Inventor · disambiguated record
Mark Van Houwelingen
Also filed as: VAN HOUWELINGEN MARK · VAN HOUWELINGEN MARK K
9 granted patents·303 citations·filing 2000–2012
91Inventor score
Technology areasE21B
Top patents by PatentIndex Score
9 records- 0194US6454025B1Apparatus for directional boring under mixed conditionsVERMEER MFG CO·Filed 2000·Granted Sep 24, 2002·128 cites·11 claims
- 0289USRE44427EApparatus for directional boring under mixed conditionsRUNQUIST RANDY R·Filed 2012·Granted Aug 13, 2013·11 cites·38 claims
- 0377US6659202B2Steerable fluid hammerVERMEER MFG CO·Filed 2001·Granted Dec 9, 2003·52 cites·9 claims
- 0471US6357537B1Directional drilling machine and method of directional drillingVERMEER MFG CO·Filed 2000·Granted Mar 19, 2002·39 cites·36 claims
- 0568US6491115B2Directional drilling machine and method of directional drillingVERMEER MFG CO·Filed 2001·Granted Dec 10, 2002·33 cites·54 claims
- 0661US6588516B2Method and apparatus for directional boring under mixed conditionsVERMEER MFG CO·Filed 2002·Granted Jul 8, 2003·16 cites·17 claims
- 0754US6390207B2Method and apparatus for directional boring under mixed conditionsEARTH TOOL CO LLC·Filed 2001·Granted May 21, 2002·10 cites·17 claims
- 0851US6439319B1Method and apparatus for directional boring under mixed conditionsEARTH TOOL CO LLC·Filed 2000·Granted Aug 27, 2002·8 cites·18 claims
- 0948US6516899B2Method and apparatus for directional boring under mixed conditionsEARTH TOOL CO LLC·Filed 2001·Granted Feb 11, 2003·6 cites·18 claims
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