D21D 1/32
Hammer mills
D21D1/32 (Hammer mills) appears on 14 US grants and 8 published applications in this corpus.
Search patents in D21D- Granted patents
- 14
- Published applications
- 8
- Assignees
- 9
- Inventors
- 29
- Latest grant
- 5 Feb 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 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 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for processing grass for manufacturing paper, paperboard and cardboard5 Feb 2019US 10,196,775 B2
- Method and apparatus for producing product from stock pulp sheet5 May 2015US 9,023,180 B2Unicharm Corporation
- Method and apparatus for producing product from stock pulp sheet5 Mar 2013US 8,388,810 B2Uni-Charm Corporation
- Process for singulating cellulose fibers from a wet pulp sheet15 Jul 2008US 7,399,377 B2Weyerhaeuser Company
- Nits separator14 Nov 2006US 7,134,859 B1M&J Fibretech A/S
- A milling device and process4 Jul 2024US 2024/0216921 A1
- Method for producing powdered cellulose4 Apr 2024US 2024/0110016 A1SöDra SkogsäGarna Ekonomisk FöRening
- Method for Processing Grass for Manufacturing Paper, Paperboard and Cardboard26 Jan 2017US 2017/0022662 A1
- Method and apparatus for producing product from stock pulp sheet9 Jan 2014US 2014/0008029 A1Uni-Charm Corporation
- Method and apparatus for producing product from stock pulp sheet5 Jul 2012US 2012/0168104 A1Uni-Charm Corporation
Most cited
By later US patents
- Apparatus for separating the components of cellulose sanitary articles21US 4,664,320 A1987
- Method and apparatus for separating the components of cellulose sanitary articles18US 4,500,040 A1985
- Stock pulper14US 3,942,728 AEscher Wyss Limited · 1976
- Apparatus for processing cellulose insulation13US 4,228,964 AEasy Engineering Corporation · 1980
- Stock pulper9US 3,945,576 AEscher Wyss Limited · 1976