Inventor
Manfred Espenhahn
Inventor
Essen, DE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C21Dprimary
C21DModifying the physical structure of ferrous metals41%
C22CAlloys35%
B21BRolling of metal12%
C25DProcesses for the electrolytic or electrophoretic production of coatings6%
Y02PClimate change mitigation technologies in the production or processing of goods6%
PatentTitleYear
6,524,400'Process for the production of grain-oriented electric quality sheet with low remagnetization loss and high polarization'20036,503,339'Method for producing non-grain oriented magnetic sheet steel'20036,284,069'Hot-rolling steel strip'20016,284,063'Hot-rolled steel strip and method of making it'20016,153,019'Process for producing a grain-orientated electrical steel sheet'20005,759,294'Process for the production of grain oriented magnetic steel sheets having improved remagnetization losses'19985,711,825'Process for the production of grain oriented magnetic steel sheets having improved remagnetization losses'19984,347,115'Electroplating apparatus'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982Patents assigned to THYSSEN AG (1)· patent assignee history
1982–2003Based in Essen, DE· patent location history
1998–2001Patents assigned to THYSSEN STAHL AG (4)· patent assignee history
2001–2003Patents assigned to THYSSENKRUPP STAHL AG (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| THYSSEN STAHL AG | 4 | 1998–2001 |
| THYSSENKRUPP STAHL AG | 3 | 2001–2003 |
| THYSSEN AG | 1 | 1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Essen, DE | 8 | 1982–2003 |