C09K 8/685
Containing cross-linking agents
Official title: {containing cross-linking agents}
C09K8/685 (Containing cross-linking agents) appears on 851 US grants and 891 published applications in this corpus.
Search patents in C09K- Granted patents
- 851
- Published applications
- 891
- Assignees
- 228
- Inventors
- 1,221
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 10 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 11 | 0 |
| 1988 | 10 | 0 |
| 1989 | 10 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 20 | 0 |
| 1994 | 5 | 0 |
| 1995 | 13 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 19 | 2 |
| 2002 | 9 | 10 |
| 2003 | 10 | 23 |
| 2004 | 13 | 25 |
| 2005 | 12 | 29 |
| 2006 | 26 | 35 |
| 2007 | 18 | 31 |
| 2008 | 15 | 36 |
| 2009 | 10 | 43 |
| 2010 | 33 | 41 |
| 2011 | 29 | 34 |
| 2012 | 26 | 42 |
| 2013 | 28 | 41 |
| 2014 | 31 | 53 |
| 2015 | 31 | 54 |
| 2016 | 26 | 79 |
| 2017 | 48 | 72 |
| 2018 | 50 | 67 |
| 2019 | 56 | 48 |
| 2020 | 45 | 42 |
| 2021 | 35 | 29 |
| 2022 | 36 | 18 |
| 2023 | 28 | 13 |
| 2024 | 11 | 8 |
| 2025 | 10 | 10 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low concentration synthetic polymer fracturing fluid with ascorbic acid26 May 2026US 12,637,610 B2Beijing Huamei, Inc.
- Gel-based subterranean formation hardening compositions and methods thereof14 Apr 2026US 12,600,899 B1King Fahd University of Petroleum and Minerals
- Methods and compositions for thermally shocking subsurface formations10 Mar 2026US 12,571,291 B1King Fahd University of Petroleum and Minerals
- Method and compositions for stimulating subterranean formations10 Feb 2026US 12,545,831 B2King Fahd University of Petroleum and Minerals
- Compositions for enhancing viscosity of subterranean fluids utilizing chelating agents3 Feb 2026US 12,540,271 B2King Fahd University of Petroleum and Minerals
- Porous polymeric material and filtration device6 Aug 2026US 2026/0226815 A1Baker Hughes Oilfield Operations LLC
- Methods and compositions for thermally shocking subsurface formations9 Jul 2026US 2026/0193970 A1King Fahd University of Petroleum and Minerals
- High-temperature foam fracturing fluid with synthetic polymer14 May 2026US 2026/0132330 A1Schlumberger Technology Corporation
- Method of hydraulic fracturing utilizing a hydraulic fracturing fluid with a single phase liquid proppant16 Apr 2026US 2026/0103634 A1Beijing Huamei, Inc.
- Compositions for in situ fluid gelation for far-field fracture control19 Mar 2026US 2026/0078298 A1Chevron U.S.A.Inc.
Most cited
By later US patents
- Formation treatment method using deformable particles341US 6,330,916 B1BJ Services Company · 2001
- Vascularized perfused microtissue/micro-organ arrays324US 6,197,575 B1Massachusetts Institute of Technology · 2001
- Fracturing process and composition294US 6,599,863 B1Schlumberger Technology Corporation · 2003
- Resin composition and methods of consolidating particulate solids in wells with or without closure pressure258US 6,311,773 B1Halliburton Energy Services.Inc. · 2001
- Subterranean formation treating fluid concentrates, treating fluids and methods250US 6,488,091 B1Halliburton Energy Services.Inc. · 2002