Inventor
Karl-Heinz Grodde
Inventor
Celle, DE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere31%
C10MLubricating compositions15%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions15%
E21BEarth or rock drilling15%
G01FMeasuring volume, volume flow, mass flow or liquid level8%
G01NInvestigating or analysing materials by determining their chemical or physical properties8%
G01VGeophysics8%
PatentTitleYear
4,579,175'Method of reducing water production'19864,282,930'Process for the recovery of petroleum from subterranean formations'19814,214,475'Adapter for a sensitive viscometer'19804,212,794'Aqueous drilling fluid'19804,083,790'Aqueous drilling fluid'19783,959,647'Gamma-ray measuring method for determining an interface between media'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1986Patents assigned to TEXACO AG (6)· patent assignee history
1976–1986Based in Celle, DE· patent location history
1980Patents assigned to TEXACO INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TEXACO AG | 6 | 1976–1986 |
| TEXACO INC | 1 | 1980 |
Locations
| Location | Patents | Span |
|---|---|---|
| Celle, DE | 6 | 1976–1986 |