Douglas D. Hall

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole tubular splitter assembly and method
- Patent number 7,066,267
- Issue date Jun 27, 2006
- Dril-Quip, Inc.
- Douglas D. Hall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill pipe protection rings and method of using the same
- Patent number 6,176,328
- Issue date Jan 23, 2001
- ABB Vetco Gray Inc.
- Miles F. Caraway
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotating drilling head with spaced apart seals
- Patent number 6,016,880
- Issue date Jan 25, 2000
- ABB Vetco Gray Inc.
- Douglas D. Hall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Remotely actuated cutting assembly for broken underwater guidelines
- Patent number 4,746,246
- Issue date May 24, 1988
- National-Oilwell
- William S. Cowan
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Remotely operated tool for performing functions under water
- Patent number 4,443,130
- Issue date Apr 17, 1984
- Armco Inc.
- Douglas D. Hall
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Underwater devices with remotely operated latch means
- Patent number 4,405,263
- Issue date Sep 20, 1983
- Armco Inc.
- Douglas D. Hall
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
BURNISHING ASSEMBLY SYSTEMS AND METHODS
- Publication number 20180154498
- Publication date Jun 7, 2018
- Onesubsea IP UK Limited
- David Harold THEISS
- B24 - GRINDING POLISHING
Information Patent Application
Downhole tubular splitter assembly and method
- Publication number 20050077048
- Publication date Apr 14, 2005
- Douglas D. Hall
- E21 - EARTH DRILLING MINING
Information Patent Application
Radial penetrator assembly and method
- Publication number 20050067167
- Publication date Mar 31, 2005
- Douglas D. Hall
- E21 - EARTH DRILLING MINING