D21B 1/347
Rotor assemblies
Official title: {Rotor assemblies}
D21B1/347 (Rotor assemblies) appears on 30 US grants and 24 published applications in this corpus.
Search patents in D21B- Granted patents
- 30
- Published applications
- 24
- Assignees
- 24
- Inventors
- 48
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 3 |
| 2006 | 1 | 2 |
| 2007 | 2 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 3 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sheet manufacturing apparatus21 Jul 2026US 12,686,969 B2Seiko Epson Corporation
- Method of making fire retardant materials and related products17 Mar 2026US 12,577,732 B2Cleanfiber Inc.
- Pulper for circulating a fibrous stock suspension18 Jun 2024US 12,012,694 B2Voith Patent GmbH
- High-concentration mixer for producing a cellulose suspension having a high cellulose concentration3 Nov 2020US 10,821,408 B2Lenzing Aktiengesellschaft
- Pneumatic core cleaning system24 Sep 2019US 10,422,076 B1Brunn Air Systems, Inc.
- Pulping Device17 Oct 2024US 2024/0341534 A1Shangshui Smartech Ltd.
- Method of making fire retardant materials and related products13 Jun 2024US 2024/0191430 A1ClLEANFIBER INC..
- Sheet manufacturing apparatus23 May 2024US 2024/0167223 A1Seiko Epson Corporation
- Pulper for circulating a fibrous stock suspension4 Feb 2021US 2021/0032811 A1Voith Patent GmbH
- Device for treating material, comprising a container13 Jun 2019US 2019/0176106 A1
Most cited
By later US patents
- Apparatus for pulping high consistency paper making stock20US 4,725,007 AThe Black Clawson Company · 1988
- Pulping apparatus for liquid slurry stock18US 4,109,872 AThe Black Clawson Company · 1978
- Pulping apparatus including a rotor and helical screw flights extending upwardly from the rotor17US 4,535,943 AThe Black Clawson Company · 1985
- Turbines for fiber separation17US 4,607,802 AE et M Lamort · 1986
- Pulping apparatus including improved rotor16US 4,480,796 ABeloit Corporation · 1984