Description
MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS (essentially from sheet metal B21D)
B21H
Technology
Sub-Class
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- 0 192 US PATENTS IN FORCE
- 46 US APPLICATIONS PENDING
- 497 Total Patent Owners
- 1236 TOTAL INVENTORS
Subclasses
| Subclass | Title |
|---|---|
| 1/00 | Making articles shaped as bodies of revolution (rolling tubes B21B 17/00-B21B 25/00) |
| 1/02 | Making articles shaped as bodies of revolution (rolling tubes B21B 17/00-B21B 25/00) discs; disc wheels |
| 1/04 | Making articles shaped as bodies of revolution (rolling tubes B21B 17/00-B21B 25/00) discs; disc wheels with rim, e.g. railway wheels |
| 1/06 | Making articles shaped as bodies of revolution (rolling tubes B21B 17/00-B21B 25/00) rings of restricted axial length (extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B 5/00) |
| 1/08 | Making articles shaped as bodies of revolution (rolling tubes B21B 17/00-B21B 25/00) rings of restricted axial length (extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B 5/00) railway wheel rims |
Recent Patents
Not AvailableRecent Publications
Not AvailableTop Owners in This Class
Top Owners in This Subclass
Applications Filed in This Class - By Year
Applications Filed in This Subclass - By Year
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 29 Months (last 2 years Issuances)
- 29 Months (last 5 years Issuances)
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