E03F
Sewers
Official title: Sewers; cesspools
E03F (Sewers) appears on 4,988 US grants and 4,029 published applications in this corpus.
Search patents in E03F- Granted patents
- 4,988
- Published applications
- 4,029
- Assignees
- 1,890
- Inventors
- 6,674
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 30 | 0 |
| 1978 | 30 | 0 |
| 1979 | 28 | 0 |
| 1980 | 41 | 0 |
| 1981 | 50 | 0 |
| 1982 | 44 | 0 |
| 1983 | 37 | 0 |
| 1984 | 38 | 0 |
| 1985 | 35 | 0 |
| 1986 | 33 | 0 |
| 1987 | 49 | 0 |
| 1988 | 39 | 0 |
| 1989 | 66 | 0 |
| 1990 | 72 | 0 |
| 1991 | 95 | 0 |
| 1992 | 68 | 0 |
| 1993 | 57 | 0 |
| 1994 | 91 | 0 |
| 1995 | 85 | 0 |
| 1996 | 95 | 0 |
| 1997 | 90 | 0 |
| 1998 | 115 | 0 |
| 1999 | 104 | 0 |
| 2000 | 117 | 0 |
| 2001 | 112 | 27 |
| 2002 | 91 | 71 |
| 2003 | 88 | 68 |
| 2004 | 83 | 129 |
| 2005 | 67 | 123 |
| 2006 | 110 | 105 |
| 2007 | 85 | 141 |
| 2008 | 78 | 153 |
| 2009 | 98 | 133 |
| 2010 | 88 | 144 |
| 2011 | 105 | 151 |
| 2012 | 100 | 150 |
| 2013 | 130 | 157 |
| 2014 | 135 | 196 |
| 2015 | 133 | 146 |
| 2016 | 149 | 217 |
| 2017 | 193 | 201 |
| 2018 | 168 | 226 |
| 2019 | 244 | 221 |
| 2020 | 218 | 217 |
| 2021 | 199 | 233 |
| 2022 | 182 | 223 |
| 2023 | 177 | 168 |
| 2024 | 173 | 160 |
| 2025 | 148 | 159 |
| 2026 | 96 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- E03F 5/00Sewerage structures2,489
- E03F 1/00Methods, systems, or installations for draining-off sewage or storm water1,497
- E03F 3/00Sewer pipe-line systems682
- E03F 7/00Sewers: other installations or implements for operating sewer systems593
- E03F 9/00Arrangements or fixed installations methods or devices for cleaning or clearing sewer516
- E03F 11/00Cesspools151
- E03F 2201/00Details, devices or methods not otherwise provided forIndexing code121
Recent patents
- Waste disposal system6 Oct 2026US 12,752,318 B2Blue Bagger, Inc.
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- Drain cleaners6 Oct 2026US 12,753,596 B2
- Sports field and methods for forming and operating the same29 Sep 2026US 12,746,454 B2Dutchblue World B.V.
- Liquid-collecting arrangement, liquid drainage system and method for use22 Sep 2026US 12,742,322 B2Aco Ahlmann SE & Co. KG
- Hydrodynamic separator with multiple settling sump cones8 Oct 2026US 2026/0306971 A1Advanced Drainage Systems, Inc.
- Drain cleaning device8 Oct 2026US 2026/0307116 A1Milwaukee Electric Tool Corporation
- Drain8 Oct 2026US 2026/0308900 A1
- Clip for a tile insert8 Oct 2026US 2026/0308920 A1Stormtech Pty Limited
- Systems and methods for iot sewer management8 Oct 2026US 2026/0311584 A1Ardurra Group, Inc.
Most cited
By later US patents
- Interactive dynamic real-time management system224US 4,843,575 A1989
- Method and apparatus for organizing storing and retrieving information to administer a sewer system204US 5,812,962 AWhite Oak Borough Authority · 1998
- Water cutoff junction member for concrete products to be joined together198US 6,052,960 AYamax Corporation · 2000
- Method of lining a pipe194US 4,009,063 AInsituform (Pipes & Structures) Ltd. · 1977
- Autonomous mobile robot system for sensor-based and map-based navigation in pipe networks186US 6,108,597 AGMD-Forschungszentrum Informationstechnik GmbH · 2000