D21D 5/28
Tanks for storing or agitating pulp
D21D5/28 (Tanks for storing or agitating pulp) appears on 28 US grants and 21 published applications in this corpus.
Search patents in D21D- Granted patents
- 28
- Published applications
- 21
- Assignees
- 24
- Inventors
- 55
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 2 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 2 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 4 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 3 | 2 |
| 2024 | 2 | 1 |
| 2025 | 2 | 2 |
| 2026 | 1 | 0 |
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.
- Process for manufacturing a fibre web6 May 2025US 12,291,820 B2
- Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance11 Mar 2025US 12,247,354 B2Kurita Water Industries Ltd.
- Arrangement and method for degassing a pump24 Dec 2024US 12,173,451 B2Andritz Inc.
- Method for predicting or controlling microbial status of a paper or board making process2 Jan 2024US 11,859,347 B2Kemira Oyj
- Biocide control in paper making19 Jun 2025US 2025/0198086 A1Kemira Oyj
- Arrangement and method for degassing a pump27 Mar 2025US 2025/0101681 A1Andritz Inc.
- An accept tank mixing arrangement11 Jul 2024US 2024/0229352 A1Andritz Inc.
- Pulp transportation system11 May 2023US 2023/0148434 A1
- Process for manufacturing a fibre web2 Feb 2023US 2023/0031382 A1Kemira Oyj
Most cited
By later US patents
- Storage and homogenizing tank for kaolin suspensions11US 4,325,642 AVysoka skola chemicko-technologicka · 1982
- Method and apparatus for conveying a cellulosic feedstock9US 9,004,742 B2Abengoa Bioenergy New Technologies, Inc. · 2015
- Stirrer apparatus for paper stock7US 4,552,462 AEscher Wyss Limited · 1985
- Method and apparatus for facilitating the discharge of pulp6US 5,106,456 AA. Ahlstrom Corporation · 1992
- Apparatus for dilution of pulp3US 4,521,380 A1985