Inventor · disambiguated record
Curtis Ring
Also filed as: RING CURTIS · RING CURTIS P · RING CURTIS PHILLIP
21 granted patents·319 citations·filing 1974–2019
95Inventor score
Files withDEERE & CO5SCHLUMBERGER TECHNOLOGY CORP4ALBERTA BASIC IND LTD3TORSCH INC2569 396 ALBERTA LTD1
Top patents by PatentIndex Score
21 records- 0194US10508526B2Fracing plugSCHLUMBERGER TECHNOLOGY CORP·Filed 2017·Granted Dec 17, 2019·12 cites·25 claims
- 0280US11162345B2Fracing plugSCHLUMBERGER TECHNOLOGY CORP·Filed 2019·Granted Nov 2, 2021·2 cites·16 claims
- 0380US3986439APiston and slipper arrangement for hydraulic pump or motorDEERE & CO·Filed 1974·Granted Oct 19, 1976·29 cites·9 claims
- 0476US11499400B2Punch mechanismTORSCH INC·Filed 2019·Granted Nov 15, 2022·2 cites·16 claims
- 0575US11384621B2Automatic flow control valveTORSCH INC·Filed 2018·Granted Jul 12, 2022·2 cites·5 claims
- 0675US5996688AHydraulic pump jack drive system for reciprocating an oil well pump rodECOQUIP ARTIFICIAL LIFT LTD·Filed 1998·Granted Dec 7, 1999·47 cites·29 claims
- 0774US10851616B2Wireline suspendable apparatus for sealing a subterranean wellKNIGHT PETER·Filed 2018·Granted Dec 1, 2020·2 cites·18 claims
- 0872US9638003B2Sleeve valveSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted May 2, 2017·4 cites·17 claims
- 0971US8056621B2Master ball valve with integrated hangerRING CURTIS PHILLIP·Filed 2009·Granted Nov 15, 2011·16 cites·3 claims
- 1068US5875841AOil well blow-out preventerALBERTA BASIC IND LTD·Filed 1997·Granted Mar 2, 1999·55 cites·6 claims
- 1165US9689236B2Liner hangerSTEELHAUS TECH INC·Filed 2013·Granted Jun 27, 2017·3 cites·15 claims
- 1257US9617823B2Axially compressed and radially pressed sealSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Apr 11, 2017·1 cites·16 claims
- 1354US5794693ADual tubing string hanging apparatusALBERTA BASIC IND LTD·Filed 1996·Granted Aug 18, 1998·33 cites·27 claims
- 1450US5383519AApparatus for rotating a tubing string of a pumping wellhead569396 ALBERTA LTD·Filed 1993·Granted Jan 24, 1995·26 cites·9 claims
- 1549US3995973AVariable displacement hydraulic systemDEERE & CO·Filed 1975·Granted Dec 7, 1976·12 cites·18 claims
- 1647US6199630B1Pull-through tubing string rotator for an oil wellALBERTA BASIC IND LTD·Filed 1999·Granted Mar 13, 2001·28 cites·14 claims
- 1744US5746249AOil well blow-out preventer and sealing device569 396 ALBERTA LTD·Filed 1996·Granted May 5, 1998·22 cites·20 claims
- 1844US4480963APump swashplate control assistDEERE & CO·Filed 1982·Granted Nov 6, 1984·8 cites·11 claims
- 1936US4518319AVariable displacement pump systemDEERE & CO·Filed 1984·Granted May 21, 1985·4 cites·7 claims
- 2034US4658917AEnclosed jar toolBRALORNE RESOURCES LTD·Filed 1985·Granted Apr 21, 1987·8 cites·8 claims
- 2131US4057005ADual flow hydraulic system and control valve thereforDEERE & CO·Filed 1975·Granted Nov 8, 1977·3 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Curtis Ring files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →