Patents by Inventor El-Ahmadi I. Heiba

El-Ahmadi I. Heiba 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).

  • Process for preparation of lactone-esters
    Patent number: 4029675
    Abstract: A process for the continuous preparation of lactone-esters which comprises: passing a liquid feed of a branched-chain alkenylsuccinic anhydride containing a chain wherein branching is derived from C.sub.3 to C.sub.10 olefins, and an alcohol in a hydrocarbon solvent through a packed bed of a cationic exchange resin catalyst containing acid groups, in a reaction zone, said reaction zone being maintained at a pressure from about 1 to about 20 atmospheres and at a temperature from about 120.degree. C to about 160.degree. C.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: June 14, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Albert L. Williams, El-Ahmadi I. Heiba
  • Selective reactions of free radicals with olefins in the presence of an ion of Mn, V, or Ce
    Patent number: 4011239
    Abstract: An olefin is reacted with a source of X free radical in the presence of an ion of manganese, vanadium, or cerium having a valence higher than the lowest valence above the zero valent form of the metal to form derivatives of the olefin that contain one or more functional groups. The free radical X is one that is resistant to substantial oxidation by the ion of the metal and is obtained from ketones, aldehydes, esters, nitriles, nitroparaffins, sulfoxides, thiosulfonic acid esters, alkanesulfonic acids, alkanesulfinic acids, and thiols.
    Type: Grant
    Filed: September 24, 1973
    Date of Patent: March 8, 1977
    Assignee: Mobil Oil Corporation
    Inventors: El Ahmadi I. Heiba, Ralph M. Dessau
  • Alkali metal or tetraalkylammonium arylcarbamates
    Patent number: 3997597
    Abstract: Organic compositions, particularly lubricating compositions in the form of lubricating oils and greases, are provided, containing, as antioxidants, alkali metal arylcarbamates.
    Type: Grant
    Filed: June 17, 1974
    Date of Patent: December 14, 1976
    Assignee: Mobil Oil Corporation
    Inventors: Robert F. Bridger, El-Ahmadi I. Heiba, Stamoulis Stournas