B03D 1/1443
Feed or discharge mechanisms for flotation tanks
Official title: {Feed or discharge mechanisms for flotation tanks}
B03D1/1443 (Feed or discharge mechanisms for flotation tanks) appears on 610 US grants and 365 published applications in this corpus.
Search patents in B03D- Granted patents
- 610
- Published applications
- 365
- Assignees
- 413
- Inventors
- 1,041
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 8 | 0 |
| 1980 | 17 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 8 | 0 |
| 1984 | 16 | 0 |
| 1985 | 9 | 0 |
| 1986 | 12 | 0 |
| 1987 | 8 | 0 |
| 1988 | 12 | 0 |
| 1989 | 11 | 0 |
| 1990 | 15 | 0 |
| 1991 | 14 | 0 |
| 1992 | 23 | 0 |
| 1993 | 20 | 0 |
| 1994 | 19 | 0 |
| 1995 | 11 | 0 |
| 1996 | 27 | 0 |
| 1997 | 15 | 0 |
| 1998 | 18 | 0 |
| 1999 | 14 | 0 |
| 2000 | 17 | 0 |
| 2001 | 6 | 5 |
| 2002 | 7 | 7 |
| 2003 | 8 | 13 |
| 2004 | 11 | 25 |
| 2005 | 11 | 11 |
| 2006 | 6 | 9 |
| 2007 | 7 | 9 |
| 2008 | 5 | 15 |
| 2009 | 5 | 12 |
| 2010 | 11 | 21 |
| 2011 | 10 | 21 |
| 2012 | 15 | 15 |
| 2013 | 15 | 22 |
| 2014 | 12 | 12 |
| 2015 | 18 | 16 |
| 2016 | 13 | 14 |
| 2017 | 5 | 9 |
| 2018 | 15 | 14 |
| 2019 | 8 | 10 |
| 2020 | 14 | 25 |
| 2021 | 17 | 22 |
| 2022 | 11 | 16 |
| 2023 | 8 | 15 |
| 2024 | 18 | 10 |
| 2025 | 11 | 14 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water treatment apparatus26 May 2026US 12,637,366 B1
- Method and system for flotation separation in a magnetically controllable and steerable medium5 May 2026US 12,618,010 B2Cidra Corporate Services Inc.
- De-aerating froth products27 Jan 2026US 12,533,608 B2The University of Queensland
- Pre-flotation high efficiency slurry conditioning device for wide-particle-grade flotation13 Jan 2026US 12,521,732 B2China University of Mining and Technology
- Headrace system13 Jan 2026US 12,522,518 B2Utsunomiya Kogyo Co., Ltd.
- Inflatable froth crowder apparatus for flotation machines27 Aug 2026US 2026/0249306 A1FLSmidth A/S
- Scum removal system in sewage treatment plant30 Jul 2026US 2026/0217571 A1Utsunomiya Kogyo Co., Ltd.
- Method, apparatus and system for removal of pfas from an aqueous source and production of concentrated pfas product15 Jan 2026US 2026/0015258 A1
- Treating per- and poly-fluoroalkyl substances in landfill leachate21 Aug 2025US 2025/0263310 A1
- The control of continuous water treatment14 Aug 2025US 2025/0256998 A1The Water & Carbon Group Pty, Ltd.
Most cited
By later US patents
- Air-sparged hydrocyclone and method141US 4,279,743 AUniversity of Utah · 1981
- Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles82US 4,981,582 AVirginia Tech Intellectual Properties, Inc. · 1991
- Air sparged hydrocyclone flotation apparatus and methods for separating particles from a particulate suspension80US 4,838,434 AUniversity of Utah · 1989
- Flotation apparatus and method77US 4,744,890 AUniversity of Utah · 1988
- System and method for minimizing the negative enviromental impact of the oilsands industry76US 8,424,601 B2Ex-Tar Technologies · 2013