Patents by Inventor Duane C. Dunnahoe

Duane C. Dunnahoe 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).

  • Method and apparatus for seam dressing
    Patent number: 11376641
    Abstract: A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: July 5, 2022
    Inventor: Duane C. Dunnahoe
  • Method and Apparatus for Seam Dressing
    Publication number: 20200171554
    Abstract: A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 4, 2020
    Inventor: Duane C. Dunnahoe
  • Method and apparatus for seam dressing
    Patent number: 10556296
    Abstract: A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 11, 2020
    Inventor: Duane C. Dunnahoe
  • Method and Apparatus for Seam Dressing
    Publication number: 20180147672
    Abstract: A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 31, 2018
    Inventor: Duane C. Dunnahoe
  • Carbide chip
    Patent number: D649987
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: December 6, 2011
    Inventor: Duane C. Dunnahoe
  • Mill
    Patent number: D656167
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: March 20, 2012
    Inventor: Duane C. Dunnahoe
  • Multi-sided cutting chip
    Patent number: D712444
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: September 2, 2014
    Inventor: Duane C. Dunnahoe
  • Hexagonal chip with elongated side notches
    Patent number: D718356
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: November 25, 2014
    Inventor: Duane C. Dunnahoe
  • Milling tool
    Patent number: D750674
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: March 1, 2016
    Inventor: Duane C. Dunnahoe