Patents by Inventor Craig HULET

Craig HULET 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: 8755947
    Abstract: In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to the decomposition (“decomp”) of the reaction mixture. Monitoring temperature excursions traveling through the reactor over close thermocouples (a roller) to detect changes in the mean temperature and the moving temperature front for a group of thermocouples detects conditions potentially leading to a decomp.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: June 17, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Craig Hulet, Joel Racle, Ian Woods, Benjamin Milton Shaw, Yves Lacombe
  • Publication number: 20130022498
    Abstract: In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to the decomposition (“decomp”) of the reaction mixture. Monitoring temperature excursions traveling through the reactor over close thermocouples (a roller) to detect changes in the mean temperature and the moving temperature front for a group of thermocouples detects conditions potentially leading to a decomp.
    Type: Application
    Filed: July 19, 2011
    Publication date: January 24, 2013
    Inventors: Craig Hulet, Joel Racle, Ian Woods, Benjamin Milton Shaw, Yves Lacombe
  • Publication number: 20080111008
    Abstract: A shrouded attrition nozzle for use in fluidized bed jet attrition. The nozzle comprises a shroud surrounding the nozzle and extending upwardly from the nozzle tip. The shroud is sized so as not to interfere with the periphery of the jet emitted from the nozzle and may be cylindrical or inverted frustoconical in shape. When a desired spacing is achieved between the periphery of the jet and the shroud, fluidizable material enters the interior of the shroud from the open end, moving countercurrently towards the nozzle tip. A disengagement of fluidization gas from fluidizable material occurs and an increased entrainment of solids in the jet leads to improvements in grinding efficiency. The result is a reduction in jet flowrate and fluidization gas wastage, which reduces overall energy requirements for attrition. A method of causing attrition of a fluidizable material using the shrouded nozzle is also disclosed.
    Type: Application
    Filed: November 10, 2006
    Publication date: May 15, 2008
    Inventor: Craig HULET