C09K 8/508
Macromolecular compounds
Official title: macromolecular compounds {(C09K8/512 takes precedence)}
C09K8/508 (Macromolecular compounds) appears on 1,639 US grants and 1,459 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,639
- Published applications
- 1,459
- Assignees
- 391
- Inventors
- 2,449
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 10 | 0 |
| 1978 | 12 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 15 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 18 | 0 |
| 1988 | 23 | 0 |
| 1989 | 30 | 0 |
| 1990 | 28 | 0 |
| 1991 | 31 | 0 |
| 1992 | 19 | 0 |
| 1993 | 22 | 0 |
| 1994 | 21 | 0 |
| 1995 | 21 | 0 |
| 1996 | 13 | 0 |
| 1997 | 15 | 0 |
| 1998 | 19 | 0 |
| 1999 | 22 | 0 |
| 2000 | 24 | 0 |
| 2001 | 18 | 4 |
| 2002 | 18 | 8 |
| 2003 | 20 | 32 |
| 2004 | 17 | 38 |
| 2005 | 19 | 62 |
| 2006 | 43 | 59 |
| 2007 | 30 | 50 |
| 2008 | 26 | 42 |
| 2009 | 24 | 51 |
| 2010 | 51 | 45 |
| 2011 | 49 | 63 |
| 2012 | 36 | 48 |
| 2013 | 30 | 39 |
| 2014 | 42 | 64 |
| 2015 | 40 | 46 |
| 2016 | 31 | 67 |
| 2017 | 50 | 71 |
| 2018 | 65 | 111 |
| 2019 | 95 | 114 |
| 2020 | 110 | 97 |
| 2021 | 106 | 97 |
| 2022 | 86 | 72 |
| 2023 | 80 | 55 |
| 2024 | 77 | 50 |
| 2025 | 47 | 37 |
| 2026 | 23 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Elastomeric wellbore seal with silicon-based polymer29 Sep 2026US 12,747,384 B2Halliburton Energy Services.Inc.
- Sealant compositions comprising red mud, subterranean operation fluids thereof, and related methods15 Sep 2026US 12,735,624 B1Saudi Arabian Oil Company
- Thixotropic slurry with enhanced reliability for use in a wellbore8 Sep 2026US 12,729,335 B2Halliburton Energy Services.Inc.
- Methods of sealing a water-bearing formation using a volcanic ash sealant composition18 Aug 2026US 12,709,705 B2Saudi Arabian Oil Company
- Methods for sealing high-permeability zones in subterranean formations28 Jul 2026US 12,692,430 B1Saudi Arabian Oil Company
- Sand consolidation with thermal responsive polymers1 Oct 2026US 2026/0297417 A1ChampionX LLC
- Process for preparing an oil-well cement slurry24 Sep 2026US 2026/0286209 A1Oil and Natural Gas Corporation Limited
- Freshwater based drilling fluids using a crosslinked starch24 Sep 2026US 2026/0286210 A1Baker Hughes Oilfield Operations LLC
- Method for modifying the permeability of a subterranean formation and related treatment fluid used in said method20 Aug 2026US 2026/0242657 A1ENI S. p. A.
- Method for modifying the permeability of a geological formation zone20 Aug 2026US 2026/0243145 A1
Most cited
By later US patents
- Control of particulate flowback in subterranean wells341US 5,833,000 AHalliburton Energy Services.Inc. · 1998
- 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
- Water based compositions for sealing subterranean zones and methods278US 6,258,757 B1Halliburton Energy Services.Inc. · 2001
- Methods of sealing subterranean zones265US 5,913,364 AHalliburton Energy Services.Inc. · 1999