C09K 17/18
Prepolymers
Official title: Prepolymers; Macromolecular compounds
C09K17/18 (Prepolymers) appears on 304 US grants and 297 published applications in this corpus.
Search patents in C09K- Granted patents
- 304
- Published applications
- 297
- Assignees
- 236
- Inventors
- 811
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 1 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 9 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 5 |
| 2003 | 6 | 7 |
| 2004 | 5 | 17 |
| 2005 | 5 | 13 |
| 2006 | 6 | 6 |
| 2007 | 4 | 5 |
| 2008 | 2 | 5 |
| 2009 | 5 | 4 |
| 2010 | 5 | 6 |
| 2011 | 5 | 13 |
| 2012 | 5 | 1 |
| 2013 | 4 | 10 |
| 2014 | 9 | 15 |
| 2015 | 10 | 18 |
| 2016 | 14 | 16 |
| 2017 | 3 | 10 |
| 2018 | 13 | 14 |
| 2019 | 12 | 15 |
| 2020 | 8 | 18 |
| 2021 | 9 | 15 |
| 2022 | 6 | 14 |
| 2023 | 9 | 21 |
| 2024 | 14 | 20 |
| 2025 | 8 | 16 |
| 2026 | 9 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polymeric material composition4 Aug 2026US 12,697,600 B2Upl Ltd
- Branched wetting agents for enhanced treatment of drought field conditions30 Jun 2026US 12,668,742 B2Milliken & Company
- Method for installing chemical polymer deep soil stabilization columns and sand columns2 Jun 2026US 12,644,049 B2Saudi Arabian Oil Company
- Fertilizer composition for reducing methane gas emission comprising ethephon and uses thereof19 May 2026US 12,630,765 B2Industry-Academic Cooperation Foundation Gyeongsang National University
- Complexated biomolecules for use in contaminated soil or groundwater cleanup21 Apr 2026US 12,606,678 B2BlueHalo, LLC
- Complexated biomolecules for use in contaminated soil or groundwater cleanup8 Oct 2026US 2026/0308334 A1BlueHalo, LLC
- Engineered biologic living materials and methods to make these via advanced manufacturing8 Oct 2026US 2026/0308451 A1
- Branched Wetting Agents for Enhanced Treatment of Drought Field Conditions9 Jul 2026US 2026/0193536 A1Milliken & Company
- Dust suppression composition and methods of use thereof14 May 2026US 2026/0132336 A1
- Spraying agent and resin sheet23 Apr 2026US 2026/0109803 A1artience Co., Ltd.
Most cited
By later US patents
- Water-absorbing, cellular, cross-linked polymers with improved distribution effect, method for their production and their use114US 6,750,262 B1BASF SE · 2004
- Method of consolidating porous formations using vinyl polymer sealer with divinylbenzene crosslinker100US 4,070,865 AHalliburton Company · 1978
- Oil well treating method and composition92US 4,366,071 AHalliburton Company · 1982
- Disposable absorbent articles containing particulate, free-flowing, insoluble swellable polymers87US 4,058,124 AUnion Carbide Corporation · 1977
- Oil well treating method and composition87US 4,366,074 AHalliburton Company · 1982