D21F 1/04
Head boxes of cylinder machines
D21F1/04 (Head boxes of cylinder machines) appears on 23 US grants and 12 published applications in this corpus.
Search patents in D21F- Granted patents
- 23
- Published applications
- 12
- Assignees
- 16
- Inventors
- 47
- Latest grant
- 18 Sep 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 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 | 1 | 0 |
| 2002 | 1 | 6 |
| 2003 | 4 | 3 |
| 2004 | 0 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Sheet former18 Sep 2018US 10,077,530 B2BS Co., Ltd.
- Distribution device for feeding of cellulose pulp31 Jan 2012US 8,105,464 B2Metso Paper, Inc.
- Single ply webs with increased softness having two outer layers and a middle layer27 Sep 2005US 6,949,166 B2Kimberly-Clark Worldwide, Inc.
- Creped and imprinted web6 Sep 2005US 6,939,440 B2Kimberly-Clark Worldwide, Inc.
- Process for increasing the softness of base webs and products made therefrom19 Aug 2003US 6,607,635 B2Kimberly-Clark Worldwide, Inc.
- Sheet former22 Jun 2017US 2017/0175330 A1BS Co., Ltd.
- Distribution device for feeding of cellulose pulp24 Feb 2011US 2011/0042026 A1Metso Paper, Inc.
- Former and headbox for said former10 Mar 2005US 2005/0051289 A1
- Process for increasing the softness of base webs and products made therefrom20 Nov 2003US 2003/0213574 A1Kimberly-Clark Worldwide, Inc.
- Process for increasing the softness of base webs and products made therefrom30 Oct 2003US 2003/0201081 A1Kimberly-Clark Worldwide, Inc.
Most cited
By later US patents
- Paper product having improved fuzz-on-edge property85US 6,585,855 B2Kimberly-Clark Worldwide, Inc. · 2003
- Process for increasing the softness of base webs and products made therefrom62US 6,607,638 B2Kimberly-Clark Worldwide, Inc. · 2003
- Process for increasing the softness of base webs and products made therefrom12US 6,547,926 B2Kimberly-Clark Worldwide, Inc. · 2003
- Process for increasing the softness of base webs and products made therefrom11US 6,607,635 B2Kimberly-Clark Worldwide, Inc. · 2003
- Breast box having an adjustable lip in a paper making machine9US 3,943,035 ASulzer Brothers Limited · 1976