E03F 5/021
Connection of sewer pipes to manhole shaft
Official title: {Connection of sewer pipes to manhole shaft}
E03F5/021 (Connection of sewer pipes to manhole shaft) appears on 101 US grants and 42 published applications in this corpus.
Search patents in E03F- Granted patents
- 101
- Published applications
- 42
- Assignees
- 39
- Inventors
- 126
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 2 |
| 2003 | 6 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 4 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 4 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 3 |
| 2025 | 3 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catch basin trap with collapsible outlet pipe connector and method of making a catch basin11 Aug 2026US 12,704,211 B2Decast Ltd.
- Sewerage basin internal drop apparatus and method24 Feb 2026US 12,559,930 B2
- Connector for mainline pipe and outlet pipe9 Dec 2025US 12,492,774 B2Advanced Drainage Systems, Inc.
- Catch basin system and corresponding water drainage system4 Nov 2025US 12,460,403 B2
- Catch basin system and corresponding water drainage system11 Mar 2025US 12,247,384 B2
- Connector for mainline pipe and outlet pipe12 Mar 2026US 2026/0071710 A1Advanced Drainage Systems, Inc.
- Access chamber10 Apr 2025US 2025/0116103 A1
- Plastic corrugated pipe dual wall to concrete manhole sleeve adapter27 Mar 2025US 2025/0102088 A1Advanced Drainage Systems, Inc.
- Multi-fit pipe adapter27 Mar 2025US 2025/0102093 A1Advanced Drainage Systems, Inc.
- Method, connector and apparatus for connecting a pipe to a pit or a wall20 Feb 2025US 2025/0060061 A1Infrastructure Products Australia Pty Ltd
Most cited
By later US patents
- Method, apparatus and product for improved pipe-to-manhole sealing68US 3,958,313 AMerchants National Bank of Manchester · 1976
- Seal component for use in on-site poured concrete or plastic tank or box components of fluid distribution systems66US 5,711,536 ATuf-Tite, Inc. · 1998
- Method and apparatus for providing watertight seal for manhole pipe connection64US 4,387,900 AA-Lok Products, Inc. · 1983
- Flexible seal60US 4,426,095 AConcrete Pipe & Products Corp. · 1984
- Radially expandable locking sleeve device52US 4,478,437 APress-Seal Gasket Corporation · 1984