Patents by Inventor Charles R. H. JOHNSON

Charles R. H. JOHNSON 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).

  • Surface modification using abrasive blasting
    Patent number: 11458591
    Abstract: A method for the manufacture of a component comprises the following steps, in sequence using an additive layer manufacturing process to build a three-dimensional net shape of the component; performing a first abrasive blasting operation on a region of a surface of the component; and performing a second abrasive blasting operation on the region. The angle of incidence of the abrasive on the surface in the first abrasive blasting operation is less than the angle of incidence of the abrasive on the surface in the second abrasive blasting operation.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: October 4, 2022
    Inventors: Charles R H Johnson, Grant J. Gibson
  • SURFACE MODIFICATION USING ABRASIVE BLASTING
    Publication number: 20190054595
    Abstract: A method for the manufacture of a component comprises the following steps, in sequence using an additive layer manufacturing process to build a three-dimensional net shape of the component; performing a first abrasive blasting operation on a region of a surface of the component; and performing a second abrasive blasting operation on the region. The angle of incidence of the abrasive on the surface in the first abrasive blasting operation is less than the angle of incidence of the abrasive on the surface in the second abrasive blasting operation.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 21, 2019
    Inventors: Charles R H JOHNSON, Grant J. GIBSON
  • METHOD OF MANUFACTURE OF A COMPONENT
    Publication number: 20170282454
    Abstract: A method for the manufacture of a component having a defined geometry and dimensions is described. In sequence, the steps of the method involve; a) using an additive layer manufacturing process, budding a three-dimensional net shape of the component; b) applying a subtractive surface finishing operation to the product of step a); c) applying a heat treatment to the product of step b) whereby to provide a component to the defined geometry and dimensions.
    Type: Application
    Filed: March 9, 2017
    Publication date: October 5, 2017
    Applicant: ROLLS-ROYCE plc
    Inventors: Ian M. GARRY, Charles R. H. JOHNSON