C04B 18/049
Wastes from oil or other wells
Official title: {Wastes from oil or other wells, e.g. drilling mud}
C04B18/049 (Wastes from oil or other wells) appears on 27 US grants and 27 published applications in this corpus.
Search patents in C04B- Granted patents
- 27
- Published applications
- 27
- Assignees
- 21
- Inventors
- 76
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 0 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 3 | 2 |
| 2022 | 0 | 1 |
| 2023 | 2 | 2 |
| 2024 | 4 | 4 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Calcined clay tailings and/or calcined mine waste, and associated systems and methods29 Jul 2025US 12,371,622 B2Graymont Western Canada Inc.
- Systems and methods for producing wellbore fluids15 Oct 2024US 12,116,860 B1Exero Well Integrity
- Waste to energy ash and engineered aggregate in road construction17 Sep 2024US 12,091,827 B2University of Florida Research Foundation, Inc.
- Methods for re-using industrial waste for carbon sequestration and magnesium-based cements20 Feb 2024US 11,905,214 B2ZS2 Technologies Ltd.
- Waste to energy ash and engineered aggregate in road construction2 Jan 2024US 11,859,355 B2University of Florida Research Foundation, Inc.
- Calcined clay tailings and/or calcined mine waste, and associated systems and methods26 Feb 2026US 2026/0055324 A1Graymont Western Canada Inc.
- Utilization of petroleum coke in cementitious materials15 May 2025US 2025/0154062 A1Saudi Arabian Oil Company
- Systems and methods for producing wellbore fluids17 Oct 2024US 2024/0344419 A1Exero Well Integrity
- Alkaline activated cement methods and compositions20 Jun 2024US 2024/0199487 A1Material. Evolution Ltd.
- Waste to energy ash and engineered aggregate in road construction14 Mar 2024US 2024/0084521 A1University of Florida Research Foundation, Inc.
Most cited
By later US patents
- Universal fluids for drilling and cementing wells220US 5,464,060 AShell Oil Company · 1995
- Solidification of water based muds198US 5,058,679 AShell Oil Company · 1991
- Drilling and cementing with blast furnace slag/soluble/insoluble alcohol129US 5,358,044 AShell Oil Company · 1994
- Method for conversion of oil-base mud to oil mud-cement109US 5,213,160 AShell Oil Company · 1993
- Conversion of oil-base mud to oil mud-cement96US 5,382,290 AShell Oil Company · 1995