Patents by Inventor Richard Walter May

Richard Walter May 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).

  • BITUMINOUS COMPOSITION
    Publication number: 20140147205
    Abstract: The invention provides a bituminous composition comprising 20 to 80 wt % bitumen, 0.1 to 7 wt % of a copolymer formed from monomers including ethylene and glycidyl methacrylate or glycidyl acrylate, and 20 to 60 wt % sulphur, all weight percentages based on the weight of the bituminous composition. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Application
    Filed: April 5, 2012
    Publication date: May 29, 2014
    Inventors: David Strickland, Majid Jamshed Chughtai, Richard Walter May
  • 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