D01H 4/52
For friction spinning
Official title: for friction spinning
D01H4/52 (For friction spinning) appears on 37 US grants and 0 published applications in this corpus.
Search patents in D01H- Granted patents
- 37
- Published applications
- 0
- Assignees
- 6
- Inventors
- 34
- Latest grant
- 24 Apr 1990
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 7 | 0 |
| 1986 | 10 | 0 |
| 1987 | 9 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of, and device for, performing a start spinning operation for spinning of a yarn in a friction spinning apparatus24 Apr 1990US 4,918,913 AMaschinenfabrik Rieter AG
- Device for starting or recommencing spinning of a yarn in a friction spinning apparatus15 Aug 1989US 4,856,269 AMaschinenfabrik Rieter AG
- Process and device for piecing to an open-end friction spinning device11 Apr 1989US 4,819,420 ASchubert & Salzer
- Process and device for piecing up an open-end friction spinning device4 Apr 1989US 4,817,380 ASchubert & Salzer
- Friction spinning apparatus14 Mar 1989US 4,811,554 AHollingsworth (U.K.) Limited
No published applications in this class yet.
Most cited
By later US patents
- Piecing up a friction spinning apparatus28US 4,367,623 A1983
- Friction spinning apparatus and method for cleaning28US 4,380,892 A1983
- Process and device for starting spinning on an open-end spinning apparatus25US 4,676,059 ASchubert & Salzer · 1987
- Yarn piecing arrangement for an open-end friction spinning machine18US 4,598,539 A1986
- Method and device for starting the operation of a friction-spinning machine unit16US 4,541,233 AW. Schlafhorst AG & Co. · 1985