Varco Shaffer, Inc.

Organization

Houston, TX, US

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Subsea coiled tubing injector with pressure compensation
- Patent number 7,380,589
- Issue date Jun 3, 2008
- Varco Shaffer, Inc.
- David Wayne Martin
- E21 - EARTH DRILLING MINING
Information Patent Grant
BOP assembly with metal inserts
- Patent number 6,857,634
- Issue date Feb 22, 2005
- Varco Shaffer, Inc.
- Raul Araujo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Shear ram assembly
- Patent number 6,719,042
- Issue date Apr 13, 2004
- Varco Shaffer, Inc.
- Christopher D. Johnson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well drilling method and system
- Patent number 6,374,925
- Issue date Apr 23, 2002
- Varco Shaffer, Inc.
- Hubert L. Elkins
- E21 - EARTH DRILLING MINING
Information Patent Grant
Blowout preventer ram actuating mechanism
- Patent number 6,244,560
- Issue date Jun 12, 2001
- Varco Shaffer, Inc.
- Chris Dale Johnson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsea hydraulic control system
- Patent number 6,192,680
- Issue date Feb 27, 2001
- Varco Shaffer, Inc.
- James D. Brugman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Door connectors
- Patent number 5,975,484
- Issue date Nov 2, 1999
- Varco Shaffer, Inc.
- James D. Brugman
- E21 - EARTH DRILLING MINING
Information Patent Grant
BOP with improved door connectors
- Patent number 5,897,094
- Issue date Apr 27, 1999
- Varco Shaffer, Inc.
- James D. Brugman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pilot valve with improved cage
- Patent number 5,778,918
- Issue date Jul 14, 1998
- Varco Shaffer, Inc.
- Mark W. McLelland
- E21 - EARTH DRILLING MINING
Information Patent Grant
BOP with partially equalized ram shafts
- Patent number 5,735,502
- Issue date Apr 7, 1998
- Varco Shaffer, Inc.
- Bryce A. Levett
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotating blowout preventer and method
- Patent number 5,662,171
- Issue date Sep 2, 1997
- Varco Shaffer, Inc.
- James D. Brugman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotating blowout preventer and method
- Patent number 5,588,491
- Issue date Dec 31, 1996
- Varco Shaffer, Inc.
- James D. Brugman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Blowout preventer with ram wedge locks
- Patent number 5,575,452
- Issue date Nov 19, 1996
- Varco Shaffer, Inc.
- Melvyn F. Whitby
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulically controlled blowout preventer
- Patent number 5,505,426
- Issue date Apr 9, 1996
- Varco Shaffer, Inc.
- Melvyn F. Whitby
- E21 - EARTH DRILLING MINING
Information Patent Grant
Oilfield tubular shear ram and method for blowout prevention
- Patent number 5,400,857
- Issue date Mar 28, 1995
- Varco Shaffer, Inc.
- Melvyn F. Whitby
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
75635524 - ARC
- Serial number 75635524
- Registration number 2387159
- Filing date Feb 4, 1999
- Varco Shaffer, Inc.
- 7 - Machines and machine tools
Information Trademark
75324548 - NXT
- Serial number 75324548
- Registration number 2202714
- Filing date Jul 15, 1997
- Varco Shaffer, Inc.
- 7 - Machines and machine tools
Information Trademark
75110573 - DT-2
- Serial number 75110573
- Registration number 2061240
- Filing date May 28, 1996
- Varco Shaffer, Inc.
- 6 - Common metals and their alloys
Information Trademark
75021497 - PCWD
- Serial number 75021497
- Registration number 2008565
- Filing date Nov 17, 1995
- Varco Shaffer, Inc.
- 7 - Machines and machine tools
Information Trademark
74614691 - V
- Serial number 74614691
- Filing date Dec 23, 1994
- Varco Shaffer, Inc.
- 7 - Machines and machine tools
Information Trademark
74511791 - CHASOVOY
- Serial number 74511791
- Registration number 1930833
- Filing date Apr 13, 1994
- Varco Shaffer, Inc.
- 7 - Machines and machine tools
Information Trademark
74312778 - ULTRATEMP
- Serial number 74312778
- Registration number 1811854
- Filing date Sep 11, 1992
- Varco Shaffer, Inc.
- 7 - Machines and machine tools

Varco Shaffer, Inc.

Organization

Patents Grantslast 30 patents

Subsea coiled tubing injector with pressure compensation

BOP assembly with metal inserts

Shear ram assembly

Well drilling method and system

Blowout preventer ram actuating mechanism

Subsea hydraulic control system

Door connectors

BOP with improved door connectors

Pilot valve with improved cage

BOP with partially equalized ram shafts

Rotating blowout preventer and method

Rotating blowout preventer and method

Blowout preventer with ram wedge locks

Hydraulically controlled blowout preventer

Oilfield tubular shear ram and method for blowout prevention

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

75635524 - ARC

75324548 - NXT

75110573 - DT-2

75021497 - PCWD

74614691 - V

74511791 - CHASOVOY

74312778 - ULTRATEMP