Inventor
Heinrich-Wilhelm Rommerswinkel
Inventor
Mulheim, DE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C21Cprimary
C21CProcessing of pig-iron, e.g. refining, manufacture of wrought-iron or steel100%
PatentTitleYear
4,772,317'High alloy steel making'19884,539,042'Preventing an increase of the nitrogen content in molten steel'19854,123,258'Process for the production of steel with increased ductility and for the desulfurization of a steel melt'19784,067,730'Process for the production of steel with increased ductility'19783,992,195'Process for the production of steel with increased ductility'19763,980,469'Method of desulfurization of a steel melt'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1978Patents assigned to THYSSEN NIEDERRHEIN AG (4)· patent assignee history
1976–1978Based in Mulheim, DE· patent location history
1978Based in Muhlheim, DE· patent location history
1985–1988Patents assigned to MANNESMANN AG (2)· patent assignee history
1985Based in Mulheim-Saarn, DE· patent location history
1988Based in Muehlheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| THYSSEN NIEDERRHEIN AG | 4 | 1976–1978 |
| MANNESMANN AG | 2 | 1985–1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mulheim, DE | 3 | 1976–1978 |
| Muehlheim, DE | 1 | 1988 |
| Mulheim-Saarn, DE | 1 | 1985 |
| Muhlheim, DE | 1 | 1978 |