Patent Assignment
Reel/Frame 004123/0711
Assignment of a Part of Assignors Interest
Recorded: 1983-04-25
Pages: 4
Assignor
CEBTRILIFT-HUGHES INC.
Executed: 1982-12-30
Assignee
HUGHES TOOL COMPANY
P.O. BOX 2539, A CORP. OF DE, HOUSTON, TEXAS, 77001
Covered Properties
(25)
Pressure and Heat Sensing Means for Submersible Motor
Patent:
3,284,669 →
Application:
04/240,552 →
System with Electrical Utilization Device Having Main Energization Con Ductors Over Which Information Signals Are Also Transferred
Patent:
3,340,500 →
Application:
04/402,391 →
System for Remotely Indicating Selectably Two Phenomena
Patent:
3,587,076 →
Application:
04/727,854 →
Submersible Pump Drive System
Patent:
3,751,192 →
Application:
05/132,942 →
Electrical Cable
Patent:
3,710,007 →
Application:
05/208,624 →
Electrical Cable
Patent:
3,710,009 →
Application:
05/208,643 →
Oil Resistant Blends for Electrical Insulation
Patent:
3,926,900 →
Application:
05/424,262 →
Overload Protection System for Three-Phase Submersible Pump Motor
Patent:
4,000,446 →
Application:
05/583,717 →
Tamdem Thrust Bearing
Patent:
4,033,647 →
Application:
05/663,650 →
Pump Modification for Matching Performance
Patent:
4,219,917 →
Application:
05/698,231 →
Insulated and Braid Covered Electrical Conductor for Use in Gassy Oil Wells
Patent:
4,096,351 →
Application:
05/717,437 →
Separator
Patent:
4,088,459 →
Application:
05/752,499 →
Gas-Liquid Separator
Patent:
4,330,306 →
Application:
05/843,019 →
Cable Splice
Patent:
4,234,758 →
Application:
05/957,383 →
Splice for Lead-Sheathed Cable
Patent:
4,273,953 →
Application:
06/004,256 →
Cable
Patent:
4,284,841 →
Application:
06/073,414 →
Energizing Circuit for Providing Low Voltage Starting for Submersible Pump Motor
Patent:
4,330,740 →
Application:
06/079,852 →
Tandem Thrust Bearing
Patent:
4,275,938 →
Application:
06/096,344 →
Electronic Cooling
Patent:
4,302,793 →
Application:
06/099,016 →
Submersible Pump Seal Section with Multiple Bellows
Patent:
4,421,999 →
Application:
06/239,767 →
Below Motor Pressure Compensation System for Submersible Pump
Patent:
4,436,488 →
Application:
06/267,224 →
Self-Aligning Mechanical Face Seal
Patent:
4,406,462 →
Application:
06/301,162 →
Backspin Detection Circuit for a Submersible Pump
Patent:
4,410,845 →
Application:
06/307,558 →
Feed Through Mandrel for Submersible Pump
Patent:
4,426,124 →
Application:
06/308,057 →
Motor Variable Frequency Drive
Application:
06/313,043 →
Related Assignments
(12)
Other recorded transfers of the patents in this record — the chain of ownership.
Change of Name
Nov 10, 1980
From: CENTRILIFT, INC.
To: CENTRILIFT-HUGHES, INC.
Reel/Frame 003805/0843 →
Assignment of Assignors Interest.
Mar 2, 1981
From: BEAVERS JOHN A.; WITTEN RAYMOND L.
To: CENTRILIFT-HUGHES, INC., A CORP. OF DE
Reel/Frame 003858/0161 →
Assignment of Assignors Interest.
May 26, 1981
From: WITTEN RAYMOND L.
To: CENTRILIFT-HUGHES, INC., A CORP. OF DE.
Reel/Frame 003872/0010 →
Conditional Assignment
Jul 14, 1981
From: BORG-WARNER CORPORATION, A DE CORP.
To: CENTRILIFT-HUGHES, INC., A CORP. OF DE
Reel/Frame 003883/0580 →
Assignment of Assignors Interest.
Sep 11, 1981
From: WITTEN, RAYMOND L.
To: CENTRILIFT-HUGHES, INC.
Reel/Frame 003921/0192 →
Assignment of Assignors Interest.
Oct 1, 1981
From: LOCKYEAR, KEVIN W.
To: CENTRILIFT-HUGHES, INC., A CORP. OF DE.
Reel/Frame 003928/0431 →
Assignment of Assignors Interest.
Oct 2, 1981
From: VANDEVIER, JOSEPH E.
To: CENTRILIFT-HUGHES, INC., A CORP. OF DE.
Reel/Frame 003937/0007 →
Assignment of Assignors Interest.
Oct 19, 1981
From: KNOX, DICK L.; LEUTHEN, JOHN M.; LOCKYEAR, KEVIN W.
To: CENTRILIFT-HUGHES INC.
Reel/Frame 003951/0516 →
Assignment of Assignors Interest.
Oct 26, 1981
From: GROVER, JAMES R.
To: CENTRILIFT-HUGHES, INCORPORATED
Reel/Frame 003921/0945 →
Merger
Jun 21, 1982
From: SUBMERGIBLE OIL SYSTEMS, INC.
To: CENTRILIGT-HUGHES, INC., A CORP. OF DE
Reel/Frame 004002/0353 →
Assignment of Assignors Interest.
Aug 8, 1988
From: HUGHES TOOL COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 005050/0861 →
Merger and Change of Name Effective on December 31, 1989, in Pennsylvania
Sep 17, 1990
From: ATOCHEM INC., A DE CORP. (MERGED INTO); M&T CHEMICALS INC., A DE CORP. (MERGED INTO); PENNWALT CORPORATION, A PA CORP. (CHANGED TO)
To: ATOCHEM NORTH AMERICA, INC., A PA CORP.
Reel/Frame 005496/0003 →