B01D 24/4626
Construction of spray heads specially adapted for regeneration of the filter material
Official title: {Construction of spray heads specially adapted for regeneration of the filter material or for filtrate discharging}
B01D24/4626 (Construction of spray heads specially adapted for regeneration of the filter material) appears on 50 US grants and 18 published applications in this corpus.
Search patents in B01D- Granted patents
- 50
- Published applications
- 18
- Assignees
- 38
- Inventors
- 69
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 2 | 1 |
| 2015 | 0 | 2 |
| 2016 | 2 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 3 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Wastewater filtering method and apparatus comprising filter media of different sizes9 Sep 2025US 12,410,080 B2Tomorrow Water
- Integrated unit for intake and pretreatment with local backwashing31 Jan 2023US 11,565,199 B2Ide Water Technologies Ltd.
- Methods for cleaning filtration system media20 Sep 2022US 11,446,590 B2Parkson Corporation
- Methods for cleaning filtration system media15 Dec 2020US 10,864,465 B2Schreiber Corporation, Inc.
- Modular distribution and collection assemblies, filter assemblies, and related methods10 Sep 2019US 10,406,456 B1Intuitech, Inc.
- Wastewater filtering method and apparatus comprising filter media of different sizes30 Oct 2025US 2025/0333341 A1Bkt Co., Ltd.
- Wastewater filtering method and apparatus comprising filter media of different sizes30 Oct 2025US 2025/0333342 A1Bkt Co., Ltd.
- Wastewater filtering method and apparatus comprising filter media of different sizes29 Jun 2023US 2023/0202891 A1Bkt Co., Ltd.
- Methods for Cleaning Filtration System Media1 Apr 2021US 2021/0093986 A1Schreiber Corporation, Inc.
- Integrated unit for intake and pretreatment with local backwashing20 Feb 2020US 2020/0054970 A1I. D.E. Technologies Ltd.
Most cited
By later US patents
- Apparatus for uniformly distributing gas and/or liquid in an underdrain lateral system83US 5,156,738 AJohnson Filtration Systems Inc. · 1992
- Filter underdrain apparatus with partitioned distributor conduits62US 5,019,259 A1991
- Filter underdrain block49US 5,108,627 AThe F. B. Leopold Co., Inc. · 1992
- Air duct block for air/water underdrain systems in gravity filters40US 5,160,614 AThe F. B. Leopold Co., Inc. · 1992
- Cap system for underdrains in gravity filters36US 5,269,920 AThe F. B. Leopold Co., Inc. · 1993