Patents by Inventor James S. Dahlem

James S. Dahlem 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).

  • Roller cone drill bits with enhanced cutting elements and cutting structures
    Patent number: 7497281
    Abstract: Roller cone drill bits are provided with cutting elements and cutting structures optimized for efficient drilling of soft and medium formations interspersed with hard stringers. The cutting elements and cutting structures may be satisfactorily used to drill downhole formations with varying amounts of hardness. The cutting elements and cutting structures may also be optimized to reduce tracking and increase wear resistance.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: March 3, 2009
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shilin Chen, James S. Dahlem
  • Roller cone drill bits with enhanced cutting elements and cutting structures
    Patent number: 7334652
    Abstract: Roller cone drill bits are provided with cutting elements and cutting structures optimized for efficient drilling of soft and medium formations interspersed with hard stringers. The cutting elements and cutting structures may be satisfactorily used to drill downhole formations with varying amounts of hardness. The cutting elements and cutting structures may also be optimized to reduce tracking and increase wear resistance.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: February 26, 2008
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shilin Chen, James S. Dahlem
  • Drill bit packages and methods
    Patent number: 6536192
    Abstract: A plastic canister for storing and shipping drill bits, especially roller cone drill bit, has a pin-holder built into the lid of the canister for ease of field dressing the bit. The lid and body of the container are slip fit to one another and indexed to each other for positive positioning in their relationship. Safety features include the use of a conductive plastic polymer, a non-rolling base, mating protrusions and recesses for stacking, recessed areas for strapping, and welded loop handles.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: March 25, 2003
    Assignees: Halliburton Energy Services, Inc., Relocation Systems, Inc.
    Inventors: William W. King, William C. Saxman, Jeffery Peck, James S. Dahlem, Karl D. Knecht, Lee M. Smith, Margaret L. Parks, Mike Jeziorski, Patsy A. Jenner
  • Drill bit packages and methods
    Publication number: 20020014425
    Abstract: A plastic canister for storing and shipping drill bits, especially roller cone drill bit, has a pin-holder built into the lid of the canister for ease of field dressing the bit. The lid and body of the container are slip fit to one another and indexed to each other for positive positioning in their relationship. Safety features include the use of a conductive plastic polymer, a non-rolling base, mating protrusions and recesses for stacking, recessed areas for strapping, and welded loop handles.
    Type: Application
    Filed: April 27, 2001
    Publication date: February 7, 2002
    Inventors: William W. King, William C. Saxman, Jeffery Peck, James S. Dahlem, Karl D. Knecht, Lee M. Smith, Margaret L. Parks, Mike Jeziorski, Patsy A. Jenner