D21B 1/08
The raw material being waste paper
Official title: the raw material being waste paper (chemical part D21C5/02); the raw material being rags
D21B1/08 (The raw material being waste paper) appears on 145 US grants and 165 published applications in this corpus.
Search patents in D21B- Granted patents
- 145
- Published applications
- 165
- Assignees
- 49
- Inventors
- 219
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 3 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 2 | 7 |
| 2012 | 2 | 5 |
| 2013 | 5 | 8 |
| 2014 | 7 | 11 |
| 2015 | 12 | 7 |
| 2016 | 6 | 16 |
| 2017 | 7 | 10 |
| 2018 | 6 | 7 |
| 2019 | 8 | 24 |
| 2020 | 15 | 10 |
| 2021 | 13 | 6 |
| 2022 | 6 | 8 |
| 2023 | 7 | 9 |
| 2024 | 6 | 10 |
| 2025 | 9 | 13 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sheet manufacturing apparatus21 Jul 2026US 12,686,969 B2Seiko Epson Corporation
- Material storage apparatus, method of controlling material storage apparatus, and sheet manufacturing apparatus14 Apr 2026US 12,601,112 B2Seiko Epson Corporation
- Separation device30 Dec 2025US 12,509,826 B2Seiko Epson Corporation
- Dispersion device and accumulation device16 Sep 2025US 12,416,109 B2Seiko Epson Corporation
- Fibrous body processing apparatus2 Sep 2025US 12,404,633 B2Seiko Epson Corporation
- Method and device for producing a fibrous web20 Aug 2026US 2026/0243021 A1Andritz Kuesters GmbH
- Pulverization device2 Jul 2026US 2026/0185301 A1Zuiko Corporation
- Sheet production apparatus and sheet production method of sheet production apparatus22 Jan 2026US 2026/0022516 A1Seiko Epson Corporation
- Refining device18 Dec 2025US 2025/0382745 A1Seiko Epson Corporation
- Sheet manufacturing apparatus and method for manufacturing sheet4 Dec 2025US 2025/0369182 A1Seiko Epson Corporation
Most cited
By later US patents
- Processing biomass176US 7,932,065 B2Xyleco, Inc. · 2011
- System and method for producing bonded fiber/cellulose products111US 8,795,470 B22014
- Paper recycling system and paper recycling method54US 8,882,965 B2Seiko Epson Corporation · 2014
- Processing biomass41US 8,168,038 B2Xyleco, Inc. · 2012
- Grinder cylinder control for waste paper grinder39US 4,134,554 AHaybuster Manufacturing, Inc. · 1979