D21B 1/342
Mixing apparatus
Official title: {Mixing apparatus}
D21B1/342 (Mixing apparatus) appears on 40 US grants and 22 published applications in this corpus.
Search patents in D21B- Granted patents
- 40
- Published applications
- 22
- Assignees
- 37
- Inventors
- 99
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 3 | 2 |
| 2015 | 2 | 1 |
| 2016 | 3 | 2 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Accept tank mixing arrangement30 Jun 2026US 12,668,920 B2Andritz Inc.
- 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
- Method for treating biomass and device for treating biomass2 Nov 2021US 11,162,216 B2Valmet Corporation
- Device and process for the production of nanocellulose8 Jun 2021US 11,028,532 B2JAROLIM FASERTECHNIK GmbH
- Cellulose nanofilaments and method to produce same2 Jan 2018US 9,856,607 B2FPInnovations
- Sheet production apparatus and sheet production method of sheet production apparatus22 Jan 2026US 2026/0022516 A1Seiko Epson Corporation
- Stirring device, fiber structure manufacturing apparatus, and method of producing fiber structure6 Mar 2025US 2025/0073655 A1Seiko Epson Corporation
- An accept tank mixing arrangement11 Jul 2024US 2024/0229352 A1Andritz Inc.
- Device and process for the production of nanocellulose7 Jan 2021US 2021/0002823 A1JAROLIM FASERTECHNIK GmbH
- 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
Most cited
By later US patents
- Apparatus for gas or liquid admixture48US 4,416,548 ASunds Defibrator Aktiebolag · 1983
- Rotor for increasing mixing efficiency in a medium consistency mixer45US 5,263,774 AKamyr, Inc. · 1993
- Method for dispersing cellulose based fibers in water36US 5,849,155 AE. Khashoggi Industries · 1998
- Medium consistency liquid mixture34US 5,863,120 ABeloit Technologies, Inc. · 1999
- Method and apparatus for treating pulp with oxygen32US 4,295,926 AWeyerhaeuser Company · 1981