E21D 9/002
Injection methods characterised by the chemical composition used
Official title: {Injection methods characterised by the chemical composition used}
E21D9/002 (Injection methods characterised by the chemical composition used) appears on 19 US grants and 9 published applications in this corpus.
Search patents in E21D- Granted patents
- 19
- Published applications
- 9
- Assignees
- 20
- Inventors
- 68
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and composition for limiting permeability of a matrix to limit liquid and gas inflow29 Apr 2025US 12,288,626 B2Relborn Party Ltd
- Hydrogel biocement systems and methods6 Oct 2020US 10,794,029 B2Arizona Board of Regents on behalf of Arizona State University
- Use of a composition for stabilizing a geological formation in oil fields, gas fields, water pumping fields, mining or tunnel constructions22 Sep 2020US 10,781,353 B2BASF SE
- Method for stabilizing irregular structures24 Aug 2004US 6,780,459 B2
- Method and apparatus for continuous production of quick-setting foamed cement grout with selectively adjustable proportions8 Sep 1998US 5,803,665 A
- Pressure-controlled tunnel directional grouting-based reinforcement devices16 Apr 2026US 2026/0103981 A1China University of Mining and Technology
- Economical high-strength quick-hardening grouting material and grouting reinforcement method for soft rock tunnel11 Mar 2021US 2021/0070660 A1Chang An University
- Admixture for preventing swelling of anhydrite containing rock material11 Feb 2021US 2021/0040847 A1ETH Zurich
- Method and composition for limiting permeability of a matrix to limit liquid and gas inflow11 Feb 2021US 2021/0043335 A1Relborgn Piy Ltd Triomviri Pty Ltd
- Hydrogel biocement systems and methods22 Aug 2019US 2019/0256770 A1Arizona Board of Regents on behalf of Arizona State University
Most cited
By later US patents
- Process for reinforcing geological formations48US 4,113,014 ABayer Aktiengesellschaft · 1978
- Process for stabilizing rock and coal formations by bonding these formations to themselves or other geological formations25US 4,452,551 ABASF SE · 1984
- Method of strengthening geological formations21US 4,715,746 ABayer Aktiengesellschaft · 1987
- Method and apparatus for grouting of tunnel liners19US 5,645,375 A1997
- Process for consolidating and sealing off geological and artificially deposited rock and earth formations13US 4,307,980 ABayer Aktiengesellschaft · 1981