E21D 11/383
By applying waterproof flexible sheets
Official title: {by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall}
E21D11/383 (By applying waterproof flexible sheets) appears on 38 US grants and 34 published applications in this corpus.
Search patents in E21D- Granted patents
- 38
- Published applications
- 34
- Assignees
- 31
- Inventors
- 87
- Latest grant
- 23 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 4 |
| 2004 | 3 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 0 | 2 |
| 2018 | 4 | 2 |
| 2019 | 3 | 3 |
| 2020 | 1 | 2 |
| 2021 | 4 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for waterproofing of tunnel structures23 Apr 2024US 11,965,421 B2Sika Technology AG
- Method of installing fiber liner for large tunnel repair21 Dec 2021US 11,203,932 B2Warren Environmental & Coating, LLC
- Hydraulic end die of tunnel secondary lining trolley and construction method therefor24 Aug 2021US 11,098,585 B2China Railway No. 8 Engineering Group Co., Ltd.
- In-situ barrier device with internal injection conduit27 Jul 2021US 11,073,017 B2
- Waterproofing system9 Feb 2021US 10,914,063 B2Sika Technology AG
- Waterproof membrane, preparation method and construction method thereof, and tunnel waterproof system11 Apr 2024US 2024/0117134 A1Beijing Oriental Yuhong Waterproof Technology Co. Ltd.
- Method for waterproofing of tunnel structures2 Jun 2022US 2022/0170369 A1Sika Technology AG
- Hydraulic end die of tunnel secondary lining trolley and construction method therefor15 Apr 2021US 2021/0108515 A1China Railway No. 8 Engineering Group Co., Ltd.
- In-situ barrier device with internal injection conduit23 Jul 2020US 2020/0232322 A1GCP Applied Technologies Inc.
- Method of installing fiber liner for large tunnel repair13 Feb 2020US 2020/0049005 A1Warren Environmental & Coating, LLC
Most cited
By later US patents
- Method of lining a pipe194US 4,009,063 AInsituform (Pipes & Structures) Ltd. · 1977
- Process for making silicon carbide reinforced silicon carbide composite57US 5,840,221 ASaint-Gobain/Norton Industrial Ceramics Corporation · 1998
- Lined cavity in the earth42US 4,239,416 APirelli Furlanis Applicazioni Indrauliche · 1980
- Silicon carbide reinforced silicon carbide composite33US 6,245,424 B1Saint-Gobain Industrial Ceramics, Inc. · 2001
- Waterproofing system22US 10,914,063 B2Sika Technology AG · 2021