D21F 1/046
With non-immersed cylinder
Official title: {with non-immersed cylinder}
D21F1/046 (With non-immersed cylinder) appears on 12 US grants and 4 published applications in this corpus.
Search patents in D21F- Granted patents
- 12
- Published applications
- 4
- Assignees
- 10
- Inventors
- 27
- Latest grant
- 15 Oct 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Variable hydraulic pulse drainage cylinder former15 Oct 2002US 6,464,836 B2Smurfit Carton y Papel de Mexico S.A. de C.V.
- Former with a floating upper lip31 Oct 2000US 6,139,690 AVoith Sulzer Papiermaschinen GmbH
- Vari-flow headbox with large and small flow inlet systems25 Dec 1990US 4,980,027 ASandy Hill Corporation
- Vat paper machine21 Apr 1987US 4,659,432 AKMW Aktiebolag
- Flowbox system for wet-laying a multiply fibrous web19 Oct 1982US 4,354,902 A
- Former and headbox for said former10 Mar 2005US 2005/0051289 A1
- Variable hydraulic pulse drainage cylinder former26 Dec 2002US 2002/0195214 A1
- Head box for paper making machine with improved nozzle for stock solution26 Dec 2002US 2002/0195219 A1
- Variable hydraulic pulse drainage cylinder former11 Jul 2002US 2002/0088591 A1Smurfit Carton y Papel de Mexico S.A. de C.V.
Most cited
By later US patents
- Papermaking machine headbox having a feed channel and an adjacent overflow sump9US 4,146,425 ASulzer Brothers Limited · 1979
- Pulp feed for a papermaking machine8US 4,280,870 AEscher Wyss Limited · 1981
- Pulp feed for a paper making machine7US 4,154,649 AEscher Wyss Limited · 1979
- Head box for cylinder molds having a flexible lid element6US 4,050,499 ABoxboard Research and Development Association · 1977
- Cylinder mold former with flow box and pressure lid5US 4,024,016 AJ. H. Horne & Sons, Inc. · 1977