E01C 11/224
Surface drainage of streets
Official title: {Surface drainage of streets (draining the subbase of roads, by trenches E01F5/00, by sewers E03F; draining arrangements for bridges E01D19/086)}
E01C11/224 (Surface drainage of streets) appears on 326 US grants and 320 published applications in this corpus.
Search patents in E01C- Granted patents
- 326
- Published applications
- 320
- Assignees
- 181
- Inventors
- 528
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 2 |
| 2003 | 4 | 8 |
| 2004 | 4 | 2 |
| 2005 | 8 | 15 |
| 2006 | 6 | 9 |
| 2007 | 5 | 7 |
| 2008 | 6 | 12 |
| 2009 | 5 | 14 |
| 2010 | 6 | 9 |
| 2011 | 6 | 16 |
| 2012 | 12 | 15 |
| 2013 | 10 | 17 |
| 2014 | 15 | 21 |
| 2015 | 11 | 9 |
| 2016 | 11 | 8 |
| 2017 | 16 | 15 |
| 2018 | 13 | 19 |
| 2019 | 15 | 19 |
| 2020 | 15 | 17 |
| 2021 | 10 | 15 |
| 2022 | 9 | 15 |
| 2023 | 12 | 14 |
| 2024 | 12 | 18 |
| 2025 | 12 | 13 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sports field and methods for forming and operating the same29 Sep 2026US 12,746,454 B2Dutchblue World B.V.
- Method for making a grated trench channel29 Sep 2026US 12,747,545 B2J K Williams Contracting Pty Ltd
- Method of and device for producing concrete blocks7 Apr 2026US 12,594,691 B2Godelmann GmbH & Co. KG
- Universal anchor for use with a grating frame24 Mar 2026US 12,584,308 B2Ohio Gratings, Inc.
- Linear or trench drain systems10 Feb 2026US 12,546,102 B2Advanced Drainage Systems, Inc.
- Solar permeable pavers with drip irrigation and smart technology3 Sep 2026US 2026/0258611 A1Dragon Group Kft
- Drainage apparatus with locking mechanism21 May 2026US 2026/0139466 A1Advanced Drainage Systems, Inc.
- Smart Modular Street and Sidewalk30 Apr 2026US 2026/0117469 A1
- Multi-layered Permeable Paving System19 Mar 2026US 2026/0078552 A1
- Universal anchor for use with a grating frame19 Mar 2026US 2026/0078579 A1Ohio Gratings, Inc.
Most cited
By later US patents
- Mat module with ramp strip137US 4,468,910 A1984
- Chemical safety conduit or trench91US 4,940,359 AACO Polymer Products, Inc. · 1990
- Interlocking paving stone for closed and open drainage patterns83US 5,286,139 A1994
- Floor mat construction74US 4,478,901 ATeknor Apex Company · 1984
- Trench drain system72US 5,529,436 ATuf-Tite, Inc. · 1996