Patents by Inventor George W. Schriver

George W. Schriver 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).

  • Publication number: 20100113822
    Abstract: The invention is directed to a process for the preparation of ?,?-unsaturated acids, esters and amides from ?- or ?-hydroxycarboxylic acids or esters or precursors in high yields and high selectivity. The ?,?-unsaturated acids or esters are optionally prepared in the presence of specific dehydration and/or esterification catalysts. The ?,?-unsaturated amides or substituted amides are prepared optionally in the presence of a dehydration and/or amidation catalyst. The source of ?- or ?-hydroxycarboxylic acids or precusor is preferably from a renewable resource. The precursor is defined herein.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 6, 2010
    Inventors: Liliana Craciun, Gerald P. Benn, John Dewing, George W. Schriver, William J. Peer, Bernd Siebenhaar, Urs Siegrist
  • Patent number: 7538247
    Abstract: The invention is directed to a process for the preparation of ?,?-unsaturated acids, esters and amides from ?- or ?-hydroxycarboxylic acids or esters or precursors in high yields and high selectivity. The ?,?-unsaturated acids or esters are optionally prepared in the presence of specific dehydration and/or esterification catalysts. The ?,?-unsaturated amides or substituted amides are prepared optionally in the presence of a dehydration and/or amidation catalyst. The source of ?- or ?-hydroxycarboxylic acids or precusor is preferably from a renewable resource. The precursor is defined herein.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: May 26, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Liliana Craciun, Gerald P. Benn, John Dewing, George W. Schriver, William J. Peer, Bernd Siebenhaar, Urs Siegrist
  • Patent number: 6323306
    Abstract: High molecular weight, water-soluble, cross-linked cationic polymers are prepared by reacting amine-functionalized cationic base polymers, in which the monomer units of the base polymer contain from about 0.05 to about 5.0% amine functionalized monomer units and from about 95 to about 99.95% additional monomer units, including cationic monomer units and optional non-cationic monomer units, with an amount of a cross-linking agent, reactive with the amines of the base polymer, providing between about 0.02 to about 3.0 equivalents of cross-linking agent reactive groups per each mole of amine. The polymers are useful as coagulants and as coatings.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: November 27, 2001
    Assignee: Ciba Specialty Chemicals Water Treatments Ltd.
    Inventors: Zhiqiang Song, George W. Schriver, Dennis M. Mahoney, Louis E. Trapasso
  • Patent number: 5562851
    Abstract: This invention provides sulfur-containing carbonate reaction product additives which are useful as phosphorus-free antiwear additives in lubricating oils, particularly automatic transmission fluids.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: October 8, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: George W. Schriver, James S. Puckace
  • Patent number: 5503643
    Abstract: The fuel oil-substituted fullerene compositions of the invention are useful for improving the cold flow properties of fuels. Typically the substituted fullerenes have the general formula C.sub.Fn (GRy)x, where C.sub.Fn is a fullerene, n is the number of carbon atoms in the fullerene, x is an integer from 1 up to the maximum number of sites on the fullerene molecule available for adding substituent groups, G is a linking group that may be absent or present, and when present is an oxygen, sulfur, nitrogen, phenol, aniline, Mannich base or diazocarboxylate-derived group, y is an integer determined by the identity of G, and when y equals 1 R is a substituted or unsubstituted hydrocarbyl group and when y equals 2 at most one R may be hydrogen while the remainder are hydrocarbyl groups, and the R group may be the same or different, and wherein when x is greater than 1 the GRy may be the same or different and at most one R may be hydrogen.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 2, 1996
    Assignee: Exxon Research and Engineering Company
    Inventors: George W. Schriver, Abhimanyu O. Patil, David J. Martella, Kenneth Lewtas
  • Patent number: 5504256
    Abstract: A method is provided for preparing organic hydroperoxides by oxidizing aryl alkyl hydrocarbons having a benzylic hydrogen with an oxygen containing gas using as a catalyst an oxo (hydroxo) bridged tetranuclear metal complex having a mixed metal core, one metal of the core being a divalent metal selected from Zn, Cu Fe, Co, Ni, Mn or mixtures thereof and another metal being a trivalent metal selected from In, Fe, Mn, Ga, and Al.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: April 2, 1996
    Assignee: Exxon Research and Engineering Company
    Inventors: Jeffrey E. Bond, Sergiu M. Gorun, George W. Schriver, Robert T. Stibrany, Thomas H. Vanderspurt
  • Patent number: 5454961
    Abstract: The present invention relates to novel compositions that contain a base oil and certain substituted fullerenes effective to improve the cold flow properties of the base oil. Typically the substituted fullerenes have the general formula:C.sub.Fn (GR.sub.y).sub.xIn the formula C.sub.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: October 3, 1995
    Assignee: Exxon Research & Engineering Co.
    Inventors: George W. Schriver, Abhimanyu O. Patil, David J. Martella, Kenneth Lewtas
  • Patent number: 5292444
    Abstract: This invention relates to novel compositions of matter that are lube oils comprising an oil/hydrocarbon soluble fullerene grafted amine-containing polymers and a suitable base oil and, optionally other suitable additives for use as a lubricating oil. This invention also relates to the method of using the fullerene grafted amine-containing polymer itself as additives to base oils. The graft is made by reacting a fullerene with a primary or secondary amine-containing polymer, preferably hydrocarbon containing polymers. Suitable starting polymers are those containing primary or secondary amino groups, e.g., EPDM amine, PIB-amine, PIBSA-PAM, and Mannich based polymers. The lube oil compositions are made by adding an effective amount of the polymer, and optionally, other suitable additives to a base oil typically on an active ingredient basis of from about 0.01 to about 20 wt. %.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: March 8, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Abhimanyu O. Patil, George W. Schriver, Robert D. Lundberg
  • Patent number: 5292813
    Abstract: This invention relates to novel compositions of matter, fullerene graft amine-containing polymers, and the process of making them. The graft is made by reacting a fullerene with a primary or secondary amine-containing polymer, preferably a hydrocarbon containing polymer in effective amounts, typically from about 10:1 to about 1:10 mole ratio of reactive amine in polymer to fullerene for a time and under conditions effective to produce the compositions. Suitable starting polymers are those containing primary or secondary amino groups, e.g., EPDM amine, PIB-amine, PIBSA-PAM, and Mannich based polymers. The preferred polymers are oil soluble, as the novel compositions of that type may be used as viscosity modifiers and lube additives. The crosslinked compositions may be used in essentially any application as the original polymer, but in which an increase in tensile strength would be desired.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: March 8, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Abhimanyu O. Patil, George W. Schriver, Robert D. Lundberg