Inventor · disambiguated record
Robert L. Heinonen
Also filed as: HEINONEN ROBERT L
8 granted patents·1 pending application·213 citations·filing 1985–2005
88Inventor score
Technology areasE21B
Files withDOUBLE E INC9
Top patents by PatentIndex Score
9 records- 0179US4907650AWellhead with safety valve for pumping wellDOUBLE E INC·Filed 1989·Granted Mar 13, 1990·62 cites·22 claims
- 0265US6223819B1Wellhead for providing structure when utilizing a well pumping systemDOUBLE E INC·Filed 1999·Granted May 1, 2001·50 cites·7 claims
- 0363US5044602ABlowout preventerDOUBLE E INC·Filed 1990·Granted Sep 3, 1991·41 cites·21 claims
- 0457US5246067AWell leak catcherDOUBLE E INC·Filed 1992·Granted Sep 21, 1993·36 cites·19 claims
- 0554US7363985B2Hydraulic latch for capillary tubing stringDOUBLE E INC·Filed 2005·Granted Apr 29, 2008·4 cites·30 claims
- 0638US5878812AMisaligning wellhead systemDOUBLE E INC·Filed 1997·Granted Mar 9, 1999·16 cites·9 claims
- 0733US6955225B2Method of and apparatus for securing capillary tubing in a wellheadDOUBLE E INC·Filed 2003·Granted Oct 18, 2005·0 cites·14 claims
- 0832US2004159441A1Method of and apparatus for dual packing of capillary tubing in a wellheadDOUBLE E INC·Filed 2003·Application pending·0 cites
- 0930US4632468AGuide for well pump sucker rodDOUBLE E INC·Filed 1985·Granted Dec 30, 1986·4 cites·17 claims
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