Patents by Inventor David C. Eisenberg

David C. Eisenberg 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).

  • Patent number: 6548723
    Abstract: A multistep process for the selective production of an oligomer oil having predetermined properties in which the first step involves the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a catalyst comprising a bulky ligand transition metal catalyst and in which a subsequent step involves the olgiomerization of at least a preselected fraction of the product of the first step.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 15, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Vahid Bagheri, David C. Eisenberg, Kevin S. Ratliff, Ranier Benda, Carroll W. Lanier
  • Patent number: 6548724
    Abstract: A multistep process for the selective production of an oligomer oil having predetermined properties in which the first step involves the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a catalyst comprising a bulky ligand transition metal catalyst and in which a subsequent step involves the olgiomerization of at least a preselected fraction of the product of the first step.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 15, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Vahid Bagheri, David C. Eisenberg, Kevin S. Ratliff, Ranier Benda, Carroll W. Lanier
  • Publication number: 20010041817
    Abstract: A multistep process for the selective production of an oligomer oil having predetermined properties in which the first step involves the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a catalyst comprising a bulky ligand transition metal catalyst and in which a subsequent step involves the olgiomerization of at least a preselected fraction of the product of the first step.
    Type: Application
    Filed: March 22, 2001
    Publication date: November 15, 2001
    Inventors: Vahid Bagheri, David C. Eisenberg, Kevin S. Ratliff, Ranier Benda, Carroll W. Lanier
  • Publication number: 20010041818
    Abstract: A multistep process for the selective production of an oligomer oil having predetermined properties in which the first step involves the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a catalyst comprising a bulky ligand transition metal catalyst and in which a subsequent step involves the olgiomerization of at least a preselected fraction of the product of the first step.
    Type: Application
    Filed: March 22, 2001
    Publication date: November 15, 2001
    Inventors: Vahid Bagheri, David C. Eisenberg, Kevin S. Ratliff, Ranier Benda, Carroll W. Lanier
  • Patent number: 5543537
    Abstract: Trimethylaluminum is made by an alkyl exchange process by first reacting a trialkylaluminum which has at least two carbon atoms in its alkyl groups with a methyl halide, optionally in the presence of an alkyl exchange catalyst, and then fractionally distilling trimethylaluminum from the product mixture in the presence of trialkylaluminum having at least two carbon atoms in its alkyl groups so as to convert the dimethylaluminum halide by-product of the alkyl exchange reaction into trimethylaluminum.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: August 6, 1996
    Assignee: Albemarle Corporation
    Inventors: David C. Eisenberg, Milind M. Pradhan, Milham S. Howie
  • Patent number: 5276220
    Abstract: An improved process for preparing an alkyl chain growth product by the chain growth reaction of .alpha.-olefin in an aluminum alkyl uses a catalyst system which comprises an actinide metallocene.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: January 4, 1994
    Assignee: Ethyl Corporation
    Inventors: Edward G. Samsel, David C. Eisenberg
  • Patent number: 5177235
    Abstract: This invention relates to a process for preparing tetrahydrocarbylsilane in high yield, comprising: a) forming a reaction mass from molten metal and trihydrocarbylaluminum, in an hydrocarbon solvent under an inert gas atmosphere; b) maintaining the reaction mass at a temperature in the range of from about 100.degree. to about 130.degree. C. for a period of time sufficient to form sodium tetrahydrocarbylaluminate; c) contacting the sodium tetrahydrocarbylaluminate with organotrihalosilane; and d) heating the contacted tetrahydrocarbylaluminate and organotrihalosilane to a temperature and for a period of time sufficient to form the tetrahydrocarbylsilane, wherein the tetrahydrocarbylaluminate and tetrahydrocarbylsilane are formed at a pressure of less than about 3000 KPa and wherein the hydrocarbyl group of the tetrahydrocarbyl silane is one or a mixture of hydrocarbyl groups having less than about 8 carbon atoms each.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: January 5, 1993
    Assignee: Ethyl Corporation
    Inventors: David C. Eisenberg, Gene C. Robinson