Assignee
HOUSTON ENGINEERS INC
US·10 granted patents·354 citations·filing 1975–1997
Top patents by PatentIndex Score
10 records- 0185US3955621ARiser assemblyHOUSTON ENGINEERS INC·Filed 1975·Granted May 11, 1976·60 cites·8 claims
- 0272US5288271AConstant velocity universal joint assembly for downhole motorHOUSTON ENGINEERS INC·Filed 1992·Granted Feb 22, 1994·60 cites·6 claims
- 0367US5765638ATool for use in retrieving an essentially cylindrical object from a well boreHOUSTON ENGINEERS INC·Filed 1996·Granted Jun 16, 1998·52 cites·5 claims
- 0454US5595244AHydraulic jarHOUSTON ENGINEERS INC·Filed 1995·Granted Jan 21, 1997·37 cites·1 claims
- 0554US5174393AHydraulic jarHOUSTON ENGINEERS INC·Filed 1991·Granted Dec 29, 1992·35 cites·11 claims
- 0654US4023847AOvershot toolHOUSTON ENGINEERS INC·Filed 1975·Granted May 17, 1977·18 cites·7 claims
- 0747US5425430AJar enhancerHOUSTON ENGINEERS INC·Filed 1994·Granted Jun 20, 1995·22 cites·8 claims
- 0845US5918689AJar enhancerHOUSTON ENGINEERS INC·Filed 1997·Granted Jul 6, 1999·26 cites·4 claims
- 0945US5431221AJar enhancerHOUSTON ENGINEERS INC·Filed 1993·Granted Jul 11, 1995·26 cites·8 claims
- 1037US5595253AHydraulic jar with improved detent ringHOUSTON ENGINEERS INC·Filed 1995·Granted Jan 21, 1997·18 cites·6 claims
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