphthenic basestock and a blend of certain hindered phenols, especially a blend of 2,6-di-t-butyl phenol and 2,6-di-t-butyl cresol. A further enhanced gassing tendency can be provided to the electrical oil by including a tolyltriazole derivative.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: November 13, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Christopher Jeffrey Still Kent, Jacob B. Angelo
  • High stress electrical oil
    Patent number: 6214776
    Abstract: An oil composition useful as a high stress electrical oil and especially as a transformer load tap changer oil is provided. The composition comprises a major amount of a paraffinic oil having a low viscosity of less than about 20 cSt @ 40° C. and an effective amount of an additive system including at least one hindered phenolic antioxidant and a benzotriazole metal deactivator.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: April 10, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob B. Angelo, Christopher Jeffrey Still Kent, Frederick Michael Gragg
  • Non-sludging, high temperature resistant food compatible lubricant for food processing machinery
    Patent number: 6090761
    Abstract: A lubricating oil suitable for machinery which may come into incidental contact with food is described, which contains a food grade base oil and a combination of food grade additives including a thickener, an antioxidant, a rust inhibitor, an anti-wear additive, an antifoamant, optionally a metal passivator, and a combination of up to 2.5 wt % emulsifier and coupling agent. The lubricating oil exhibits good resistance to wear, oxidation and rust, and reduced sludging at equipment surface temperatures of about 200.degree. F. and higher.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: July 18, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Kevin David Butler, Robert D. Dewalt, Christopher Jeffrey Still Kent
  • Non-sludging, high temperature resistant food compatible lubricant for food processing machinery
    Patent number: 6087308
    Abstract: A lubricating oil suitable for machinery which may come into incidental contact with food is described, which contains a food grade base oil and a combination of food grade additives including a thickener, an antioxidant, a rust inhibitor, an anti-wear additive, an antifoamant, optionally a metal passivator, and 0.2 wt % or less coupling agent. The lubricating oil exhibits good resistance to wear, oxidation and rust, and reduced sludging at equipment surface temperatures of about 200.degree. F. and higher.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: July 11, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Kevin David Butler, Christopher Jeffrey Still Kent
  • High temperature, high efficiency electrical and transformer oil
    Patent number: 6083889
    Abstract: An oil composition useful as an electrical or transformer oil is provided. The composition comprises a major amount of a paraffinic oil having a Cleveland open cup flash point of more than about 200.degree. C. and an effective amount of an additive system including at least one hindered phenolic antioxidant and a tolyltriazole metal deactivator.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: July 4, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob Ben Angelo, Christopher Jeffrey Still Kent