Patents by Inventor Helen Jayne Davies

Helen Jayne Davies 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).

  • Process for reducing the hydrogen sulphide content in non-gaseous sulphur compositions using a zinc-based scavenger
    Patent number: 11267705
    Abstract: A process for reducing the hydrogen sulphide content in a composition containing or consisting of hydrogen sulphide and non-gaseous elemental sulphur, comprising contacting the composition with a scavenger, wherein the scavenger is chosen from the group consisting of zinc oxide, zinc carbonate, zinc hydroxy carbonate or a combination of two or more of these.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 8, 2022
    Assignee: SHELL OIL COMPANY
    Inventors: Helen Jayne Davies, Dawid John D'Melo, Reginald Lambert
  • PROCESS FOR REDUCING THE HYDROGEN SULPHIDE CONTENT IN NON-GASEOUS SULPHUR COMPOSITIONS USING A ZINC-BASED SCAVENGER
    Publication number: 20210284533
    Abstract: A process for reducing the hydrogen sulphide content in a composition containing or consisting of hydrogen sulphide and non-gaseous elemental sulphur, comprising contacting the composition with a scavenger, wherein the scavenger is chosen from the group consisting of zinc oxide, zinc carbonate, zinc hydroxy carbonate or a combination of two or more of these.
    Type: Application
    Filed: July 20, 2017
    Publication date: September 16, 2021
    Inventors: Helen Jayne DAVIES, Dawid John D'MELO, Reginald LAMBERT
  • Method providing for a low release of HS during the preparation of sulfur-extended asphalt
    Patent number: 8361216
    Abstract: A method of making a sulfur-extended asphalt mixture with a minimum of hydrogen sulfide gas release into the atmosphere by using sulfur granules with specific physical properties and which are made by successively coating a starting sulfur seed particle with liquid sulfur that is solidified between coatings to thereby build up the a sulfur particle of a desired size. The sulfur granules are used to in the preparation of a sulfur, bitumen and aggregate mixture to provide the sulfur-extended asphalt.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 29, 2013
    Assignee: Shell Oil Company
    Inventors: Majid Jamshed Chughtai, Helen Jayne Davies, Richard Walter May, David Strickland
  • METHOD PROVIDING FOR A LOW RELEASE OF H2S DURING THE PREPARATION OF SULFUR-EXTENDED ASPHALT
    Publication number: 20110290151
    Abstract: A method of making a sulfur-extended asphalt mixture with a minimum of hydrogen sulfide gas release into the atmosphere by using sulfur granules with specific physical properties and which are made by successively coating a starting sulfur seed particle with liquid sulfur that is solidified between coatings to thereby build up the a sulfur particle of a desired size. The sulfur granules are used to in the preparation of a sulfur, bitumen and aggregate mixture to provide the sulfur-extended asphalt.
    Type: Application
    Filed: July 30, 2010
    Publication date: December 1, 2011
    Inventors: Majid Jamshed CHUGHTAI, Helen Jayne Davies, Richard Walter May, David Strickland