C02F 11/145
Using calcium compounds
Official title: using calcium compounds
C02F11/145 (Using calcium compounds) appears on 85 US grants and 109 published applications in this corpus.
Search patents in C02F- Granted patents
- 85
- Published applications
- 109
- Assignees
- 76
- Inventors
- 238
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 3 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 6 |
| 2007 | 0 | 0 |
| 2008 | 3 | 3 |
| 2009 | 1 | 4 |
| 2010 | 3 | 5 |
| 2011 | 0 | 2 |
| 2012 | 3 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 7 |
| 2015 | 2 | 2 |
| 2016 | 0 | 4 |
| 2017 | 2 | 2 |
| 2018 | 7 | 11 |
| 2019 | 2 | 7 |
| 2020 | 7 | 8 |
| 2021 | 4 | 8 |
| 2022 | 5 | 12 |
| 2023 | 6 | 3 |
| 2024 | 2 | 10 |
| 2025 | 11 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Use of a hydraulic binder containing calcium aluminate for the production of a construction material12 May 2026US 12,623,963 B2ARDEX Group GmbH
- Method for treating waters, sediments and/or sludges24 Feb 2026US 12,559,400 B2OASE GmbH
- Method of dewatering11 Nov 2025US 12,466,752 B2Synata Bio, Inc.
- Wastewater treatment system and method for producing sludge for cement manufacturing16 Sep 2025US 12,415,753 B2Alden Group Environmental Solutions, LLC
- Deposition of flocculated tailings5 Aug 2025US 12,378,146 B2SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project as such owners exist now and in the future
- Calcined clay tailings and/or calcined mine waste, and associated systems and methods26 Feb 2026US 2026/0055324 A1Graymont Western Canada Inc.
- Geotechnical characteristics of tailings via lime addition25 Dec 2025US 2025/0388498 A1Graymont Western Canada Inc.
- Wastewater and sludge treatment device and method21 Aug 2025US 2025/0263323 A1Ariel Scientific Innovations Ltd.
- Method for treating waste waters and residue sludge by means of decarbonation in a chemical installation for nitridation in a molten salt bath10 Jul 2025US 2025/0223213 A1Hydromecanique Et Frottement
- Method of sludge pretreatment for improved digestibility and reduced scaling26 Dec 2024US 2024/0425400 A1The Governors of the University of Alberta
Most cited
By later US patents
- Process and apparatus for pathogen reduction in waste83US 5,013,458 ARDP Company · 1991
- Conditioning method for dehydrating clarification sludge47US 6,368,511 B1Bayer Aktiengesellschaft · 2002
- Methods for treating wastewater sludge39US 6,406,510 B1Unified Environmental Services Group, LLC · 2002
- Process for pathogen reduction in waste36US 5,229,011 A1993
- Process for treating a waste sludge of biological solids35US 5,635,069 A1997