Patents by Inventor Imants Deme

Imants Deme 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: 8025724
    Abstract: The invention provides a sulphur pellet comprising at least one H2S-suppressant, comprising in the range of from 60 to 100 wt % elemental sulphur, based on the total weight of the pellet. The invention further provides a process for the manufacture of sulphur pellets comprising at least one H2S-suppressant, comprising the steps of: (a) mixing elemental sulphur, one or more H2S-suppressants and optionally a filler in a mixing unit to obtain a mixture; (b) shaping and/or palletizing the mixture obtained in step (a) in a palletizing unit to obtain H2S-suppressant-comprising sulphur pellets. The invention further provides a process for the manufacture of a sulphur-comprising asphalt paving mixture comprising the steps of: (i) preheating bitumen at a temperature of between 140 and 180° C.; (ii) preheating aggregate at a temperature of between 140 and 180° C.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: September 27, 2011
    Assignee: Shell Oil Company
    Inventor: Imants Deme
  • Publication number: 20100288165
    Abstract: A process for manufacturing an asphalt paving mixture is disclosed. The process comprises the steps of: (i) heating bitumen at a temperature of from 100 to 200° C.; (ii) heating aggregate at a temperature of from 100 to 200° C.; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit. From 10 to 200 wt % of sulphur pellets, based upon the weight of the bitumen, are added in at least one of the steps (i), (ii) or (iii). The sulphur pellets comprise from 1 to 50 wt % of a monovinyl aromatic compound, based upon the weight of the sulphur pellets.
    Type: Application
    Filed: October 18, 2007
    Publication date: November 18, 2010
    Inventor: Imants Deme
  • Publication number: 20070125268
    Abstract: The invention provides a sulphur pellet comprising at least one H2S-suppressant, comprising in the range of from 60 to 100 wt % elemental sulphur, based on the total weight of the pellet. The invention further provides a process for the manufacture of sulphur pellets comprising at least one H2S-suppressant, comprising the steps of: (a) mixing elemental sulphur, one or more H2S-suppressants and optionally a filler in a mixing unit to obtain a mixture; (b) shaping and/or pelletising the mixture obtained in step (a) in a pelletising unit to obtain H2S-suppressant-comprising sulphur pellets. The invention further provides a process for the manufacture of a sulphur-comprising asphalt paving mixture comprising the steps of: (i) preheating bitumen at a temperature of between 140 and 180° C.; (ii) preheating aggregate at a temperature of between 140 and 180° C.
    Type: Application
    Filed: December 8, 2004
    Publication date: June 7, 2007
    Inventor: Imants Deme