DM

Duncan Charles MacDonald

Shell Oil Compny: 18 patents #130 of 4,423Top 3%
CL Cmte Development Limited: 1 patents #5 of 31Top 20%
📍 Houston, TX: #1,061 of 21,073 inventorsTop 6%
🗺 Texas: #7,287 of 125,132 inventorsTop 6%
Overall (All Time): #238,206 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
10415365 Methods and systems for drilling David Alston Edbury, Jose Victor Guerrero, James Bryon Rogers, Donald Ray Sitton, Jason Norman 2019-09-17
9879490 Methods and systems for drilling David Alston Edbury, Jose Victor Guerrero, James Bryon Rogers, Donald Ray Sitton, Jason Norman 2018-01-30
9683418 Methods and systems for picking up a drill bit David Alston Edbury, Jose Victor Guerrero, James Bryon Rogers, Donald Ray Sitton 2017-06-20
9528322 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations 2016-12-27
9470052 Methods and systems for drilling David Alston Edbury, Jose Victor Guerrero, James Bryon Rogers, Donald Ray Sitton, Jason Norman 2016-10-18
9129728 Systems and methods of forming subsurface wellbores David Alston Edbury 2015-09-08
8939233 Methods and systems for drilling David Alston Edbury, Jose Victor Guerrero, James Bryon Rogers, Donald Ray Sitton 2015-01-27
8752904 Heated fluid flow in mines and tunnels used in heating subsurface hydrocarbon containing formations David Booth Burns, Horng Jye (Jay) Hwang, Jochen Marwede, Robert George Prince-Wright 2014-06-17
8739874 Methods for heating with slots in hydrocarbon formations Ernesto Rafael Fonseca Ocampos, John Michael Karanikas, Ernest E. Carter, Jr. 2014-06-03
8636323 Mines and tunnels for use in treating subsurface hydrocarbon containing formations Robert George Prince-Wright, Jochen Marwede, Horng Jye (Jay) Hwang, David Booth Burns 2014-01-28
8562078 Hydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations David Booth Burns, Horng Jye (Jay) Hwang, Jochen Marwede, Robert George Prince-Wright 2013-10-22
8561720 Methods and systems for drilling David Alston Edbury, Jose Victor Guerrero, James Bryon Rogers, Donald Ray Sitton 2013-10-22
8327681 Wellbore manufacturing processes for in situ heat treatment processes Ian Alexander Davidson, Cameron James Geddes, Randall Lynn Rudolf, Bruce Allen Selby 2012-12-11
8177305 Heater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations David Booth Burns, Horng Jye (Jay) Hwang, Jochen Marwede, Robert George Prince-Wright 2012-05-15
8172335 Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations David Booth Burns, Horng Jye (Jay) Hwang, Jochen Marwede, Robert George Prince-Wright 2012-05-08
8162405 Using tunnels for treating subsurface hydrocarbon containing formations David Booth Burns, Horng Jye (Jay) Hwang, Jochen Marwede, Robert George Prince-Wright 2012-04-24
8151907 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations 2012-04-10
8011451 Ranging methods for developing wellbores in subsurface formations 2011-09-06
7753141 Coiled tubing drilling system Timothy Gregory Hamilton Meyer 2010-07-13