Patents by Inventor Geoffrey Chapman

Geoffrey Chapman 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).

  • Publication number: 20090097780
    Abstract: This is the Garden Debris Collection Device. It allows one person to fill a large plastic bag, unassisted, even in windy conditions. It consists of a large cylinder or other suitable shape into which a bag with a larger diameter than the cylinder is inserted and fastened about the rim. The bag inside the cylinder is filled with debris. The cylinder and bag are then lifted allowing the debris to settle. The now empty cylinder sits on the bag's bottom which has been expanded by the debris. Repeat until the bag is full. The Garden Debris Collection Device is fundamentally different from other bag filling devices. The collection bag itself controls the volume of material contained, not a device inserted into the bag, nor a device surrounding the bag. Garden Debris Collection Device controls the bag and allows it to be filled and ready to secure by conventional means.
    Type: Application
    Filed: June 9, 2008
    Publication date: April 16, 2009
    Inventors: Geoffrey A. Chapman, Cathy Eileen Chapman
  • Patent number: 5789501
    Abstract: The present invention relates to a process for continuously manufacturing ethylene (co-)polymer in a gaseous phase in a polymerization zone through which passes an essentially gaseous reaction mixture comprising the (co-)monomers(s). In addition the process comprises transferring a mixture (A) formed by the gaseous reaction mixture and the solid (co-)polymer in a depressurization zone, and separating the mixture (A) into a solid phase (B) and a gaseous phase (C) returned into the polymerization zone. The solid phase (B) is subjected to (1) at least one non-deactivating flushing with respect to the active catalytic residues, and subsequently (2) a deactivating flushing with a gaseous mixture of nitrogen, water and oxygen. The (co-)polymer thus obtained has very low contents of unreacted (co-)monomer(s) and volatile organic compounds, and exhibits a high whiteness index and a long thermal stability with time.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: August 4, 1998
    Assignee: BP Chemicals Limited
    Inventors: Geoffrey Chapman, Stephen Kevin Lee, Michael Bernard Power, Bruno Grenouiller