ERIC SCHMELZL

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CALGARY, CA

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Patents Grantslast 30 patents

Information Patent Grant
Downhole isolation and depressurization tool
- Patent number 9,140,098
- Issue date Sep 22, 2015
- NCS Multistage, LLC
- Donald Getzlaf
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole isolation and depressurization tool
- Patent number 8,931,559
- Issue date Jan 13, 2015
- NCS Oilfield Services Canada, Inc.
- Donald Getzlaf
- E21 - EARTH DRILLING MINING
Information Patent Grant
Packer with equalizing valve and method of use
- Patent number 6,474,419
- Issue date Nov 5, 2002
- Halliburton Energy Services, Inc.
- Gary Maier
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOWNHOLE ISOLATION AND DEPRESSURIZATION TOOL
- Publication number 20150075809
- Publication date Mar 19, 2015
- NCS Oilfield Services Canada Inc.
- Donald Getzlaf
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole Isolation and Depressurization Tool
- Publication number 20130248181
- Publication date Sep 26, 2013
- NCS Oilfield Services Canada, Inc.
- Donald Getzlaf
- E21 - EARTH DRILLING MINING
Information Patent Application
PACKER WITH EQUALIZING VALVE AND METHOD OF USE
- Publication number 20020062962
- Publication date May 30, 2002
- MAIER GARY
- E21 - EARTH DRILLING MINING