E02D 29/128
Repairs of manhole shafts
Official title: {Repairs of manhole shafts}
E02D29/128 (Repairs of manhole shafts) appears on 54 US grants and 48 published applications in this corpus.
Search patents in E02D- Granted patents
- 54
- Published applications
- 48
- Assignees
- 20
- Inventors
- 49
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 6 |
| 2013 | 2 | 2 |
| 2014 | 5 | 8 |
| 2015 | 3 | 3 |
| 2016 | 2 | 4 |
| 2017 | 5 | 5 |
| 2018 | 3 | 3 |
| 2019 | 5 | 1 |
| 2020 | 2 | 5 |
| 2021 | 2 | 1 |
| 2022 | 3 | 2 |
| 2023 | 3 | 0 |
| 2024 | 2 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liner and inflation bladder offset securement system and method3 Mar 2026US 12,565,751 B2McNeil Technologies, Inc
- Lining tube for restoring defective sewer shafts and method for producing and installing such a tube1 Jul 2025US 12,345,010 B2Brandenburger Liner GmbH & Co. KG
- Lining tube for restoring defective sewer shafts including a berm and a channel, and method for producing same, and method for lining a defective sewer shaft22 Apr 2025US 12,281,742 B2Brandenburger Liner GmbH & Co. KG
- Method of rehabilitating a manhole15 Oct 2024US 12,116,749 B2Hydro-Klean, LLC
- Method for manhole riser extensions2 Jul 2024US 12,024,845 B2
- Lining tube for restoring defective sewer shafts including a berm and a channel, and method for producing same, and method for lining a defective sewer shaft30 Jan 2025US 2025/0035247 A1Brandenburger Liner GmbH & Co. KG
- Liner and inflation bladder offset securement system and method21 Nov 2024US 2024/0384494 A1McNeil Technologies, Inc
- Lining tube for restoring defective sewer shafts and method for producing and installing such a tube11 Apr 2024US 2024/0117587 A1Brandenburger Liner GmbH & Co. KG
- Method of rehabilitating a manhole4 Jan 2024US 2024/0003115 A1Hydro-Klean, LLC
- Method for manhole riser extensions22 Dec 2022US 2022/0403615 A1
Most cited
By later US patents
- Method for repairing manholes or wetwalls46US 5,106,440 A1992
- Method of rehabilitating manholes by custom lining/relining37US 5,002,438 A1991
- System and method for rehabilitating a manhole, and manhole rehabilitated thereby32US 5,265,981 A1993
- Method and apparatus for inflating and curing a resin impregnated manhole liner26US 5,490,744 A1996
- Method of repairing a manhole chimney using a stretchable sleeve26US 7,670,086 B2Lmk Enterprises, Inc. · 2010