Patents by Inventor Seymour J. Lapporte

Seymour J. Lapporte 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).

  • Method for making anhydride from ester using a palladium-containing catalyst system
    Patent number: 5220060
    Abstract: Methylene and oxymethylene bis-esters are produced by the reaction of an aliphatic ester of a carboxylic acid, formaldehyde and carbon monoxide in the presence of a catalytic amount of a Group VIII noble transition metal compound, an iodide or bromide promoter, and a proton donor.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: June 15, 1993
    Assignee: Chevron Research and Technology Company
    Inventors: Seymour J. Lapporte, William G. Toland
  • Methylene and oxymethylene bis-ester production
    Patent number: 5008451
    Abstract: Methylene and oxymethylene bis-esters are produced by the reaction of an aliphatic ester of a carboxylic acid, formaldehyde and carbon monoxide in the presence of a catalytic amount of a Group VIII noble transition metal compound, an iodide or bromide promoter, and a proton donor.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: April 16, 1991
    Assignee: Chevron Research Company
    Inventors: Seymour J. Lapporte, William G. Toland
  • Nitration process for the preparation of 2,6-dialkylaniline
    Patent number: 4340758
    Abstract: A process for the preparation of 2,6-dialkylaniline which comprises the reaction of 1,3-dialkylbenzene with isobutene in the presence of a hydrogen fluoride catalyst to form 1,3-dialkyl-5-tertiary-butylbenzene, which is subsequently nitrated in the presence of a soluble mercuric salt catalyst to form 2-nitro-1,3-dialkyl-5-tertiary-butylbenzene, which is then catalytically hydrogenated to give 2,6-dialkyl-4-tertiary-butylaniline, followed by pyrolysis in the presence of a heterogeneous acidic catalyst.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: July 20, 1982
    Assignee: Chevron Research Company
    Inventors: Seymour J. Lapporte, David M. Marquis
  • Process for the production of 1,4-diacyloxy-2-butene from butadiene
    Patent number: 4000185
    Abstract: 1,4-DIACYLOXY-2-BUTENE USEFUL AS A DIOL PRECURSOR IS PRODUCED BY REACTING BUTADIENE WITH AN ALKALI METAL SALT IN THE PRESENCE OF IODINE, IODINE MONOCHLORIDE OR IODINE TRICHLORIDE.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: December 28, 1976
    Assignee: Chevron Research Company
    Inventors: Victor P. Kurkov, Seymour J. Lapporte