Inventor
Emmanuel Varenne
Inventor
Villefranche-sur-Saone, FR
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Lprimary
F16LPipes60%
E21BEarth or rock drilling40%
PatentTitleYear
7,331,614'Tubular threaded joint with trapezoid threads having convex bulged thread surface'20086,789,823'Tubular threaded joint with reinforced stop'20046,712,401'Tubular threaded joint capable of being subjected to diametral expansion'20046,481,760'Threaded connection of two metal tubes with groove in the threading'20026,412,831'Threaded connection of two metal tubes with high tightening torque'20026,349,979'Integral threaded assembly of two metal tubes'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2008Patents assigned to VALLOUREC MANNESMANN OIL & GAS (6)· patent assignee history
2002Based in Valenciennes, FR· patent location history
2004–2008Patents assigned to SUMITOMO METAL IND (2)· patent assignee history
2004–2008Based in Villefranche-sur-Saone, FR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| VALLOUREC MANNESMANN OIL & GAS | 6 | 2002–2008 |
| SUMITOMO METAL IND | 2 | 2004–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Villefranche-sur-Saone, FR | 3 | 2004–2008 |
| Valenciennes, FR | 3 | 2002 |