C08G 18/487
Polyethers containing cyclic groups
Official title: {Polyethers containing cyclic groups}
C08G18/487 (Polyethers containing cyclic groups) appears on 323 US grants and 320 published applications in this corpus.
Search patents in C08G- Granted patents
- 323
- Published applications
- 320
- Assignees
- 206
- Inventors
- 1,002
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 4 | 8 |
| 2004 | 5 | 4 |
| 2005 | 5 | 15 |
| 2006 | 6 | 12 |
| 2007 | 2 | 17 |
| 2008 | 3 | 6 |
| 2009 | 0 | 9 |
| 2010 | 5 | 8 |
| 2011 | 4 | 8 |
| 2012 | 4 | 5 |
| 2013 | 10 | 14 |
| 2014 | 8 | 14 |
| 2015 | 9 | 15 |
| 2016 | 14 | 20 |
| 2017 | 13 | 14 |
| 2018 | 6 | 17 |
| 2019 | 11 | 16 |
| 2020 | 17 | 17 |
| 2021 | 7 | 14 |
| 2022 | 10 | 23 |
| 2023 | 11 | 25 |
| 2024 | 12 | 21 |
| 2025 | 21 | 8 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrophilic acrylic-modified polyurethane and method for preparing same, and water-based paint composition prepared therefrom and manufacturing method thereof22 Sep 2026US 12,742,036 B2Samyang Corporation
- Aziridinyl functional compound26 May 2026US 12,637,423 B2Covestro (Netherlands) B.V.
- Electronic devices and polymer blends for high frequency applications21 Apr 2026US 12,606,665 B2Avient Corporation
- Coating composition3 Mar 2026US 12,565,473 B2Covestro (Netherlands) B.V.
- Thermoplastic polyurethane compounds exhibiting enhanced stain resistance17 Feb 2026US 12,552,929 B2Avient Corporation
- Pre-treatment of polyether polyols or silicone polyether surfactants1 Oct 2026US 2026/0297240 A1Dow Global Technologies LLC
- Closed-cell water-blown rigid polyurethane foams and methods for their production20 Aug 2026US 2026/0242530 A1Covestro LLC
- Reinforced polyurethane rigid foam material and preparation method therefor13 Aug 2026US 2026/0234397 A1Jiangsu Yoke Technology Co., Ltd
- Aqueous polyurethane-polyurea dispersion16 Jul 2026US 2026/0201106 A1Covestro Deutschland AG
- Polyurethane foam-forming reaction mixtures, polyurethane foams formed therefrom, and methods for their production and use16 Jul 2026US 2026/0201107 A1Covestro LLC
Most cited
By later US patents
- Shape memory film239US 5,139,832 AMitsubishi Jukogyo Kabushiki Kaisha · 1992
- Process for the preparation of polyurethane rigid foams having a low thermal conductivity and their use80US 5,096,933 A1992
- Solid polymer electrolyte, battery and solid-state electric double layer capacitor using the same as well as processes for the manufacture thereof71US 5,597,661 AShowa Denko K. K. · 1997
- Method of preparing cyclodextrin-coated surfaces65US 4,917,956 AUop LLC · 1990
- Solid polymer electrolyte, battery and solid-state electric double layer capacitor using the same as well as processes for the manufacture thereof56US 5,665,490 AShowa Denko K. K. · 1997