C09K 8/467
Containing additives for specific purposes
Official title: containing additives for specific purposes
C09K8/467 (Containing additives for specific purposes) appears on 1,585 US grants and 1,740 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,585
- Published applications
- 1,740
- Assignees
- 310
- Inventors
- 2,041
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 12 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 11 | 0 |
| 1993 | 10 | 0 |
| 1994 | 14 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 12 | 4 |
| 2002 | 12 | 5 |
| 2003 | 13 | 23 |
| 2004 | 17 | 36 |
| 2005 | 19 | 46 |
| 2006 | 44 | 73 |
| 2007 | 43 | 59 |
| 2008 | 51 | 71 |
| 2009 | 36 | 47 |
| 2010 | 62 | 63 |
| 2011 | 35 | 72 |
| 2012 | 45 | 85 |
| 2013 | 61 | 78 |
| 2014 | 71 | 105 |
| 2015 | 46 | 75 |
| 2016 | 67 | 79 |
| 2017 | 76 | 104 |
| 2018 | 77 | 115 |
| 2019 | 113 | 120 |
| 2020 | 118 | 99 |
| 2021 | 102 | 76 |
| 2022 | 72 | 60 |
| 2023 | 82 | 64 |
| 2024 | 66 | 75 |
| 2025 | 62 | 53 |
| 2026 | 46 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process of making sulfonated lignin-based compositions, sulfonated lignin-based compositions so-obtained and their use29 Sep 2026US 12,747,259 B2Rg Dispersants Ltd.
- Deflocculation additives for wellbore servicing fluid additives15 Sep 2026US 12,735,620 B2Halliburton Energy Services.Inc.
- Methods of servicing a wellbore using a volcanic ash sealant composition15 Sep 2026US 12,735,621 B2Saudi Arabian Oil Company
- Methods of sealing a water-bearing formation using a red mud sealant composition15 Sep 2026US 12,735,622 B2Saudi Arabian Oil Company
- Core-shell particles for subterranean operations15 Sep 2026US 12,735,623 B2Halliburton Energy Services.Inc.
- High temperature universal fluids and methods and systems related thereto1 Oct 2026US 2026/0297415 A1Aramco Services Company
- Formulation for abandoning oil wells and process for producing said formulation24 Sep 2026US 2026/0286208 A1Petroleo Brasileiro S.A. - Petrobras
- Synergistic approach to develop resilient cement systems for long term wellbore integrity of oil, gas and geothermal wells17 Sep 2026US 2026/0275183 A1Saudi Arabian Oil Company
- Geopolymer cementing composition3 Sep 2026US 2026/0258293 A1King Fahd University of Petroleum and Minerals
- Method and tool for cementing wellbore13 Aug 2026US 2026/0235012 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Foamed well cement slurries, additives and methods302US 6,063,738 AHalliburton Energy Services.Inc. · 2000
- Well cementing compositions and methods244US 6,457,524 B1Halliburton Energy Services.Inc. · 2002
- Hydrolytically stable polymers for use in oil field cementing methods and compositions237US 4,555,269 AHalliburton Company · 1985
- Method of reducing fluid loss in cement compositions which may contain substantial salt concentrations203US 4,676,317 AHalliburton Company · 1987
- Hydrolytically stable polymers for use in oil field cementing methods and compositions195US 4,515,635 AHalliburton Company · 1985