Patent Assignment
Reel/Frame 022157/0305
Assignment of Assignor's Interest
Recorded: 2009-01-26
Pages: 6
Assignors
DAVIDSON ENERGY, INC.
Executed: 2009-01-14
DAVIDSON INSTRUMENTS, INC.
Executed: 2009-01-14
Assignee
HALLIBURTON ENERGY SERVICES, INC.
2601 E. BELTLINE RD., CARROLLTON, TEXAS, 75006
Covered Properties
(13)
Interferometric Signal Conditioner for Measurement of Absolute Static Displacements and Dynamic Displacements of a Fabry-Perot Interferometer
Method and Apparatus for Continuous Readout of Fabry-Perot Fiber Optic Sensor
Differential Pressure Transducer with Fabry-Perot Fiber Optic Displacement Sensor
A Fiber Optic Sensor System Having Circulators, Bragg Gratings and Couplers
Multi-Channel Array Processor
High Intensity Fabry-Perot Sensor
Application:
11/377,050 →
Publication:
US 2006/0274323
Tracking Algorithm for Linear Array Signal Processor for Fabry-Perot Cross-Correlation Pattern and Method of Using Same
Fiber Optic Mems Seismic Sensor with Mass Supported by Hinged Beams
Differential Pressure Transducer Configurations Including Displacement Sensor
Apparatus for continuous readout of fabry-perot fiber optic sensor
Application:
11/726,273 →
Publication:
US 2007/0252998
Fiber Optic Seismic Sensor Based on Mems Cantilever
Methods and Apparatus for Measuring Multiple Fabry-Perot Gaps
Transducer for Measuring Environmental Parameters
Related Assignments
(16)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 6, 2005
From: JEFFERS, LARRY A.; BERTHOLD, JOHN W.; LOPUSHANSKY, RICHARD L.; NEEDHAM, DAVID B.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 016095/0302 →
Assignment of Assignor's Interest
Jul 15, 2005
From: BERTHOLD, JOHN W.; LOPUSHANSKY, RICHARD L.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 016270/0905 →
Assignment of Assignor's Interest
Jul 15, 2005
From: BERTHOLD, JOHN W.; LOPUSHANSKY, RICHARD L.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 016270/0902 →
Assignment of Assignor's Interest
Mar 9, 2006
From: BERTHOLD, JOHN W.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 017282/0942 →
Assignment of Assignor's Interest
Jul 18, 2006
From: LOPUSHANSKY, RICHARD L.; JEFFERS, LARRY A.; BERTHOLD, JOHN W.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 017951/0325 →
Assignment of Assignor's Interest
Aug 17, 2006
From: GIBLER, WILLIAM N.; JEFFERS, LARRY A.; LOPUSHANSKY, RICHARD L.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 018125/0436 →
Assignment of Assignor's Interest
Nov 30, 2006
From: NEEDHAM, DAVID B.
To: DAVIDSON INSTRUMENTS, INC.
Reel/Frame 018568/0996 →
Assignment of Assignor's Interest
May 7, 2007
From: BERTHOLD, JOHN W; COCKING, SETH A; KAMINSKI, WINCENTY A; JEFFERS, LARRY A
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 019257/0699 →
Assignment of Assignor's Interest
Jun 4, 2007
From: LEITKO, TRAVIS; LOPUSHANSKY, RICHARD L; JEFFERS, LARRY A; BERTHOLD, JOHN W
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 019375/0818 →
Assignment of Assignor's Interest
Jul 2, 2007
From: BERTHOLD, JOHN W.; NEEDHAM, DAVID B.
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 019509/0269 →
Assignment of Assignor's Interest
Oct 22, 2007
From: NEEDHAM, DAVID B
To: DAVIDSON INSTRUMENTS INC.
Reel/Frame 019992/0711 →
Assignment of Assignor's Interest
Nov 12, 2007
From: DAVIDSON INSTRUMENTS INC.
To: DAVIDSON ENERGY INC.
Reel/Frame 020095/0589 →
Assignment of Assignor's Interest
May 7, 2008
From: LOPUSHANSKY, RICHARD L.
To: DAVIDSON ENERGY
Reel/Frame 020913/0811 →
Assignment of Assignor's Interest
Mar 5, 2009
From: BERTHOLD, JOHN W.
To: DAVIDSON INSTRUMENTS, INC.
Reel/Frame 022349/0474 →
Assignment of Assignor's Interest
Feb 15, 2011
From: ZHOU, TIANSHENG
To: PRECISELEY MICROTECHNOLOGY CORP.
Reel/Frame 025808/0530 →
Assignment of Assignor's Interest
Jun 25, 2019
From: HALLIBURTON ENERGY SERVICE, INC.
To: DAVIDSON INSTRUMENTS, INC.
Reel/Frame 049577/0382 →