Inventor
Erich Richartz
Inventor
Grafing, DE
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C21Dprimary
C21DModifying the physical structure of ferrous metals18%
E04CStructural elements18%
Y10TTechnical subjects covered by former us classification18%
B21BRolling of metal9%
D07BRopes or cables in general9%
E02DFoundations9%
F16GBelts, cables, or ropes, predominantly used for driving purposes9%
Y02PClimate change mitigation technologies in the production or processing of goods9%
PatentTitleYear
6,322,281'Corrosion-protected tension member of steel'20015,707,181'Method of producing an intended breaking point in a tension member for a soil anchor'19984,953,379'Hot-rolled steel bar with helically extending ribs, method of and apparatus for producing the steel bar'19904,923,528'Method for manufacturing rolled steel products'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2001Patents assigned to DYCKERHOFF & WIDMANN AG (3)· patent assignee history
1990Patents assigned to AICHER MAX (1)· patent assignee history
1990Based in Munich, DE· patent location history
1990Based in Peine, DE· patent location history
1998Based in Grafelfing, DE· patent location history
2001Patents assigned to BEKAERT CMTM GMBH (1)· patent assignee history
2001Patents assigned to DWK DRAHTWERK KOELN GMBH (1)· patent assignee history
2001Based in Grafing, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DYCKERHOFF & WIDMANN AG | 3 | 1990–2001 |
| AICHER MAX | 1 | 1990 |
| BEKAERT CMTM GMBH | 1 | 2001 |
| DWK DRAHTWERK KOELN GMBH | 1 | 2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Grafing, DE | 1 | 2001 |
| Grafelfing, DE | 1 | 1998 |
| Munich, DE | 1 | 1990 |
| Peine, DE | 1 | 1990 |