Patent Assignment
Reel/Frame 033577/0746
Assignment of Assignor's Interest
Recorded: 2014-08-20
Pages: 20
Assignor
WWT INTERNATIONAL, INC
Executed: 2014-07-15
Assignee
WWT NORTH AMERICA HOLDINGS, INC.
9758 WHITHORN DRIVE, HOUSTON, TEXAS, 77095
Covered Properties
(53)
Puller-Thruster Downhole Tool
Patent:
6,003,606 →
Application:
08/694,910 →
Method of Moving a Puller Thruster Downhole Tool
Patent:
6,230,813 →
Application:
09/213,717 →
Puller-Thruster Downhole Tool
Patent:
6,286,592 →
Application:
09/213,952 →
Electrically Sequenced Tractor
Patent:
6,347,674 →
Application:
09/453,996 →
Electro-Hydraulically Controlled Tractor
Patent:
6,241,031 →
Application:
09/466,550 →
Sensor assembly
Patent:
6,367,366 →
Application:
09/599,071 →
Gripper Assembly for Downhole Tractors
Electro-Hydraulically Controlled Tractor
Electrically Sequenced Tractor
Puller-Thruster Downhole Tool
Patent:
6,601,652 →
Application:
09/919,669 →
Gripper Assembly for Downhole Tractors
Tractor with Improved Valve System
Gripper Assembly for Downhole Tools
Electrically Sequenced Tractor
Puller-Thruster Downhole Tool
Gripper Assembly for Downhole Tools
Tractor with Improved Valve System
Tractor with Improved Valve System
Puller-Thruster Downhole Tool
Electrically Sequenced Tractor
Roller Link Toggle Gripper and Downhole Tractor
Electrically Sequenced Tractor
Puller-Thruster Downhole Tool
Electrically Sequenced Tractor
Electrically Sequenced Tractor
Tractor with Improved Valve System
Gripper Assembly for Downhole Tools
Gripper Assembly for Downhole Tools
Puller-Thruster Downhole Tool
Tractor with Improved Valve System
Expandable Ramp Gripper
Tractor with Improved Valve System
Griper Assembly for Downhole Tools
Variable Linkage Assisted Gripper
Tractor with Improved Valve System
Tractor with Improved Valve System
Electrically Powered Tractor
Roller Link Toggle Gripper and Downhole Tractor
Expandable Ramp Gripper
Gripper Assembly for Downhole Tools
Roller Link Toggle Gripper and Downhole Tractor
Tractor with Improved Valve System
Variable Linkage Assisted Gripper
Electrically Powered Tractor
Methods and Apparatuses for Inhibiting Rotational Misalignment of Assemblies in Expandable Well Tools
Expandable Ramp Gripper
Gripper Assembly for Downhole Tools
High Expansion or Dual Link Gripper
Gripper Assembly for Downhole Tools
Eccentric Linkage Gripper
Eccentric Linkage Gripper
Application:
61/932,192 →
Eccentric Linkage Gripper
Application:
61/933,755 →
Eccentric Linkage Gripper
Application:
61/954,372 →
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Corrective Assignment to Add Inventor Erroneously Omitted, Previously Recorded at Reel 011716, Frame 0211.
Oct 9, 2001
From: BLOOM, DUANE; ESTEP, JAMES W.; KRUEGER, RUDOLPH ERNST V; MOORE, NORMAN BRUCE
To: WESTERN WELL TOOL, INC.
Reel/Frame 012320/0341 →
Assignment of Assignor's Interest
May 18, 2004
From: MOCK, PHILIP W.; KRUEGER V, RUDOLPH ERNST; BLOOM, DUANE; MOORE, N. BRUCE
To: WESTERN WELL TOOL, INC.
Reel/Frame 015339/0690 →
Change of Name
Nov 12, 2010
From: WESTERN WELL TOOL, INC.
To: WWT, INC.
Reel/Frame 025303/0681 →
Change of Name
Nov 12, 2010
From: WWT, INC.
To: WWT INTERNATIONAL, INC.
Reel/Frame 025304/0785 →
Corrective Assignment to Correct the Filing Date from 12/22/1999 to 12/17/1999 and the Serial Number from 09/446,550 to 09/466,550 Previously Recorded on Reel 010706 Frame 0614. Assignor(S) Hereby Confirms the Correct Filing Date and Serial Number.
Apr 11, 2013
From: BEAUFORT, RONALD E.; MOORE, NORMAN BRUCE; BLOOM, DUANE
To: WESTERN WELL TOOL, INC.
Reel/Frame 030260/0100 →