C08G 18/42
Polycondensates having carboxylic or carbonic ester groups in the main chain
C08G18/42 (Polycondensates having carboxylic or carbonic ester groups in the main chain) appears on 4,781 US grants and 5,832 published applications in this corpus.
Search patents in C08G- Granted patents
- 4,781
- Published applications
- 5,832
- Assignees
- 1,699
- Inventors
- 11,920
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 39 | 0 |
| 1977 | 33 | 0 |
| 1978 | 41 | 0 |
| 1979 | 33 | 0 |
| 1980 | 38 | 0 |
| 1981 | 48 | 0 |
| 1982 | 19 | 0 |
| 1983 | 33 | 0 |
| 1984 | 64 | 0 |
| 1985 | 61 | 0 |
| 1986 | 37 | 0 |
| 1987 | 57 | 0 |
| 1988 | 55 | 0 |
| 1989 | 76 | 0 |
| 1990 | 38 | 0 |
| 1991 | 58 | 0 |
| 1992 | 69 | 0 |
| 1993 | 37 | 0 |
| 1994 | 64 | 0 |
| 1995 | 40 | 0 |
| 1996 | 44 | 0 |
| 1997 | 51 | 0 |
| 1998 | 73 | 0 |
| 1999 | 76 | 0 |
| 2000 | 70 | 0 |
| 2001 | 86 | 21 |
| 2002 | 79 | 101 |
| 2003 | 104 | 125 |
| 2004 | 64 | 147 |
| 2005 | 59 | 127 |
| 2006 | 72 | 126 |
| 2007 | 56 | 161 |
| 2008 | 42 | 144 |
| 2009 | 46 | 198 |
| 2010 | 72 | 225 |
| 2011 | 89 | 232 |
| 2012 | 107 | 208 |
| 2013 | 151 | 217 |
| 2014 | 153 | 211 |
| 2015 | 174 | 232 |
| 2016 | 155 | 248 |
| 2017 | 174 | 259 |
| 2018 | 174 | 271 |
| 2019 | 199 | 335 |
| 2020 | 213 | 397 |
| 2021 | 244 | 354 |
| 2022 | 200 | 433 |
| 2023 | 225 | 318 |
| 2024 | 264 | 322 |
| 2025 | 208 | 232 |
| 2026 | 117 | 188 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08G 18/44Polycarbonates1,099
- C08G 18/4205Containing cyclic groups1,082
- C08G 18/4266Prepared from hydroxycarboxylic acids and/or lactones1,023
- C08G 18/4236Containing only aliphatic groups836
- C08G 18/46Having heteroatoms other than oxygen453
- C08G 18/4202Two or more polyesters of different physical or chemical nature395
- C08G 18/4244Containing oxygen in the form of ether groups367
- C08G 18/4288Modified by higher fatty oils or their acids or by resin acids304
All 12 subgroupsShow fewer
- C08G 18/4263Containing carboxylic acid groups122
- C08G 18/4291Prepared from polyester forming components containing monoepoxy compounds61
- C08G 18/4294Prepared from polyester forming components containing polyepoxy compounds45
- C08G 18/4297Prepared from polyester forming components containing aliphatic aldehyde condensates or hydrogenation products11
Recent patents
- Cover coating with good adhesion on polyurethane and polyurea membranes6 Oct 2026US 12,753,267 B2Sika Technology AG
- Thermoplastic polyurethane based polymeric electrolyte composition6 Oct 2026US 12,753,268 B2Huntsman International LLC
- Non-aqueous cross-linkable composition6 Oct 2026US 12,753,324 B2Allnex Resins (China) Co., Ltd.
- Polyol premixes, thermally insulating rigid polyurethane foams and methods for their production22 Sep 2026US 12,742,034 B2Covestro LLC
- Aqueous self-crosslinkable polyurethane dispersions22 Sep 2026US 12,742,035 B2BASF SE
- Resin composition, resin solution, and method for producing crosslinked coating film8 Oct 2026US 2026/0308304 A1Mitsubishi Gas Chemical Company, Inc.
- Lamination adhesive8 Oct 2026US 2026/0308430 A1Bostik SA
- Isocyanate-reactive compositions, rigid polyurethane foams and methods for their production24 Sep 2026US 2026/0286035 A1Covestro LLC
- Low residual momomer glycol aromatic polyester polyols24 Sep 2026US 2026/0286036 A1Stepan Company
- Composition and method for producing same, urethane resin, aqueous urethane resin dispersion, and coating agent24 Sep 2026US 2026/0286037 A1Tosoh Corporation
Most cited
By later US patents
- At least partially resorbable reticulated elastomeric matrix elements and methods of making same952US 9,050,176 B2Biomerix Corporation · 2015
- Hydrophilic and hydrophobic polyether polyurethanes and uses therefor530US 5,993,972 ATyndale Plains-Hunter, Ltd. · 1999
- Surface-modifying endgroups for biomedical polymers517US 5,589,563 AThe Polymer Technology Group · 1996
- Membranes of polyurethane based materials including polyester polyols423US 6,013,340 ANIKE, Inc. · 2000
- Polysiloxane-polylactone block copolymers397US 5,235,003 AThoratec Laboratories Corporation · 1993