D21F 1/82
Adding fibre agglomeration compositions
Official title: adding fibre agglomeration compositions
D21F1/82 (Adding fibre agglomeration compositions) appears on 16 US grants and 11 published applications in this corpus.
Search patents in D21F- Granted patents
- 16
- Published applications
- 11
- Assignees
- 17
- Inventors
- 51
- Latest grant
- 4 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 2 |
| 2022 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of and an arrangement for adding at least one additional stock component to an approach flow system of a fiber web machine4 Oct 2022US 11,459,700 B2Valmet Technologies Oy
- Method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine7 Jun 2022US 11,352,749 B2Valmet Technologies Oy
- Increased drainage performance in papermaking systems using microfibrillated cellulose1 Dec 2020US 10,851,498 B2Solenis Technologies, L.P.
- Sheet manufacturing apparatus and sheet manufacturing method26 Dec 2017US 9,849,634 B2Seiko Epson Corporation
- Method for manufacturing paper using a cationic polymer obtained by hofmann degradation5 Apr 2016US 9,303,359 B2S.P.C.M. SA
- Composite, molded product, and method for producing molded product30 Sep 2021US 2021/0301106 A1Seiko Epson Corporation
- Method of and an arrangement for adding at least one additional stock component to an approach flow system of a fiber web machine24 Jun 2021US 2021/0189650 A1Valmet Technologies Oy
- Method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine31 Dec 2020US 2020/0407913 A1Valmet Technologies Oy
- A method for measuring disintegration of a fibrous product16 Apr 2020US 2020/0116620 A1Kemira Oyj
- Increased drainage performance in papermaking systems using microfibrillated cellulose22 Mar 2018US 2018/0080175 A1Solenis Technologies, L.P.
Most cited
By later US patents
- Papermaking and products made thereby159US 4,388,150 AEKA Aktiebolag · 1983
- Fibrous assemblies from cationically and anionically charged fibers91US 3,998,690 AThe Procter & Gamble Company · 1976
- Papermaking72US 4,385,961 AEKA Aktiebolag · 1983
- Compositions for use with papermaking fillers22US 4,272,297 ABlue Circle Industries Limited · 1981
- Method for recycling paper mill waste water20US 4,115,188 A1978