Patents by Inventor Maryann Devine

Maryann Devine 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 molecular weight basic nitrogen-containing reaction products as enhanced phosphorus/boron carriers in lubrication oils
    Patent number: 5811377
    Abstract: An oil-soluble reaction product of phosphorus-, low molecular weight basic nitrogen-, and optional boron-containing compounds is provided. This reaction product can solubilize significantly more phosphorus and boron per weight of compound than other known compounds and is used as an antiwear, antioxidant, and extreme pressure additive in lubrication oils.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: September 22, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Raymond Frederick Watts, Michael Gerald Romanelli, Ricardo Alfredo Bloch, Maryann Devine, Jack Ryer
  • Power transmitting fluids with improved anti-shudder durability
    Patent number: 5750476
    Abstract: The anti-shudder durability of power transmitting fluids, particularly automatic transmission fluids, is improved by incorporating a combination of low potency friction modifiers and phosphorus-containing compounds. The anti-shudder durability of these fluids may be further enhanced by inclusion of a metallic detergent and/or a polyol ester friction modifier.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: May 12, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Roger Keith Nibert, Ricardo Alfredo Bloch, Maryann Devine, Manoj Tandon, Raymond Frederick Watts
  • Phosphorus-and mono- or di-sulfide-containing additives for lubrication oils
    Patent number: 5527478
    Abstract: An oil-soluble reaction product of at least one nitrogen-containing compound, at least one phosphorus-containing compound, and at least one mono- or di-sulfide-containing alkanol is provided, which improves friction and/or wear performance of a lubrication oil.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: June 18, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael G. Romanelli, Raymond F. Watts, Maryann Devine
  • Phosphorus- and mono- or di-sulfide-containing additives for lubrication oils
    Patent number: 5468403
    Abstract: An oil-soluble reaction product of at least one nitrogen-containing compound, at least one phosphorus-containing compound, and at least one mono- or di-sulfide-containing alkanol is provided, which improves friction and/or wear performance of a lubrication oil.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: November 21, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael G. Romanelli, Raymond F. Watts, Maryann Devine