Inventor · disambiguated record
Paul M. Helderle
Also filed as: HELDERLE PAUL · HELDERLE PAUL M · HELDERLE PAUL MAXIME
7 granted patents·145 citations·filing 1982–2008
86Inventor score
Top patents by PatentIndex Score
7 records- 0170US4560005ASliding-sleeve valve for an oil wellPETROLES CIE FRANCAISE·Filed 1984·Granted Dec 24, 1985·48 cites·9 claims
- 0269US6378611B1Procedure and device for treating well perforationsTOTAL FINA S A·Filed 2000·Granted Apr 30, 2002·41 cites·24 claims
- 0359US8418772B2Mandrel to be inserted into a liquid circulation pipe and associated positioning methodMILLET FRANCOIS·Filed 2008·Granted Apr 16, 2013·2 cites·13 claims
- 0458US4597446ASafety valves for wellsPETROLES CIE FRANCAISE·Filed 1983·Granted Jul 1, 1986·25 cites·19 claims
- 0552US4518036ADevice for controlling a safety valve disposed below an activation pump in a hydrocarbon production wellPETROLES CIE FRANCAISE·Filed 1982·Granted May 21, 1985·13 cites·6 claims
- 0630US4651827AHydraulically controlled safety valves for incorporation in production tubes of hydrocarbon production wellsPETROLES CIE FRANCAISE·Filed 1986·Granted Mar 24, 1987·9 cites·7 claims
- 0729US4726422AAnnular safety assembly for an oil well, especially a double production zone wellTOTAL PETROLES·Filed 1986·Granted Feb 23, 1988·7 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →