D21C 9/1031
Pulse, dynamic, displacement processes
Official title: {Pulse, dynamic, displacement processes}
D21C9/1031 (Pulse, dynamic, displacement processes) appears on 3 US grants and 2 published applications in this corpus.
Search patents in D21C- Granted patents
- 3
- Published applications
- 2
- Assignees
- 3
- Inventors
- 7
- Latest grant
- 28 Mar 2006
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 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 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing28 Mar 2006US 7,018,509 B2International Paper Company
- Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release22 Jan 2002US 6,340,409 B1
- Method for bleaching of cellulosic pulp24 Aug 1976US 3,976,538 AKamyr Aktiebolag
Most cited
By later US patents
- Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing8US 7,018,509 B2International Paper Company · 2006
- Method for bleaching of cellulosic pulp2US 3,976,538 AKamyr Aktiebolag · 1976
- Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release1US 6,340,409 B12002