Patents by Inventor Craig W. Gleason

Craig W. Gleason 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).

  • Non silicone aggresive alkyl phosphates as lubrication oil additives
    Patent number: 5443744
    Abstract: This invention provides a novel antiwear and antioxidant additive for use in lubricating oils, particularly automatic transmission fluids. The novel additive is the reaction product of a phosphating agent and a thioalcohol. The reaction product is nonaggressive to silicone-based seals.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: August 22, 1995
    Assignee: Exxon Chemical Patent Inc.
    Inventors: Ricardo A. Bloch, Antonio Gutierrez, Jack Ryer, Raymond F. Watts, Craig W. Gleason
  • Mixed phosphorous- and sulfur- containing reaction products useful in power transmitting compositions
    Patent number: 5326487
    Abstract: A phosphorous- and sulfur-containing additive and its use to impart anti-wear properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmission fluids, is disclosed. The additive comprises a mixture of products formed, for example, by simultaneously reacting (1) a beta-hydroxy thioether, such as thiobisethanol, (2) a phosphorous-containing reactant, such as triethyl phosphite and (3) optionally, a nucleophilic reactant capable of reacting with the episulfonium cation ##STR1## to form thioether species.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: July 5, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jack Ryer, Antonio Gutierrez, James S. Puckace, Raymond F. Watts, Stanley J. Brois, Craig W. Gleason
  • Low pressure derived mixed phosphorous- and sulfur- containing reaction products useful in power transmitting compositions and process for preparing same
    Patent number: 5314633
    Abstract: A phosphorous- and sulfur-containing additive and its use to impart anti-wear and/or antioxidant properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmission fluids, is disclosed. The additive comprises a mixture of products formed by simultaneously reacting (1) a beta-hydroxy thioether, such as thiobisethanol, and (2) a phosphorous-containing reactant, such as tributyl phosphite. The reaction is carried out under reduced pressure conditions (e.g., -40 KPa to -100 KPa) to limit the amount of thioether species in said additive to less than about 45 mole %.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: May 24, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jack Ryer, Antonio Gutierrez, James S. Puckace, Raymond F. Watts, Craig W. Gleason, Daniel R. Mills, Edmund H. Braun, II, Stanley J. Brois
  • Mixed phosphorous- and sulfur-containing reaction products useful in power transmitting compositions
    Patent number: 5242612
    Abstract: A phosphorous- and sulfur-containing additive and its use to impart anti-wear properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmission fluids, is disclosed. The additive comprises a mixture of products formed, for example, by simultaneously reacting (1) a beta-hydroxy thioether, such as thiobisethanol, (2) a phosphorous-containing reactant, such as triethyl phosphite and (3) optionally, a nucleophilic reactant capable of reacting with the episulfonium cation ##STR1## to form thioether species.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: September 7, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jack Ryer, Antonio Gutierrez, James S. Puckace, Raymond F. Watts, Stanley J. Brois, Craig W. Gleason
  • Low pressure derived mixed phosphorous- and sulfur-containing reaction products useful in power transmitting compositions and process for preparing same
    Patent number: 5185090
    Abstract: A phosphorous- and sulfur-containing additive and its use to impart anti-wear and/or antioxidant properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmittion fluids, is disclosed. The additive comprises a mixture of products formed by simultaneously reacting (1) a betahydroxy thioether, such as thiobisethanol, and (2) a phosphorous-containing reactant, such as tributyl phosphite. The reaction is carried out under reduced pressure conditions (e.g., -40 KPa to -100 KPa) to limit the amount of thioether species in said additive to less than about 45 mole %.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: February 9, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jack Ryer, Antonio Gutierrez, James S. Puckace, Raymond F. Watts, Craig W. Gleason, Daniel R. Mills, Edmund H. Braun, II
  • Solventless process for producing dialkyl fumarate-vinyl acetate copolymers
    Patent number: 4772674
    Abstract: Process for the bulk polymerization of vinyl acetate with a diester are disclosed which are carried out in the absence of a solvent and including reacting the vinyl acetate and fumaric acid diester with a peroxide catalyst at specified molar ratios and up to reaction temperatures of from 255.degree. to 320.degree. F. to produce fumarate vinyl acetate copolymers having number average molecular weight below 50,000 for use as lubricating oil and fuel oil additives.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: September 20, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Chung Kun Shih, Craig W. Gleason, Edmund H. Braun, II