C09K 8/805
Coated proppants
Official title: {Coated proppants}
C09K8/805 (Coated proppants) appears on 828 US grants and 1,024 published applications in this corpus.
Search patents in C09K- Granted patents
- 828
- Published applications
- 1,024
- Assignees
- 209
- Inventors
- 1,148
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 3 |
| 2003 | 4 | 7 |
| 2004 | 10 | 19 |
| 2005 | 5 | 28 |
| 2006 | 14 | 23 |
| 2007 | 15 | 24 |
| 2008 | 13 | 29 |
| 2009 | 11 | 30 |
| 2010 | 24 | 30 |
| 2011 | 33 | 36 |
| 2012 | 28 | 47 |
| 2013 | 20 | 31 |
| 2014 | 17 | 60 |
| 2015 | 38 | 66 |
| 2016 | 37 | 110 |
| 2017 | 64 | 99 |
| 2018 | 97 | 104 |
| 2019 | 86 | 73 |
| 2020 | 62 | 59 |
| 2021 | 59 | 41 |
| 2022 | 37 | 32 |
| 2023 | 39 | 25 |
| 2024 | 28 | 25 |
| 2025 | 16 | 16 |
| 2026 | 9 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for hydraulic fracturing of conventional and unconventional reservoirs by introducing energized fluid8 Sep 2026US 12,729,617 B2Schlumberger Technology Corporation
- Curing accelerant for proppant coating and methods of use1 Sep 2026US 12,723,190 B2chlumberger Technology Corporation
- Electro-hydrofracturing using electrically conductive proppants and related methods14 Jul 2026US 12,680,014 B2Eden GeoPower, Inc.
- Methods for producing hydrocarbon fluids with reduced water-oil ratio by utilizing oil-wet petroleum coke proppant particles during hydraulic fracturing9 Jun 2026US 12,650,066 B2ExxonMobil Technology and Engineering Company
- Electrically conductive proppant and methods for detecting, locating and characterizing the electrically conductive proppant2 Jun 2026US 12,644,042 B2Carbo Ceramics Inc.
- Electrically conductive proppant and methods for detecting, locating and characterizing the electrically conductive proppant24 Sep 2026US 2026/0286214 A1Carbo Ceramics Inc.
- Compositions and methods for use of proppant surface chemistry to improve proppant consolidation and flowback control24 Sep 2026US 2026/0286824 A1Carbo Ceramics Inc.
- Methods for producing hydrocarbon fluids with reduced water-oil ratio by utilizing oil-wet petroleum coke proppant particles during hydraulic fracturing17 Sep 2026US 2026/0275850 A1ExxonMobil Technology and Engineering Company
- Composition and process for pelletizing carbon-based materials for proppant and industrial applications30 Apr 2026US 2026/0115677 A1Carbo Ceramics Inc.
- Composite diversion particle agglomeration26 Mar 2026US 2026/0085229 A1Carbo Ceramics Inc.
Most cited
By later US patents
- Control of particulate flowback in subterranean wells341US 5,833,000 AHalliburton Energy Services.Inc. · 1998
- Formation treatment method using deformable particles336US 6,059,034 ABJ Services Company · 2000
- Control of fine particulate flowback in subterranean wells335US 5,853,048 AHalliburton Energy Services, Inc. · 1998
- Control of particulate flowback in subterranean wells303US 6,047,772 AHalliburton Energy Services.Inc. · 2000
- Composite proppant, composite filtration media and methods for making and using same288US 6,632,527 B1Borden Chemical, Inc. · 2003