Patents by Inventor Glen P. Fetterman, Jr.

Glen P. Fetterman, Jr. 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).

  • Low ash lubricant compositions for internal combustion engines
    Patent number: 5320765
    Abstract: In accordance with the present invention, there are provided low sulfated ash lubricating oil compositions which comprise an oil of lubricating viscosity as the major component and as the minor component (A) at least about 2 wt % of at least one ashless nitrogen- or ester-containing dispersant, (B) an antioxidant effective amount of at least one oil soluble antioxidant material, and (C) at least one oil soluble dihydrocarbyl dithiophosphate antiwear material wherein the hydrocarbyl groups contain an average of at least 3 carbon atoms, and wherein the lubricating oil is characterized by a total sulfated ash (SASH) level of from 0.01 to about 0.6 wt % and by a SASH wt:dispersant wt ratio of from about 0.01 to about 0.2:1.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: June 14, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Glen P. Fetterman, Jr., Alan A. Schetelich
  • Lubricant compositions for internal combustion engines
    Patent number: 5141657
    Abstract: In accordance with the present invention, there are provided low sulfated ash lubricating oil compositions which copmrise an oil of lubricating viscosity as the major component and as the minor component (A) at least about 3 wt % of at least one ashless nitrogen- or ester-containing dispersant, (B) at least about 2 wt % of at least one sulfurized alkyl phenol, and (C) at least one metal dihydrocarbyl dithiophosphate wherein the hydrocarbyl groups contain an average of at least 6 carbon atoms, and wherein the lubricating oil is characterized by a total sulfated ash (SASH) level of from 0.01 to about 0.6 wt % and by a SASH:dispersant wt:wt ratio of from about 0.01 to about 0.2:1.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: August 25, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Glen P. Fetterman, Jr., Alan A. Schetelich
  • Low ash lubricant compositions for internal combustion engines (PT-727)
    Patent number: 5102566
    Abstract: In accordance with the present invention, there are provided low sulfacted ash lubricating oil compositions which comprise an oil of lubricating viscosity as the major component and as the minor component (A) at least about 2 wt % of at least one ashless nitrogen- or ester-containing dispersant, (B) an antioxidant effective amount of at least one oil soluble antioxidant material, and (C) at least one oil soluble dihydrocarbyl dithiophosphate antiwear material wherein the hydrocarbyl groups contain an average of at least 3 carbon atoms, and wherein the lubricating oil is characterized by a total sulfated ash (SASH) level of from 0.01 to about 0.6 wt % and by a SASH wt:dispersant wt ratio of from about 0.01 to about 0.2:1.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: April 7, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Glen P. Fetterman, Jr., Alan A. Schetelich