C09K 8/52
Compositions for preventing, limiting or eliminating depositions
Official title: Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
C09K8/52 (Compositions for preventing, limiting or eliminating depositions) appears on 2,416 US grants and 2,647 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,416
- Published applications
- 2,647
- Assignees
- 651
- Inventors
- 4,172
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 13 | 0 |
| 1985 | 11 | 0 |
| 1986 | 16 | 0 |
| 1987 | 22 | 0 |
| 1988 | 23 | 0 |
| 1989 | 21 | 0 |
| 1990 | 9 | 0 |
| 1991 | 30 | 0 |
| 1992 | 31 | 0 |
| 1993 | 26 | 0 |
| 1994 | 23 | 0 |
| 1995 | 30 | 0 |
| 1996 | 18 | 0 |
| 1997 | 24 | 0 |
| 1998 | 27 | 0 |
| 1999 | 26 | 0 |
| 2000 | 34 | 0 |
| 2001 | 35 | 6 |
| 2002 | 26 | 23 |
| 2003 | 23 | 33 |
| 2004 | 22 | 56 |
| 2005 | 22 | 59 |
| 2006 | 32 | 70 |
| 2007 | 43 | 54 |
| 2008 | 39 | 82 |
| 2009 | 38 | 65 |
| 2010 | 68 | 100 |
| 2011 | 67 | 87 |
| 2012 | 45 | 107 |
| 2013 | 62 | 92 |
| 2014 | 71 | 120 |
| 2015 | 82 | 157 |
| 2016 | 81 | 196 |
| 2017 | 121 | 203 |
| 2018 | 145 | 175 |
| 2019 | 160 | 153 |
| 2020 | 155 | 151 |
| 2021 | 125 | 150 |
| 2022 | 140 | 119 |
| 2023 | 116 | 129 |
| 2024 | 125 | 104 |
| 2025 | 89 | 89 |
| 2026 | 51 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Contaminant remediation with functionalized (meth)acrylic polymer or copolymer macroparticulates and systems related thereto6 Oct 2026US 12,753,257 B2Countertrace LLC
- Method of improving injection pressure and asphaltene remediation6 Oct 2026US 12,753,337 B2
- Application of organic oxidizer and enzyme combination as breaker fluid for filter cake cleanup29 Sep 2026US 12,747,385 B2Schlumberger Technology Corporation
- 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
- Anti-fouling compositions for use in crude oil production and processing8 Oct 2026US 2026/0308441 A1Ecolab USA Inc.
- Formation Maintenance Fluids with Flowback Enhancers to Improve Wellbore Operations8 Oct 2026US 2026/0308442 A1Baker Hughes Oilfield Operations LLC
- 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 of making cross-linked pelletized chemicals17 Sep 2026US 2026/0275184 A1Carbo Ceramics Inc.
Most cited
By later US patents
- Encapsulated chemicals for use in controlled time release applications and methods314US 6,527,051 B1Halliburton Energy Services.Inc. · 2003
- Method for improving injectivity of fluids in oil reservoirs290US 5,632,336 ATexaco Inc. · 1997
- Encapsulated chemicals for use in controlled time release applications and methods279US 6,554,071 B1Halliburton Energy Services.Inc. · 2003
- Polymeric particles, their manufacture and uses265US 4,849,484 AAllied Colloids Limited · 1989
- Downhole chemical delivery system for oil and gas wells243US 6,279,656 B1Santrol, Inc. · 2001