Patents by Inventor Matthew Douglas Mumma

Matthew Douglas Mumma 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).

  • Diamond cutting elements for drill bits seeded with HCP crystalline material
    Patent number: 10711528
    Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: July 14, 2020
    Assignee: Ulterra Drilling Technologies, L.P.
    Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
  • DIAMOND CUTTING ELEMENTS FOR DRILL BITS SEEDED WITH HCP CRYSTALLINE MATERIAL
    Publication number: 20190145181
    Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 16, 2019
    Applicant: Ulterra Drilling Technologies, L.P.
    Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
  • Diamond cutting elements for drill bits seeded with HCP crystalline material
    Patent number: 10180032
    Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: January 15, 2019
    Assignee: Ulterra Drilling Technologies, L.P.
    Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
  • Selectively leached, polycrystalline structures for cutting elements of drill bits
    Patent number: 10160099
    Abstract: The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: December 25, 2018
    Assignee: Ulterra Drilling Technologies, L.P.
    Inventors: Matthew Douglas Mumma, Andrew David Murdock, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
  • Diamond Cutting Elements for Drill Bits Seeded With HCP Crystalline Material
    Publication number: 20140332286
    Abstract: A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 13, 2014
    Applicant: Ulterra Drilling Technologies, L.P.
    Inventors: Andrew David Murdock, Matthew Douglas Mumma, John Martin Clegg, William Henry DuBose, Neal Alan Bowden
  • Selectively Leached, Polycrystalline Structures for Cutting Elements of Drill Bits
    Publication number: 20140069726
    Abstract: The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 13, 2014
    Applicant: Ulterra Drilling Technologies, L.P.
    Inventors: Matthew Douglas Mumma, Andrew David Murdock, John Martin Clegg, William Henry DuBose, Neal Alan Bowden