Patents by Inventor Larry N. Ito

Larry N. Ito 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: 8288311
    Abstract: A process and catalyst for the hydro-oxidation of an olefin having three or more carbon atoms, such as propylene, to form an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen in the presence of hydrogen and a hydro-oxidation catalyst under reaction conditions; the catalyst comprising gold nanoparticles deposited on a nanoporous titanium-containing support, prepared by depositing a gold-ligand cluster complex onto the support to form a catalyst precursor, and then heating and/or chemically treating the catalyst precursor to form the hydro-oxidation catalyst composition. The hydro-oxidation catalyst exhibits stabilized catalyst activity, enhanced lifetime, and improved hydrogen efficiency.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: October 16, 2012
    Inventors: Sandeep S. Dhingra, Rick C. Schroden, Keith J. Watson, David G. Barton, Robert G. Bowman, Larry N. Ito, David L. Trent, Heiko Weiner
  • Publication number: 20100076208
    Abstract: A process and catalyst for the hydro-oxidation of an olefin having three or more carbon atoms, such as propylene, to form an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen in the presence of hydrogen and a hydro-oxidation catalyst under reaction conditions; the catalyst comprising gold nanoparticles deposited on a nanoporous titanium-containing support, prepared by depositing a gold-ligand cluster complex onto the support to form a catalyst precursor, and then heating and/or chemically treating the catalyst precursor to form the hydro-oxidation catalyst composition. The hydro-oxidation catalyst exhibits stabilized catalyst activity, enhanced lifetime, and improved hydrogen efficiency.
    Type: Application
    Filed: November 7, 2007
    Publication date: March 25, 2010
    Inventors: Sandeep S. Dhingra, Rick C. Schroden, Keith J. Watson, David G. Barton, Robert G. Bowman, Larry N. Ito, David L. Trent, Heiko Weiner
  • Patent number: 7629287
    Abstract: A method of reclaiming a titanosilicate from a deactivated or spent oxidation catalyst containing a titanosilicate having deposited thereon one or more catalytic metals, such as gold, and optionally, one or more promoter metals, the method involving treating the deactivated catalyst with an oxidant; contacting the oxidant-treated catalyst with acid, preferably aqua regia; washing the titanosilicate to remove residual acid; and optionally drying and/or calcining. A method of reconstituting an active oxidation catalyst from a spent or deactivated oxidation catalyst, the method involving reclaiming the titanosilicate as noted above, and then depositing one or more catalytic metals and, optionally, one or more promoter metals onto the reclaimed titanosilicate.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 8, 2009
    Assignee: Dow Global Technologies, Inc.
    Inventors: Susan J. Siler, Joseph D. Henry, David L. Trent, Larry N. Ito, David G. Barton
  • Patent number: 6350922
    Abstract: A process for making 2,3-dihalopropanol including reacting 2,3-dihalopropanal with a hydrogenating agent in the presence of an iridium and a second transition metal mixed metal catalyst where the second transition metal is selected from the group comprising ruthenium, iron, molybdenum, tungsten, rhenium, osmium, manganese or vanadium, under conditions such that 2,3-dihalopropanol is formed. The 2,3-dihalopropanol is particularly useful in a process for making epihalohydrin.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: February 26, 2002
    Assignee: The Dow Chemical Company
    Inventors: Paul C. Vosejpka, Dennis A. Hucul, Bob R. Maughon, Larry N. Ito, Robert M. Campbell
  • Patent number: 5763711
    Abstract: A process for converting 3,3-dichloropropene in an intermediate boiling byproduct stream from a process of making allyl chloride by the chlorination of propylene to cis- or trans-1,3-dichloropropene or a mixture of these, wherein the 3,3-dichloropropene is contacted in the liquid phase with an alumina, silica or zeolite catalyst, characterized in that the alumina, silica or zeolite catalyst is selected to possess a predominance of basic sites as associated with a high alkali or alkaline earth metals content, for increased conversion and productivity and reduced catalyst deactivation rates.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: June 9, 1998
    Assignee: The Dow Chemical Company
    Inventor: Larry N. Ito
  • Patent number: 5637548
    Abstract: A process for preparing a bimetallic catalyst useful for the hydrodechlorination of chlorinated hydrocarbons, comprising impregnating a support with an active hydrogenating metal from a salt solution of the metal, recovering and drying the thus-impregnated support, reducing the impregnated support by exposure to hydrogen and oxidizing the active hydrogenating metal on said support to an oxidized state by exposure to an oxidizing environment, then impregnating the thus-treated support with a surface segregating metal from a salt solution thereof, aging the support/salt solution mixture over a period of time at an elevated temperature, and finally cooling, recovering and drying the catalyst before charging the same to a reactor for reduction or reduction and chloride source pretreatment and subsequent use.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: June 10, 1997
    Assignee: The Dow Chemical Company
    Inventors: Larry N. Ito, Mark E. Jones, Simon R. Bare
  • Patent number: 5510546
    Abstract: An improved process for converting 3,3-dichloropropene in an intermediate boiling byproduct stream from a process of making allyl chloride by the chlorination of propylene to cis- or trans-1,3-dichloropropene or a mixture of these, wherein the intermediate boiling byproduct stream is processed batchwise or continuously to dry the stream to a water content of less than about 15 parts per million by weight, and then is contacted in the liquid phase with an alumina, silica or zeolite catalyst under conditions effective to carry out the conversion.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: April 23, 1996
    Assignee: The Dow Chemical Company
    Inventor: Larry N. Ito
  • Patent number: 5476984
    Abstract: A novel, improved process and catalyst are provided for the catalytic hydrodechlorination of a chlorinated alkane to its corresponding less-chlorinated and preferably non-chlorinated alkane, for example the hydrodechlorination of 1,2-dichloropropane to propane, the catalyst comprising a mixture of active Group VIII hydrogenating metals in elemental or compound form on a support.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: December 19, 1995
    Assignee: The Dow Chemical Company
    Inventors: Mark D. Cisneros, Michael T. Holbrook, Larry N. Ito
  • Patent number: 5476979
    Abstract: A process for converting a chlorinated alkene feedstock including two or more chlorines to reaction products including a less-chlorinated alkene in a commercially substantial proportion, comprising reacting the chlorinated alkene feedstock with hydrogen in the presence of a catalyst consisting essentially of a Group VIII metal other than rhodium, palladium or ruthenium and a Group IB metal on a support.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: December 19, 1995
    Assignee: The Dow Chemical Company
    Inventors: Larry N. Ito, Craig B. Murchison, Michael T. Holbrook, A. Dale Harley, David D. Smith
  • Patent number: 5453557
    Abstract: A process for the catalytic conversion of various chlorinated hydrocarbon byproducts and waste products especially to less chlorinated, useful or salable products, in which a chlorinated hydrocarbon feedstock containing two or more chlorines is reacted with hydrogen in the presence of a catalyst consisting essentially of an active hydrogenating metal component such as platinum in elemental or compound form, and a surface segregating metal component such as copper in elemental or compound form on a support.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: September 26, 1995
    Assignee: The Dow Chemical Company
    Inventors: A. Dale Harley, Michael T. Holbrook, David D. Smith, Mark D. Cisneros, Larry N. Ito, Craig B. Murchison
  • Patent number: 5430214
    Abstract: A hydrodehalogenation process, comprising the step of reacting a saturated halohydrocarbon (e.g., 1,2-dichloropropane) with hydrogen or a hydrogen donor in the gas phase in the presence of a catalytically effective amount of ruthenium on a support, and at temperatures of at least about 100 degrees Celsius, to produce reaction products including a corresponding non-halogenated, unsaturated hydrocarbon (e.g., propylene).
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: July 4, 1995
    Assignee: The Dow Chemical Company
    Inventors: David D. Smith, Michael T. Holbrook, A. Dale Harley, Larry N. Ito