Patents by Inventor Leon Willis

Leon Willis 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).

  • STRAP ASSEMBLY, STRAP CONNECTOR, HEADGEAR, HEADGEAR ASSEMBLY, METHOD OF FORMING HEADGEAR, TUBULAR CONNECTOR, PATIENT INTERFACE AND METHOD OF JOINING STRAPS
    Publication number: 20240139456
    Abstract: FIGS. 1-16D & 66A-92D disclose a large variety of methods of forming the headgear for use in combination with a breathing apparatus including a unitary plastic core within textile casings. In some configurations, the plastic core material penetrates or bursts-through the textile casing of the straps. Some configurations include over moulding, alignment posts, T-joints and joint housings with injection aperture. FIGS. 17-65 & 93A-94C disclose a large variety of different headgear arrangements including top strap, front strap, rear strap and pairs of straps extending from the mask above and below the ear to meet behind the ear. FIGS. 95-121B disclose a large variety of connectors connecting the headgear assembly to the mask assembly where the headgear, mask and connector form a closed loop when the connector is disengaged with the mask assembly.
    Type: Application
    Filed: November 14, 2023
    Publication date: May 2, 2024
    Inventors: Paul Mathew Freestone, Janine Elizabeth Collins, Ryan Anthony Graham, Vitaly Kapelevich, Melissa Catherine Bornholdt, Sophie Kathryn Randles, Silas Sao Jin Siew, Steve Thomas, Ronan Leahy, Max Leon Betteridge, Callum Ross Gordon, Vicky Dan Gao, Cameron Robert Willis
  • Process and chemistry for reducing dolomite concentrations in phosphate processing
    Patent number: 10913810
    Abstract: A magnesium suppressant/flocculant for use in separating dolomite from calcium phosphate. The magnesium suppressant/flocculant may be applied at a mine site prior to subjecting ore fractions to phosphate flotation or at a chemical plant after grinding.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: February 9, 2021
    Assignee: ARR-MAZ PRODUCTS, L.P.
    Inventors: Lucas R. Moore, Todd Parker, Leon Willis
  • Process and chemistry for reducing dolomite concentrations in phosphate processing
    Patent number: 10556978
    Abstract: A magnesium suppressant/flocculant for use in separating dolomite from calcium phosphate. The magnesium suppressant/flocculant may be applied at a mine site prior to subjecting ore fractions to phosphate flotation or at a chemical plant after grinding.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: February 11, 2020
    Assignee: Arr-Maz Products, L.P.
    Inventors: Lucas R. Moore, Todd Parker, Leon Willis
  • PROCESS AND CHEMISTRY FOR REDUCING DOLOMITE CONCENTRATIONS IN PHOSPHATE PROCESSING
    Publication number: 20160038948
    Abstract: A magnesium suppressant/flocculant for use in separating dolomite from calcium phosphate. The magnesium suppressant/flocculant may be applied at a mine site prior to subjecting ore fractions to phosphate flotation or at a chemical plant after grinding.
    Type: Application
    Filed: July 27, 2015
    Publication date: February 11, 2016
    Applicant: ARR-MAZ PRODUCTS, L.P.
    Inventors: Lucas R. Moore, Todd Parker, Leon Willis