C08G 18/28
Characterised by the compounds used containing active hydrogen
Official title: characterised by the compounds used containing active hydrogen
C08G18/28 (Characterised by the compounds used containing active hydrogen) appears on 19,359 US grants and 17,872 published applications in this corpus.
Search patents in C08G- Granted patents
- 19,359
- Published applications
- 17,872
- Assignees
- 4,225
- Inventors
- 33,678
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 255 | 0 |
| 1977 | 243 | 0 |
| 1978 | 294 | 0 |
| 1979 | 214 | 0 |
| 1980 | 264 | 0 |
| 1981 | 344 | 0 |
| 1982 | 228 | 0 |
| 1983 | 240 | 0 |
| 1984 | 315 | 0 |
| 1985 | 304 | 0 |
| 1986 | 272 | 0 |
| 1987 | 299 | 0 |
| 1988 | 330 | 0 |
| 1989 | 354 | 0 |
| 1990 | 275 | 0 |
| 1991 | 381 | 0 |
| 1992 | 425 | 0 |
| 1993 | 348 | 0 |
| 1994 | 344 | 0 |
| 1995 | 257 | 0 |
| 1996 | 322 | 0 |
| 1997 | 354 | 0 |
| 1998 | 393 | 0 |
| 1999 | 409 | 0 |
| 2000 | 372 | 0 |
| 2001 | 362 | 102 |
| 2002 | 431 | 425 |
| 2003 | 441 | 611 |
| 2004 | 360 | 653 |
| 2005 | 263 | 579 |
| 2006 | 339 | 598 |
| 2007 | 237 | 596 |
| 2008 | 199 | 582 |
| 2009 | 205 | 652 |
| 2010 | 332 | 758 |
| 2011 | 342 | 707 |
| 2012 | 392 | 709 |
| 2013 | 461 | 711 |
| 2014 | 558 | 719 |
| 2015 | 545 | 743 |
| 2016 | 539 | 730 |
| 2017 | 579 | 775 |
| 2018 | 537 | 764 |
| 2019 | 611 | 866 |
| 2020 | 609 | 974 |
| 2021 | 610 | 985 |
| 2022 | 531 | 1025 |
| 2023 | 580 | 799 |
| 2024 | 591 | 777 |
| 2025 | 528 | 592 |
| 2026 | 341 | 440 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08G 18/40High-molecular-weight compounds14,149
- C08G 18/30Low-molecular-weight compounds6,543
- C08G 18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen3,790
- C08G 18/67Unsaturated compounds having active hydrogen2,919
- C08G 18/2805Compounds having only one group containing active hydrogen2,259
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- Recycleable bioplastics, methods of manufacture thereof and articles comprising the same8 Oct 2026US 2026/0308306 A1University of Connecticut
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Most cited
By later US patents
- Radiation-curable coating compounds1,477US 6,605,669 B2E. I. Du Pont de Nemours and Company · 2003
- Process for preparing amide acetals1,464US 7,439,354 B2E. I. Du Pont de Nemours and Company · 2008
- Wound dressing materials1,148US 4,233,969 A1980
- Fast curing compositions996US 6,894,140 B2Tyco Healthecare Gropu LP · 2005
- At least partially resorbable reticulated elastomeric matrix elements and methods of making same952US 9,050,176 B2Biomerix Corporation · 2015