Houston, Texas
United States
21
2021-11-04
The entities that hold a legal rights for patent applications filed by inventor Nelson John E.:
John E. Nelson from Houston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Non-orientating tubing hanger and tree
#2 | 2021-01-07Inner drilling riser tie-back internal connector
#3 | 2018-08-16Vertical ratcheting anti-rotation device
#4 | 2018-08-16Radial ratchet dog anti-rotation device
#5 | 2018-08-16Set Screw Anti-Rotation Device with Knurl Surface
#6 | 2017-06-22Method and apparatus for bit run and retrieved casing hanger locking device
#7 | 2016-08-25Metal to metal annulus seal with enhanced lock-down capacity
#8 | 2014-06-19Anti-rotation wedge
#9 | 2013-12-26METAL TO METAL PACKOFF FOR USE IN A WELLHEAD ASSEMBLY
#10 | 2012-09-13Metal annulus seal
#11 | 2011-08-11Riser joint coupling
#12 | 2010-12-02Metal-to-metal seal with travel seal bands
#13 | 2010-11-04Metal annulus seal
#14 | 2010-06-17Wellhead seal assembly
#15 | 2010-05-27Bi-directional annulus seal
#16 | 2010-05-13Metal annulus seal
#17 | 2008-06-26Preloaded riser coupling system
#18 | 2007-03-01Preloaded riser coupling system
#19 | 2007-03-01Riser joint coupling
#20 | 2006-08-31Metal-to-metal seal for bridging hanger or tieback connection
#21 | 2005-05-24Rotating drilling head gripper
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