Patents by Inventor John Paul Duffield

John Paul Duffield 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: 20160158397
    Abstract: An assembly for evaporating a volatile material is described, the assembly comprising a device and a refill which are detachable from one another: wherein the device comprises a magnetic induction coil configured to operate with an alternating current passed therethrough at a frequency of between substantially 20 KHz to substantially 500 KHz and one or more volatile fluid emanation channels containing at least one piece of heat-conducting, non-magnetic metal foil and/or deposited heat-conducting, non-magnetic metal; and wherein the refill comprises at least one magnetic susceptor having a coercivity of substantially 50 ampere/metre (Hc) to substantially 1500 ampere/metre (Hc) and a substantially liquid-tight sealed reservoir containing the volatile material; wherein, in use, the magnetic susceptor(s) is arranged to heat the material predominately by magnetic hysteresis when the magnetic susceptor(s) is at least partially positioned in the induced magnetic field generated, in use, when said alternating current
    Type: Application
    Filed: August 7, 2014
    Publication date: June 9, 2016
    Inventor: John Paul DUFFIELD
  • Publication number: 20160151528
    Abstract: An assembly for evaporating a volatile fluid is described, the assembly comprising a device and a refill which are detachable from one another: wherein the device comprises a magnetic induction coil configured to operate with an alternating current passed therethrough at a frequency of between substantially 20 KHz to substantially 500 KHz and a volatile fluid transport means receiving area containing at least one piece of heat-conducting, non-magnetic metal foil and/or deposited heat-conducting, non-magnetic metal; and wherein the refill comprises a reservoir for the volatile fluid, a volatile fluid transport means to draw the fluid from the reservoir, and at least one magnetic susceptor having a coercivity of substantially 50 ampere/metre (HC) to substantially 1500 ampere/metre (HC).
    Type: Application
    Filed: August 7, 2014
    Publication date: June 2, 2016
    Applicant: Reckitt Benckiser (Brands) Limited
    Inventor: John Paul DUFFIELD
  • Patent number: 7578114
    Abstract: A process for preparing a water-soluble container comprising at least two compartments which comprises: a. providing at least two compartments, each compartment being filled with a composition, and covering each compartment with a lid such that the compartments are joined by a folding portion; and b. folding the folding portion such that the lids of each of the compartments adhere to each other.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: August 25, 2009
    Assignee: Reckitt Benckiser (UK) Limited
    Inventors: John Paul Duffield, Marcus Guzmann
  • Patent number: 7424797
    Abstract: A process for preparing a water-soluble container having a thermoformed pocket and a lid, wherein a water soluble laminated film containing the pocket is produced comprising at least one extruded polyvinyl film laminated to at least one solution cast polyvinyl alcohol film, a composition such as fabric care, surface care, dishwashing, water-softening, laundry, detergent or a rinse-aid composition is filled into the pocket, and the filled pocket is sealed with a lid comprising a solution cast polyvinyl alcohol film on a surface facing the pocket to form a sealed water-soluble container containing a composition.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: September 16, 2008
    Assignee: Reckitt Benckiser (UK) Limited
    Inventor: John Paul Duffield
  • Publication number: 20040172917
    Abstract: A process for preparing a water-soluble article comprising a water-soluble primary thermoformed component and a water-soluble secondary component attached thereto, which comprises placing the secondary component in the cavity of a thermoforming mould, thereafter placing a primary component in or over the thermoforming mould, forming the primary thermoformed component by thermoforming the primary component in the mould, and removing the article from the mould.
    Type: Application
    Filed: April 21, 2004
    Publication date: September 9, 2004
    Inventor: John Paul Duffield