Inventor
Pralay Das
Inventor
Sugar Land, TX, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling50%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure13%
Y10TTechnical subjects covered by former us classification13%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations6%
C07CAcyclic or carbocyclic compounds6%
C07DHeterocyclic compounds6%
G01VGeophysics6%
PatentTitleYear
8,916,723'Substituted cyclohexane-1, 3-dione compounds, process for preparation thereof and its applications'20148,746,366'Downhole downlinking system employing a differential pressure transducer'20148,598,195'Peptidomimetic compounds'20138,550,186'Rotary steerable tool employing a timed connection'20138,408,331'Downhole downlinking system employing a differential pressure transducer'20138,157,002'Slip ring apparatus for a rotary steerable tool'20126,839,000'Integrated, single collar measurement while drilling tool'20056,705,406'Replaceable electrical device for a downhole tool and method thereof'20045,386,724'Load cells for sensing weight and torque on a drill bit while drilling a well bore'19954,805,449'Apparatus and method for measuring differential pressure while drilling'19894,739,841'Methods and apparatus for controlled directional drilling of boreholes'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1989Patents assigned to ANADRILL INC (2)· patent assignee history
1988–2014Based in Sugar Land, TX, US· patent location history
1995–2014Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (3)· patent assignee history
2004–2005Patents assigned to BAKER HUGHES INC (2)· patent assignee history
2012–2014Patents assigned to DAS PRALAY (5)· patent assignee history
2012–2013Patents assigned to SMITH INTERNATIONAL (2)· patent assignee history
2013Based in West Bengal, IN· patent location history
2014Based in Palampur, IN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DAS PRALAYself | 5 | 2012–2014 |
| SCHLUMBERGER TECHNOLOGY CORP | 3 | 1995–2014 |
| ANADRILL INC | 2 | 1988–1989 |
| BAKER HUGHES INC | 2 | 2004–2005 |
| SMITH INTERNATIONAL | 2 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sugar Land, Texas, US | 9 | 1988–2014 |
| Palampur, IN | 1 | 2014 |
| West Bengal, IN | 1 | 2013 |