Robert W. Siegfried II

Person

Downers Grove, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Downhole wellbore tool for measuring flow parameters
- Patent number 5,251,479
- Issue date Oct 12, 1993
- Atlantic Richfield Company
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole wellbore flowmeter tool
- Patent number 4,928,758
- Issue date May 29, 1990
- Atlantic Richfield Company
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tubing conveyed wellbore fluid flow measurement system
- Patent number 4,928,759
- Issue date May 29, 1990
- Atlantic Richfield Company
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for acoustically measuring wall thickness of tubular goods
- Patent number 4,912,683
- Issue date Mar 27, 1990
- Atlantic Richfield Company
- Keith W. Katahara
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for investigating wellbores and the like
- Patent number 4,867,264
- Issue date Sep 19, 1989
- Atlantic Richfield Company
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drive mechanism for borehole televiewer
- Patent number 4,829,488
- Issue date May 9, 1989
- Atlantic Richfield Company
- Robert W. Siegfried
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Televiewer processing system
- Patent number 4,803,667
- Issue date Feb 7, 1989
- Atlantic Richfield Company
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for measuring formation compression and shear...
- Patent number 4,701,891
- Issue date Oct 20, 1987
- Atlantic Richfield Company
- John P. Castagna
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic surface texture measurement apparatus and method
- Patent number 4,646,565
- Issue date Mar 3, 1987
- Atlantic Richfield Co.
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Borehole ultrasonic flow meter
- Patent number 4,452,077
- Issue date Jun 5, 1984
- Atlantic Richfield Company
- Robert W. Siegfried
- E21 - EARTH DRILLING MINING
Information Patent Grant
Continuous wave sonic logging
- Patent number 4,419,748
- Issue date Dec 6, 1983
- Atlantic Richfield Company
- Robert W. Siegfried
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Instantaneous spectral analysis
- Publication number 20050010366
- Publication date Jan 13, 2005
- Gas Technology Institute
- John P. Castagna
- G01 - MEASURING TESTING

Robert W. Siegfried II

Person

Patents Grantslast 30 patents

Downhole wellbore tool for measuring flow parameters

Downhole wellbore flowmeter tool

Tubing conveyed wellbore fluid flow measurement system

Method for acoustically measuring wall thickness of tubular goods

Apparatus and method for investigating wellbores and the like

Drive mechanism for borehole televiewer

Televiewer processing system

Method and apparatus for measuring formation compression and shear...

Ultrasonic surface texture measurement apparatus and method

Borehole ultrasonic flow meter

Continuous wave sonic logging

Patents Applicationslast 30 patents

Instantaneous spectral analysis