Inventor
Karlheinz Bretthauer
Inventor
Clausthal-Zellerfeld, DE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating50%
Y02PClimate change mitigation technologies in the production or processing of goods30%
C21CProcessing of pig-iron, e.g. refining, manufacture of wrought-iron or steel10%
H02KDynamo-electric machines10%
PatentTitleYear
4,701,932'Method for regulating the electrodes in a furnace having freely burning electric arcs'19874,683,577'Method and apparatus for regulating arc discharge furnace'19874,663,764'Method and apparatus for electrically balancing three-phase arc discharge furnaces'19874,459,697'Electrode arrangement for electric arc furnaces'19844,425,658'Conductor arrangement for a three-phase electric arc furnace'19844,395,649'Linear electromagnetic vibrator'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983Patents assigned to BOSCH GMBH ROBERT (1)· patent assignee history
1983Based in Clausthal, DE· patent location history
1984–1987Patents assigned to KRUPP GMBH (5)· patent assignee history
1984–1987Based in Clausthal-Zellerfeld, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KRUPP GMBH | 5 | 1984–1987 |
| BOSCH GMBH ROBERT | 1 | 1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Clausthal-Zellerfeld, DE | 5 | 1984–1987 |
| Clausthal, DE | 1 | 1983 |