Patents by Inventor Gerassimo Frangatos

Gerassimo Frangatos 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).

  • Polyoxyalkylene diamides as lubricant additives
    Patent number: 4743387
    Abstract: Effective demulsifier additives prepared by the reaction of polyalkylenediamines with such carboxylic acids as naphthoic and abietic provide good resistance to water.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: May 10, 1988
    Assignee: Mobil Oil Corporation
    Inventors: Gerassimos Frangatos, Robert H. Davis
  • Mercapto-thiadiazole reaction products as multifunctional lubricant additives and compositions thereof
    Patent number: 4661273
    Abstract: Zinc/phosphorus-free antiwear agents and antioxidants are provided by reaction products of 2,5-dimercapto-1,3,4-thiadiazole with mercaptans and thionyl chloride.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: April 28, 1987
    Assignee: Mobil Oil Company
    Inventors: Gerassimo Frangatos, Robert H. Davis
  • Phosphorus-containing reaction products as antiwear and load carrying additives for lubricants
    Patent number: 4563299
    Abstract: Excellent antiwear and load-carrying characteristics are imparted to lubricants when dialkyl phosphonates which have undergone condensation reactions with aldehydes and polyamines are incorporated therein.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: January 7, 1986
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Sulfurized amine condensation products and lubricant compositions containing same
    Patent number: 4536312
    Abstract: The present invention is directed to condensation products of amino substituted nitrogen heterocycles, such as pyridines, with unsaturated carboxylic acids as well as their sulfurization products. It has been found that additive amounts of such condensation reaction products when incorporated into lubricant compositions provide effective anti-rust properties against, for example, salt water corrosion.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: August 20, 1985
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Lubricant composition containing phosphite-diarylamine-carbonyl compound reaction product
    Patent number: 4331546
    Abstract: The invention is directed to lubricants having therein an antioxidant quantity of a reaction product from phosphonates, amines and carbonyl-containing compounds.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: May 25, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Sulfurized aminoguanidine reaction product and lubricant compositions containing same
    Patent number: 4295982
    Abstract: Products from aminoguanidines or their salts, monocarboxylic acids and sulfur and their use as anti-rust and anti-corrosion additives are covered herein.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: October 20, 1981
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Amine derivatives of dialkylphosphonate-alklmaleate ester reaction products as antiwear/load carrying additives and lubricants containing same
    Patent number: 4267063
    Abstract: Excellent load-carrying and antiwear additives are provided when reaction products of dialkylphosphonates and maleate esters are converted to amine derivatives.
    Type: Grant
    Filed: February 20, 1980
    Date of Patent: May 12, 1981
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Lubricant compositions
    Patent number: 4229310
    Abstract: The invention provides a lubricant additive and a lubricant composition having improved demulsifying and anti-wear properties resulting from the addition thereto of such additive, which is made by reacting a partially esterified multifunctional alcohol with a phosphorus oxyhalide or a trihydrocarbyl phosphate.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: October 21, 1980
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Lubricant compositions
    Patent number: 4193883
    Abstract: The invention provides a lubricant additive having improved antioxidant and antiwear properties made by (1) reacting an alkenylsuccinic anhydride (ASA) with an aminopolyhydroxy compound and (2) reacting the product thus obtained with a phosphorus trihalide and a polyhydroxyaromatic compound. The invention also provides a lubricant composition containing the additive.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: March 18, 1980
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Lubricant compositions
    Patent number: 4159960
    Abstract: The antiwear and load carrying properties of lubricants are improved by incorporating therein a product prepared by reacting a trihydrocarbyl phosphate with a methallyl halide and a halogen.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: July 3, 1979
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Lubricant composition
    Patent number: 4098707
    Abstract: The antiwear and load carrying properties of lubricants are improved by incorporating therein a product prepared by reacting a chlorinated wax with a trihydrocarbyl phosphite.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: July 4, 1978
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos
  • Lubricant composition
    Patent number: 4077892
    Abstract: The invention provides a lubricant composition having improved antiwear properties resulting from the addition thereto of a product made by reacting a partially esterified multifunctional alcohol with a phosphorus trihalide or a dihydrocarbyl phosphonate.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: March 7, 1978
    Assignee: Mobil Oil Corporation
    Inventor: Gerassimos Frangatos