Patents by Inventor Derek Vincent Tyers

Derek Vincent Tyers 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).

  • Homogeneous process for the hydrogenation of carboxylic acids and derivatives thereof
    Patent number: 9636671
    Abstract: A homogenous process for the hydrogenation of the carboxylic acids and/or derivatives thereof in the presence of a catalyst comprising ruthenium, rhodium, iron, osmium or palladium, and an organic phosphine is described in which the hydrogenation is carried out in the presence of at least about 1% by weight water. A process for regenerating a catalyst comprising ruthenium, rhodium, iron, osmium or palladium and an organic phosphine is also described in which the regeneration is carried out in the presence of hydrogen and water.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: May 2, 2017
    Assignee: Davy Process Technology Limited
    Inventors: Melvyn Kilner, Derek Vincent Tyers, Simon Peter Crabtree, Michael Anthony Wood
  • Homogeneous Process for the Hydrogenation of Carboxylic Acids and Derivatives Thereof
    Publication number: 20130029831
    Abstract: A homogenous process for the hydrogenation of the carboxylic acids and/or derivatives thereof in the presence of a catalyst comprising ruthenium, rhodium, iron, osmium or palladium, and an organic phosphine is described in which the hydrogenation is carried out in the presence of at least about 1% by weight water. A process for regenerating a catalyst comprising ruthenium, rhodium, iron, osmium or palladium and an organic phosphine is also described in which the regeneration is carried out in the presence of hydrogen and water.
    Type: Application
    Filed: August 17, 2012
    Publication date: January 31, 2013
    Inventors: Melvyn Kilner, Derek Vincent Tyers, Simon Peter Crabtree, Michael Anthony Wood
  • Homogenous process for the hydrogenation of carboxylic acids and derivatives thereof
    Patent number: 7709689
    Abstract: A homogenous process for the hydrogenation of the carboxylic acids and/or derivatives thereof in the presence of a catalyst comprising ruthenium, rhodium, iron, osmium or palladium, and an organic phosphine is described in which the hydrogenation is carried out in the presence of at least about 1% by weight water. A process for regenerating a catalyst comprising ruthenium, rhodium, iron, osmium or palladium and an organic phosphine is also described in which the regeneration is carried out in the presence of hydrogen and water.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: May 4, 2010
    Assignee: Davy Process Technololgy Limited
    Inventors: Melvyn Kilner, Derek Vincent Tyers, Simon Peter Crabtree, Michael Anthony Wood
  • Homogeneous Process for the Hydrogenation of Carboxylic Acids and Derivatives Thereof
    Publication number: 20100099550
    Abstract: A homogenous process for the hydrogenation of the carboxylic acids and/or derivatives thereof in the presence of a catalyst comprising ruthenium, rhodium, iron, osmium or palladium, and an organic phosphine is described in which the hydrogenation is carried out in the presence of at least about 1% by weight water. A process for regenerating a catalyst comprising ruthenium, rhodium, iron, osmium or palladium and an organic phosphine is also described in which the regeneration is carried out in the presence of hydrogen and water.
    Type: Application
    Filed: August 24, 2009
    Publication date: April 22, 2010
    Inventors: Melvyn Kilner, Derek Vincent Tyers, Simon Peter Crabtree, Michael Anthony Wood
  • Hydrogenolysis of Sugar Feedstock
    Publication number: 20090306365
    Abstract: A process for the hydrogenolysis of a sugar feedstock in the presence of a catalyst comprising: (a) ruthenium or osmium; and (b) an organic phosphine; and wherein the hydrogenolysis is carried out in the presence of water and at a temperature of greater than 150° C.
    Type: Application
    Filed: August 18, 2009
    Publication date: December 10, 2009
    Inventors: Simon Peter Crabtree, Derek Vincent Tyers
  • Homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides thereof
    Patent number: 7498450
    Abstract: A homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides in the presence of a catalyst comprising: (a) ruthenium, rhodium, iron, osmium or palladium; and (b) an organic phosphine; wherein the hydrogenation is carried out in the presence of at least about 1% by weight water and wherein the reaction is carried out at a pressure of from about 500 psig to about 2000 psig and a temperature of from about 200° C. to about 300° C. such that from about 1 mol to about 10 mol of hydrogen are used to strip 1 mole of product from the reactor.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: March 3, 2009
    Assignee: Davy Process Technology Limited
    Inventors: Michael Anthony Wood, Simon Peter Crabtree, Derek Vincent Tyers
  • Process for the production of lactams
    Patent number: 7427684
    Abstract: A homogeneous process for the hydrogenation of dicarboxylic acid and/or derivative thereof with an amine in the presence of a catalyst comprising: (a) ruthenium or osmium; and (b) an organic phosphine; and wherein the hydrogenation is carried out in the presence of water.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: September 23, 2008
    Assignee: Davy Process Technology Limited
    Inventors: Simon Peter Crabtree, Derek Vincent Tyers, Mohammed Sharif