Inventor
Josef Gerretz
Inventor
Viersen, DE
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B21Bprimary
B21BRolling of metal63%
Y10TTechnical subjects covered by former us classification19%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling6%
F16CShafts6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
5,291,108'Method of equalizing the torque on a drive of a pilger rolling mill'19945,224,369'Cold pilger rolling mill with reciprocating roll stand'19935,125,253'Cold pilgrim rolling'19925,076,088'Drive for a pilger cold rolling mill'19915,035,132'Apparatus for rotating and advancing stock in pilgrim step cold rolling mills'19915,022,250'Method of pilgrim step rolling'19914,890,470'Loop transport system for a plurality of baskets containing material to be drawn through a drawing machine'19904,858,458'Drive for a pilger cold-rolling mill with balancing of masses and moments'19894,577,483'System for the continuous operation of a cold pilger rolling mill'19864,547,082'Bearing construction of a crankshaft of a cold Pilger rolling mill, or the like'19854,005,595'Feeding workpiece apparatus for cold pilger rolling mills'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Patents assigned to WEAN UNITED INC (1)· patent assignee history
1977–1994Based in Viersen, DE· patent location history
1985Patents assigned to MANNESMANN DEMAG WEAN (1)· patent assignee history
1986Patents assigned to DEMAG AG MANNESMANN (1)· patent assignee history
1989–1994Patents assigned to MANNESMANN AG (8)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MANNESMANN AG | 8 | 1989–1994 |
| DEMAG AG MANNESMANN | 1 | 1986 |
| MANNESMANN DEMAG WEAN | 1 | 1985 |
| WEAN UNITED INC | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Viersen, DE | 11 | 1977–1994 |