E03B 3/18
Well filters
Official title: Well filters (filters in general B01D24/00 - B01D35/00)
E03B3/18 (Well filters) appears on 46 US grants and 36 published applications in this corpus.
Search patents in E03B- Granted patents
- 46
- Published applications
- 36
- Assignees
- 28
- Inventors
- 82
- Latest grant
- 12 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 3 |
| 2011 | 2 | 4 |
| 2012 | 0 | 3 |
| 2013 | 2 | 3 |
| 2014 | 3 | 1 |
| 2015 | 1 | 3 |
| 2016 | 4 | 1 |
| 2017 | 1 | 3 |
| 2018 | 2 | 2 |
| 2019 | 2 | 1 |
| 2020 | 3 | 4 |
| 2021 | 4 | 1 |
| 2022 | 0 | 2 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air burst system for cleaning submerged screen intake12 Nov 2024US 12,138,592 B2Johnson Screens, Inc.
- Multipurpose devices and methods for sealing, measuring, and surging fluids in casings14 Nov 2023US 11,813,650 B1Alexander Innovations, LLC
- Underdrain assembly and method of manufacturing same7 Mar 2023US 11,596,878 B2Meurer Research, Inc.
- Air burst system for cleaning submerged screen intake7 Dec 2021US 11,192,068 B2Aqseptence Group, Inc.
- Underdrain assembly and method of manufacturing same20 Apr 2021US 10,981,089 B2Meurer Research, Inc.
- System and method for drilling slant wells18 Jun 2026US 2026/0168214 A1
- Separating device and use of a separating device3 Nov 2022US 2022/0349291 A13M Innovative Properties Company
- Air burst system for cleaning submerged screen intake7 Apr 2022US 2022/0105474 A1Johnson Screens, Inc.
- Underdrain assembly and method of manufacturing same29 Jul 2021US 2021/0229003 A1Meurer Research, Inc.
- Air burst system for cleaning submerged screen intake24 Dec 2020US 2020/0398226 A1Aqseptence Group, Inc.
Most cited
By later US patents
- Apparatus and process for drawing water from a water-bearing strata21US 4,014,387 AThyssen Plastik Anger KG · 1977
- Integral well filter and screen and method for making and using same19US 6,390,192 B2Well, Well, Well, Inc. · 2002
- Wellpoint with adjustable valve16US 3,930,538 AGriffin Wellpoint Corporation · 1976
- System for recharging aquifer and apparatus therefor16US 4,199,272 A1980
- Unsintered mesh sand control screen15US 7,578,344 B2Purolator Facet, Inc. · 2009