Inventor
Ralph M. D'Angelo
Inventor
New Fairfield, CT, US
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Vprimary
G01VGeophysics37%
E21BEarth or rock drilling20%
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves7%
C09KMaterials for miscellaneous applications, not provided for elsewhere3%
F16HGearing3%
G01SRadio direction-finding3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
10,295,692Fracture detection and localization using acoustic reflections201910,126,454Method and system for fracture detection using acoustic waves20189,625,599'Downhole elastic anisotropy measurements'20179,328,606'Method and device to measure perforation tunnel dimensions'20169,260,958'System and method for acoustic imaging using a transducer array'20168,611,183'Measuring standoff and borehole geometry'20138,321,133'Measurement of sound speed of downhole fluid utilizing tube waves'20128,215,393'Method for treating well bore within a subterranean formation'20127,095,676'Assessing a solids deposit in an oilfield pipe'20066,678,616'Method and tool for producing a formation velocity image data set'20046,643,221'Structures and methods for damping tool waves particularly for acoustic logging tools'20036,510,389'Acoustic detection of stress-induced mechanical damage in a borehole wall'20036,018,496'Method and apparatus for hydraulic isolation determination'20005,521,882'Measurement of formation characteristics using acoustic borehole tool having sources of different frequencies'19965,412,990'Method for measuring cement thickening times'19955,274,604'Method for spatially filtering signals representing formation and channel echoes in a borehole environment'19934,302,982'Key and keyway arrangement'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to BELL TELEPHONE LABOR INC (1)· patent assignee history
1981Based in South Toms River, NJ, US· patent location history
1993–2019Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (16)· patent assignee history
1993–2016Based in New Fairfield, CT, US· patent location history
2012–2016Patents assigned to D ANGELO RALPH M (3)· patent assignee history
2012Patents assigned to DROGER NICOLAS (1)· patent assignee history
2012–2019Based in Weymouth, MA, US· patent location history
2013Patents assigned to D ANGELO RALPH MICHAEL (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHLUMBERGER TECHNOLOGY CORP | 16 | 1993–2019 |
| D ANGELO RALPH Mself | 3 | 2012–2016 |
| BELL TELEPHONE LABOR INC | 1 | 1981 |
| D ANGELO RALPH MICHAELself | 1 | 2013 |
| DROGER NICOLAS | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| New Fairfield, CT, US | 11 | 1993–2016 |
| Weymouth, Massachusetts, US | 5 | 2012–2019 |
| South Toms River, New Jersey, US | 1 | 1981 |