B01F 21/22
Using additional holders in conduits, containers or pools for keeping the solid
Official title: {using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles}
B01F21/22 (Using additional holders in conduits, containers or pools for keeping the solid) appears on 596 US grants and 398 published applications in this corpus.
Search patents in B01F- Granted patents
- 596
- Published applications
- 398
- Assignees
- 257
- Inventors
- 930
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 9 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 17 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 6 | 0 |
| 1993 | 16 | 0 |
| 1994 | 9 | 0 |
| 1995 | 21 | 0 |
| 1996 | 16 | 0 |
| 1997 | 10 | 0 |
| 1998 | 18 | 0 |
| 1999 | 16 | 0 |
| 2000 | 7 | 0 |
| 2001 | 28 | 3 |
| 2002 | 15 | 12 |
| 2003 | 14 | 12 |
| 2004 | 11 | 18 |
| 2005 | 11 | 23 |
| 2006 | 14 | 18 |
| 2007 | 3 | 13 |
| 2008 | 7 | 10 |
| 2009 | 10 | 13 |
| 2010 | 8 | 17 |
| 2011 | 17 | 23 |
| 2012 | 5 | 19 |
| 2013 | 21 | 19 |
| 2014 | 11 | 23 |
| 2015 | 20 | 21 |
| 2016 | 19 | 17 |
| 2017 | 16 | 20 |
| 2018 | 22 | 20 |
| 2019 | 22 | 26 |
| 2020 | 21 | 9 |
| 2021 | 17 | 14 |
| 2022 | 16 | 14 |
| 2023 | 8 | 13 |
| 2024 | 6 | 13 |
| 2025 | 7 | 2 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dispenser25 Aug 2026US 12,714,955 B2King Technology, Inc.
- Chemical dispensers for prolonged water treatment12 May 2026US 12,623,936 B2Innovative Water Care, LLC
- Inline filterwell floating weir dispenser28 Apr 2026US 12,612,319 B2King Technology, Inc.
- High efficiency brine maker17 Mar 2026US 12,576,369 B2Brine Masters, LLC
- Eroding assembly for chlorinator with removable sieve and weir10 Mar 2026US 12,570,557 B2Hammonds Technical Services, Inc.
- Easy clean out brine maker25 Jun 2026US 2026/0175180 A1Brine Masters, LLC
- Eroding assembly for chlorinator with removable sieve and weir18 Jun 2026US 2026/0167535 A1Hammonds Technical Services, Inc.
- Assembly to provide gravity fed curvilinear motion for polymer release and mixing21 May 2026US 2026/0138900 A1
- Systems and methods for improved fluid gun delivery systems19 Mar 2026US 2026/0077318 A1Binks US, LLC
- Venting system for a mixing apparatus26 Feb 2026US 2026/0054198 A1FUJIFILM Irvine Scientific, Inc.
Most cited
By later US patents
- Solid block chemical dispenser for cleaning systems168US 4,826,661 AEcolab Inc. · 1989
- Solid block chemical dispenser for cleaning systems156US 4,690,305 AEcolab Inc. · 1987
- Solid block detergent dispenser155US 4,426,362 AEconomics Laboratory, Inc. · 1984
- Solid block chemical dispenser for cleaning systems149US 4,687,121 AEcolab Inc. · 1987
- Method and basket apparatus for transporting biological samples109US 6,899,850 B2Becton, Dickinson and Company · 2005