C09K 8/512
Containing cross-linking agents
Official title: containing cross-linking agents
C09K8/512 (Containing cross-linking agents) appears on 731 US grants and 568 published applications in this corpus.
Search patents in C09K- Granted patents
- 731
- Published applications
- 568
- Assignees
- 196
- Inventors
- 1,163
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 11 | 0 |
| 1988 | 16 | 0 |
| 1989 | 17 | 0 |
| 1990 | 25 | 0 |
| 1991 | 21 | 0 |
| 1992 | 16 | 0 |
| 1993 | 19 | 0 |
| 1994 | 11 | 0 |
| 1995 | 14 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 14 | 0 |
| 2001 | 11 | 2 |
| 2002 | 7 | 5 |
| 2003 | 9 | 17 |
| 2004 | 10 | 20 |
| 2005 | 13 | 24 |
| 2006 | 24 | 26 |
| 2007 | 14 | 24 |
| 2008 | 8 | 19 |
| 2009 | 8 | 21 |
| 2010 | 20 | 24 |
| 2011 | 21 | 26 |
| 2012 | 17 | 17 |
| 2013 | 13 | 20 |
| 2014 | 14 | 38 |
| 2015 | 19 | 19 |
| 2016 | 13 | 31 |
| 2017 | 22 | 30 |
| 2018 | 31 | 29 |
| 2019 | 31 | 27 |
| 2020 | 35 | 30 |
| 2021 | 34 | 26 |
| 2022 | 23 | 33 |
| 2023 | 32 | 18 |
| 2024 | 28 | 13 |
| 2025 | 12 | 11 |
| 2026 | 4 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods of sealing a water-bearing formation using a volcanic ash sealant composition18 Aug 2026US 12,709,705 B2Saudi Arabian Oil Company
- Temperature-resistant and salt-tolerant in-situ plugging enhanced gel compositions, gels, preparation methods and applications12 May 2026US 12,624,275 B1China University of Petroleum-Beijing
- Wellbore fluids including fluid loss materials comprising a polymer and a bridging material and related methods24 Feb 2026US 12,559,667 B2Schlumberger Technology Corporation
- Re-crosslinkable hyper-branched polymer gels based on a transamidation reaction27 Jan 2026US 12,534,663 B2The Curators of the University of Missouri
- Method and composition for subsurface well intervention to reduce well fluid loss11 Nov 2025US 12,466,987 B2RheoVest, LLC
- Sand consolidation with thermal responsive polymers1 Oct 2026US 2026/0297417 A1ChampionX LLC
- Method for modifying the permeability of a geological formation zone20 Aug 2026US 2026/0243145 A1
- Plugging agent composition and use thereof, and hydrocarbon reservoir plugging method6 Aug 2026US 2026/0226339 A1China Petroleum & Chemical Corporation
- Methods of sealing a water-bearing formation using a red mud9 Jul 2026US 2026/0193486 A1Saudi Arabian Oil Company
- Methods of sealing a water-bearing formation using a volcanic ash sealant composition9 Jul 2026US 2026/0193515 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Composition and method for recovering hydrocarbon fluids from a subterranean reservoir203US 6,454,003 B1Ondeo Nalco Energy Services, L.P. · 2002
- Methods of consolidating formations or forming chemical casing or both while drilling188US 6,702,044 B2Halliburton Energy Services.Inc. · 2004
- Sealing subterranean zones175US 6,328,106 B1Halliburton Energy Services.Inc. · 2001
- Method and compositions for fracturing subterranean formations170US 4,470,915 AHalliburton Company · 1984
- Method and compositions for reducing the permeabilities of subterranean zones154US 6,196,317 B1Halliburton Energy Services.Inc. · 2001