Inventor
Pierre Grolet
Inventor
Orgerus, FR
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling29%
G01VGeophysics29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
4,648,478'Device for generating sound pulses inside a well, by percussion'19874,564,083'Device for generating acoustic shear waves in the earth'19864,294,318'Device for measuring the stresses applied in use to the downhole assembly of a drill pipe'19813,941,146'Apparatus for storing a flexible elongated member, such as a flexible drill column'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1987Patents assigned to INST FRANCAIS DU PETROLE (4)· patent assignee history
1976–1987Based in Orgerus, FR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INST FRANCAIS DU PETROLE | 4 | 1976–1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Orgerus, FR | 4 | 1976–1987 |