Patents by Inventor John Dewing

John Dewing 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).

  • Refrigerated liquid product dispenser
    Patent number: 7762431
    Abstract: A refrigerated liquid dispenser is disclosed. The dispenser has a pump configured for being in fluid communication with a source of a liquid product; a dispensing faucet configured for being in fluid communication with the pump, the dispensing faucet including a cold maintenance device located near the distal end of the dispensing faucet and an insulator device disposed adjacent to the cold maintenance device. The cold maintenance device has a distal end that projects beyond a lower surface of the insulator device.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: July 27, 2010
    Assignee: Automatic Bar Controls, Inc.
    Inventors: James M. Tuyls, Antonio J. Jepson, John Dewing
  • Preparation of acrylic acid derivatives from alpha- or beta-hydroxy carboxylic acids
    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
  • Preparation of acrylic acid derivatives from ?- or ?-hydroxy carboxylic acids
    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
  • Preparation of acrylic acid derivatives from alpha-or beta-hydroxy carboxylic acids
    Publication number: 20050222458
    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: March 30, 2005
    Publication date: October 6, 2005
    Inventors: Liliana Craciun, Gerald Benn, John Dewing, George Schriver, William Peer, Bernd Siebenhaar, Urs Siegrist
  • Optical fiber cable having a hydrogen-absorbing zeolite
    Patent number: 4717236
    Abstract: Hydrogen evolution in an optical fibre is suppressed by the incorporation of a hydrogen absorbent material in a water blocking compound with which the cable is filled. Typically the absorbent material is a silver substituted zeolite.
    Type: Grant
    Filed: May 8, 1985
    Date of Patent: January 5, 1988
    Assignee: STC, PLC
    Inventor: John Dewing
  • Toluene disproportionation with a surface dealuminated zeolite
    Patent number: 4677239
    Abstract: Selective and controlled dealumination of an aluminosilicate zeolite is achieved by filling the pore system of the zeolite with a foreign material, for example coke, removing part of the foreign material from the outer portion of the zeolite, for example by heating in a gas stream comprising oxygen, dealuminating the outer portion, and then removing the remainder of the foreign material. Use of such a partially dealuminated zeolite as catalyst in a toluene disproportionation reaction leads to greater selectivity to paraxylene.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: June 30, 1987
    Assignee: Imperial Chemical Industries PLC
    Inventors: John Dewing, Philip J. Hogan, Allan Stewart
  • Controlled dealumination of zeolites
    Patent number: 4533533
    Abstract: Selective and controlled dealumination of an aluminosilicate zeolite is achieved by filling the pore system of the zeolite with a foreign material, for example coke, removing part of the foreign material from the outer portion of the zeolite, for example by heating in a gas stream comprising oxygen, dealuminating the outer portion, and then removing the remainder of the foreign material. Use of such a partially dealuminated zeolite as catalyst in a toluene disproportionation reaction leads to greater selectivity to paraxylene.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: August 6, 1985
    Assignee: Imperial Chemical Industries, PLC
    Inventors: John Dewing, Philip J. Hogan, Allan Stewart