Patents by Inventor Abraham O. M. Okorodudu

Abraham O. M. Okorodudu 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).

  • Borated dihydrocarbyl dithiocarbamate lubricant additives and composition thereof
    Patent number: 5370806
    Abstract: Borated dihydrocarbyl dithiocarbamate reaction products have been found to be effective antioxidant/antiwear multifunctional additives for lubricants.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: December 6, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Liehpao O. Farng, Andrew G. Horodysky, Abraham O. M. Okorodudu
  • Multifunctional ashless dispersants
    Patent number: 5362410
    Abstract: The incorporation of the heterocyclic saccharin functionality into the alkenylsuccinimide dispersant structures via the Mannich alkylaminoalkylation procedure provides a class of ashless non-phosphorus dispersants with multifunctional antiwear, antioxidant and corrosion inhibiting properties in lubricant compositions.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: November 8, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Abraham O. M. Okorodudu, Angeline B. Cardis
  • Multifunctional ashless dispersants derived from Mannich reaction of alkyl- or alkenylsuccinimides, dimercaptothiadiazoles, and carbonyl compounds
    Patent number: 5186850
    Abstract: The incorporation of the heterocyclic dimercaptothiadiazole functionality into the alkenylsuccinimide dispersant structures via the Mannich alkylaminomethylkation procedure provides a class of ashless non-phosphorus dispersants with multifunctional antiwear, antioxidant and corrosion inhibitor properties in lubricant compositions.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: February 16, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Abraham O. M. Okorodudu, Angeline B. Cardis, Ross A. Kremer
  • Borated hydroxyalkyl esters of alkyl- or alkenylsuccinimide-derived dithiocarbamic acids as multifunctional ashless dispersants
    Patent number: 5182036
    Abstract: Borated hydroxyalkyl esters of alkyl- or alkenylsuccinimide-derived dithiocarbamic acids, have been found to be effective multifunctional additives in lubricant and fuel applications.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: January 26, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Abraham O. M. Okorodudu, Angeline B. Cardis
  • Borated hydroxyalkyl esters of dithiocarbamic acids as multifunctional additives for lubricant compositions
    Patent number: 5126063
    Abstract: Lubricating oil and grease compositions contain borated hydroxyalkyl esters of amine or metal salts of diorganodithiocarbamic acid, such as N,N'-di-(2-ethylhexyl) dithiocarbamic acid, and hydrocarbylene oxie, such as propylene oxide, as antioxidant, load-carrying and friction modifying additives.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: June 30, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Liehpao O. Farng, Abraham O. M. Okorodudu, Andrew G. Horodysky
  • Benzenesulfonyl derivatives of N,N-diorganodithocarbamic acids as multifunctional additives for lubricating oil compositions
    Patent number: 5120457
    Abstract: Products derived from the reaction of organic or metal salts of diorganodithiocarbamic acids with benzenesulfonyl halides, impart excellent multifunctional antiwear and antioxidant properties to lubricating oil compositions.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: June 9, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Angeline B. Cardis, Abraham O. M. Okorodudu
  • N,N-diorganodithiocarbamate derivatives and lubricant compositions containing same
    Patent number: 5030368
    Abstract: Disclosed are products derived from the reaction of amine or metal salts of N,N-diorganodithiocarbamic acids with organo phosphorus halides. These compositions are useful as antioxidants and antiwear additives in lubricating oil compositions.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: July 9, 1991
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Reaction products of N,N-diorganodithiocarbamates with thionyl chloride and lubricant compositions containing same
    Patent number: 4867893
    Abstract: Disclosed are products derived from the reaction of amine or metal salts of N,N-diorganodithiocarbamic acids with thionyl chloride, SOCl.sub.2. These compositions are useful as antioxidants and antiwear additives in lubricating oil compositions.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: September 19, 1989
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • N,N-diorganodithiocarbamate-alkylthiosulfinyl halide reaction products and lubricant compositions containing same
    Patent number: 4859356
    Abstract: Disclosed are products derived from the reaction of amine or metal salts of N,N-diorganodithiocarbamic acids with alkylthiosulfinyl halides. These compositions are useful as antioxidants and antiwear additives in lubricating oil compositions.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: August 22, 1989
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Non-metallic multifunctional lubricant additives and compositions thereof
    Patent number: 4826629
    Abstract: Multifunctional (antiwear/anitoxidant) additives prepared by reaction of diorganophosphorodithioic acids and a sulfurous-oxyhalide, e.g. thionyl chloride impart resistance to oxidation and abrasion when incorporated into lubricating oils.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: May 2, 1989
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Method for preparing a methylene-bis-(O,O-diorganophosphorodithiato)-substituted hindered phenol
    Patent number: 4532084
    Abstract: Method for making methylene-bis-diorganophosphorodithiato-substituted hindered phenols by conversion of hindered phenols to the corresponding hindered phenol aldehydes and subsequent reaction, without isolation, with a diorganophosphorodithioic acid, which results in economically advantageous and simplified processing as well as minimization of wasteful and costly by-products.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: July 30, 1985
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Substituted dimercapto thiadiazoles and lubricant compositions containing same
    Patent number: 4410703
    Abstract: Lubricants are stabilized against wear and corrosion by adding an additive amount of a novel substituted thiadiazole. These are derived from 2,5-dimercapto-1,3,4-thiadiazole and other moieties, as for example, an isocyanate moiety.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: October 18, 1983
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Phosphorodithioate products of hydrocarbyl imino-methylene-substituted hindered phenols
    Patent number: 4405470
    Abstract: Product made by reacting a hindered phenol aldehyde with a primary amine followed by reacting the product thus obtained with a diorganophosphorodithioic acid, and lubricants containing same.
    Type: Grant
    Filed: January 22, 1982
    Date of Patent: September 20, 1983
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Reaction products of organophosphorus halides with inorganic thiocyanates as load-carrying additives in lubricating oil compositions
    Patent number: 4252660
    Abstract: Reaction products of selected inorganic thiocyanates and alkyl or aryl phosphorus halides provide additive compounds which impart excellent antiwear and load-carrying protection to lubricant base stocks in which they are incorporated.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: February 24, 1981
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Lubricant compositions
    Patent number: 4198305
    Abstract: Polyesters of polysulfideorganocarboxylic acids have improved solubility in lubricant compositions and thereby impart good load-carrying properties to such lubricants when incorporated therein. Oxidized derivatives thereof wherein at least one of the sulfide groups is oxidized to a sulfoxide or a sulfone, also impart good load-carrying characteristics to lubricants containing same.
    Type: Grant
    Filed: June 14, 1978
    Date of Patent: April 15, 1980
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Additives comprising (N, N-diorganothiocarbamyl) phosphorothioites and lubricant compositions containing the same
    Patent number: 4104181
    Abstract: Novel (N, N-diorganothiocarbamyl) phosphorothioites having the following general structures: ##STR1## and mixtures thereof impart good antiwear and EP properties to lubricant compositions (e.g. gear oils and cutting oils) containing them.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: August 1, 1978
    Assignee: Mobil Oil Corporation
    Inventors: Phillip S. Landis, Abraham O. M. Okorodudu
  • Lubricant compositions containing organophosphorus derivatives of hydroxycarboxylic acids
    Patent number: 4101432
    Abstract: Certain organophosphorus derivatives of hydroxycarboxylic acids provide excellent load-carrying protection for hydrocarbon compositions when incorporated therein and are novel compounds.
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: July 18, 1978
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Lubricant compositions containing carboxylic acid esters of hindered hydroquinones
    Patent number: 4036773
    Abstract: Lubricants are stabilized against oxidation by adding thereto a stabilizing amount of an ester of a hindered hydroquinone. An example of a suitable material is (4-hydroxy-3,5-di-t-butylphenyl)laurate.
    Type: Grant
    Filed: December 27, 1974
    Date of Patent: July 19, 1977
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Organophosphorus derivatives of benzotriazole and their use as load carrying additives
    Patent number: 3986967
    Abstract: Lubricants are stabilized with an organophosphorusbenzotriazole product, resulting in the ability to support higher load factors in the lubricated system.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: October 19, 1976
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu
  • Substituted dimercapto thiadiazoles and lubricant compositions containing same
    Patent number: 3980573
    Abstract: Lubricants are stabilized against wear and corrosion by adding an additive amount of a novel substituted thiadiazole. These are derived from 2,5-dimercapto-1,3,4-thiadiazole and other moieties, as for example an organophosphorus moiety.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: September 14, 1976
    Assignee: Mobil Oil Corporation
    Inventor: Abraham O. M. Okorodudu