C09K 8/528
Inorganic depositions
Official title: inorganic depositions, e.g. sulfates or carbonates
C09K8/528 (Inorganic depositions) appears on 934 US grants and 954 published applications in this corpus.
Search patents in C09K- Granted patents
- 934
- Published applications
- 954
- Assignees
- 308
- Inventors
- 1,843
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 9 | 0 |
| 1985 | 9 | 0 |
| 1986 | 11 | 0 |
| 1987 | 12 | 0 |
| 1988 | 15 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 17 | 0 |
| 1992 | 17 | 0 |
| 1993 | 19 | 0 |
| 1994 | 20 | 0 |
| 1995 | 13 | 0 |
| 1996 | 10 | 0 |
| 1997 | 10 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 0 |
| 2002 | 6 | 5 |
| 2003 | 5 | 10 |
| 2004 | 1 | 4 |
| 2005 | 5 | 10 |
| 2006 | 6 | 2 |
| 2007 | 7 | 11 |
| 2008 | 7 | 19 |
| 2009 | 3 | 20 |
| 2010 | 14 | 16 |
| 2011 | 11 | 20 |
| 2012 | 13 | 27 |
| 2013 | 18 | 35 |
| 2014 | 18 | 40 |
| 2015 | 24 | 42 |
| 2016 | 21 | 71 |
| 2017 | 39 | 87 |
| 2018 | 52 | 80 |
| 2019 | 67 | 65 |
| 2020 | 62 | 60 |
| 2021 | 57 | 58 |
| 2022 | 64 | 58 |
| 2023 | 59 | 69 |
| 2024 | 60 | 55 |
| 2025 | 47 | 49 |
| 2026 | 31 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dissolution of manganese oxides in a wellbore15 Sep 2026US 12,735,625 B2Halliburton Energy Services.Inc.
- Odor management for disulfide solvents and surfaces contacted therewith8 Sep 2026US 12,729,337 B2ExxonMobil Technology and Engineering Company
- Extended- and multimodal-release compositions25 Aug 2026US 12,715,801 B2Finoric, LLC
- Aqueous modified acid compositions and methods of using the same25 Aug 2026US 12,716,021 B2Dorf Ketal Chemicals Fze
- Method for single-stage treatment of siliceous subterranean formations25 Aug 2026US 12,716,022 B2Schlumberger Technology Corporation
- Particulate compositions for iron sulfide remediation1 Oct 2026US 2026/0297419 A1ChampionX LLC
- Freshwater based drilling fluids using a crosslinked starch24 Sep 2026US 2026/0286210 A1Baker Hughes Oilfield Operations LLC
- Methods and compositions for squeeze life enhancement10 Sep 2026US 2026/0265601 A1ChampionX LLC
- Scale inhibitor composition and methods of using the same for treating scale in a wellbore20 Aug 2026US 2026/0242658 A1Saudi Arabian Oil Company
- Polyalkyl phosphonated polyol ether based scale inhibitors13 Aug 2026US 2026/0234464 A1ChampionX LLC
Most cited
By later US patents
- Composition and method for sweetening hydrocarbons161US 4,978,512 AQuaker Chemical Corporation · 1990
- Method of treating sour gas and liquid hydrocarbon160US 5,674,377 ANalco/Exxon Energy Chemicals, L. P. · 1997
- Method and composition for removing filter cake119US 7,855,168 B2Schlumberger Technology Corporation · 2010
- Mixtures of hexahydrotriazines useful as H.sub.2 S scavengers115US 5,347,004 ABaker Hughes Incorporated · 1994
- Process for mitigation of wellbore contaminants107US 6,942,037 B1Clariant Finance (BVI) Limited · 2005