Jozeph Robert Marcin

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Spruce Grove, CA

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Patents Grantslast 30 patents

Information Patent Grant
Downhole drop plugs, downhole valves, frac tools, and related metho...
- Patent number 10,472,927
- Issue date Nov 12, 2019
- Vanguard Completions Ltd.
- Jozeph Robert Marcin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Stage tool with lower tubing isolation
- Patent number 9,909,390
- Issue date Mar 6, 2018
- Weatherford Technology Holdings, LLC
- Bryce McNabb
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reverse cementing valve
- Patent number 9,334,700
- Issue date May 10, 2016
- Weatherford Technology Holdings, LLC
- Andrew James Hanson
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
DOWNHOLE DROP PLUGS, DOWNHOLE VALVES, FRAC TOOLS, AND RELATED METHO...
- Publication number 20200182013
- Publication date Jun 11, 2020
- VANGUARD COMPLETIONS LTD.
- Jozeph Robert Marcin
- E21 - EARTH DRILLING MINING
Information Patent Application
DOWNHOLE DROP PLUGS, DOWNHOLE VALVES, FRAC TOOLS, AND RELATED METHO...
- Publication number 20170175487
- Publication date Jun 22, 2017
- VANGUARD COMPLETIONS LTD.
- Jozeph Robert Marcin
- E21 - EARTH DRILLING MINING
Information Patent Application
STAGE TOOL WITH LOWER TUBING ISOLATION
- Publication number 20150345252
- Publication date Dec 3, 2015
- Weatherford Technology Holdings, LLC.
- Bryce MCNABB
- E21 - EARTH DRILLING MINING
Information Patent Application
REVERSE CEMENTING VALVE
- Publication number 20130264068
- Publication date Oct 10, 2013
- Andrew James Hanson
- E21 - EARTH DRILLING MINING
Information Patent Application
STEAM SPLITTER
- Publication number 20130186623
- Publication date Jul 25, 2013
- Francis Ian Waterhouse
- E21 - EARTH DRILLING MINING