B03D 1/1462
Discharge mechanisms for the froth
Official title: {Discharge mechanisms for the froth}
B03D1/1462 (Discharge mechanisms for the froth) appears on 355 US grants and 211 published applications in this corpus.
Search patents in B03D- Granted patents
- 355
- Published applications
- 211
- Assignees
- 254
- Inventors
- 640
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 12 | 0 |
| 1981 | 6 | 0 |
| 1982 | 9 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 16 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 23 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 14 | 0 |
| 2001 | 5 | 3 |
| 2002 | 5 | 4 |
| 2003 | 2 | 7 |
| 2004 | 4 | 15 |
| 2005 | 9 | 8 |
| 2006 | 5 | 6 |
| 2007 | 6 | 7 |
| 2008 | 4 | 10 |
| 2009 | 2 | 6 |
| 2010 | 7 | 12 |
| 2011 | 8 | 10 |
| 2012 | 12 | 11 |
| 2013 | 8 | 14 |
| 2014 | 6 | 6 |
| 2015 | 8 | 8 |
| 2016 | 6 | 6 |
| 2017 | 2 | 4 |
| 2018 | 5 | 5 |
| 2019 | 3 | 7 |
| 2020 | 8 | 16 |
| 2021 | 10 | 13 |
| 2022 | 6 | 8 |
| 2023 | 5 | 9 |
| 2024 | 8 | 7 |
| 2025 | 7 | 7 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water treatment apparatus26 May 2026US 12,637,366 B1
- De-aerating froth products27 Jan 2026US 12,533,608 B2The University of Queensland
- Headrace system13 Jan 2026US 12,522,518 B2Utsunomiya Kogyo Co., Ltd.
- Separator apparatus and feed arrangement for increased capacity4 Nov 2025US 12,458,980 B2FLSmidth A/S
- System for establishing a digital interconnection between vessels for collection of micro-plastics in a secured way30 Sep 2025US 12,428,315 B2
- 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.
- Treating per- and poly-fluoroalkyl substances in landfill leachate21 Aug 2025US 2025/0263310 A1
- Method and apparatus for treating water containing per- and polyfluoroalkyl substances (pfas)12 Jun 2025US 2025/0187943 A1Ultraaqua A/S
- Method And Apparatus For Separation Of A Substance From Water5 Jun 2025US 2025/0178927 A1OPEC Remediation Technologies Pty Limited
Most cited
By later US patents
- Air-sparged hydrocyclone and method141US 4,279,743 AUniversity of Utah · 1981
- 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 treating dust contained in extracted cement kiln combustion gas75US 7,789,944 B2Taiheiyo Cement Corporation · 2010
- Apparatus for dissolved air floatation and similar gas-liquid contacting operations64US 5,382,358 A1995