C08L 39/06
Homopolymers or copolymers of n-vinyl-pyrrolidones
Official title: Homopolymers or copolymers of N-vinyl-pyrrolidones
C08L39/06 (Homopolymers or copolymers of n-vinyl-pyrrolidones) appears on 309 US grants and 396 published applications in this corpus.
Search patents in C08L- Granted patents
- 309
- Published applications
- 396
- Assignees
- 269
- Inventors
- 1,049
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 6 |
| 2003 | 2 | 8 |
| 2004 | 3 | 6 |
| 2005 | 5 | 11 |
| 2006 | 2 | 11 |
| 2007 | 0 | 11 |
| 2008 | 6 | 9 |
| 2009 | 3 | 12 |
| 2010 | 7 | 13 |
| 2011 | 11 | 21 |
| 2012 | 16 | 14 |
| 2013 | 8 | 12 |
| 2014 | 8 | 8 |
| 2015 | 8 | 13 |
| 2016 | 6 | 18 |
| 2017 | 7 | 19 |
| 2018 | 17 | 22 |
| 2019 | 14 | 32 |
| 2020 | 21 | 28 |
| 2021 | 17 | 38 |
| 2022 | 24 | 27 |
| 2023 | 16 | 22 |
| 2024 | 17 | 9 |
| 2025 | 17 | 16 |
| 2026 | 10 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composition comprising a comb copolymer1 Sep 2026US 12,723,152 B2BYK-Chemie GmbH
- Aqueous compositions and inkjet receiving media1 Sep 2026US 12,723,170 B2Eastman Kodak Company
- Hydrophilic coatings for medical devices23 Jun 2026US 12,661,434 B2Hollister Incorporated
- Piezoceramic pastes with high ceramic content and method for printing same12 May 2026US 12,624,228 B2
- Heat-resistant implantable polymer microneedle and preparation method therefor and application thereof5 May 2026US 12,616,824 B2Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences
- Diffusion resistance layer for analyte sensors8 Oct 2026US 2026/0309670 A1DexCom, Inc.
- Hydrogel composition and hydrogel lens6 Aug 2026US 2026/0224478 A1Pegavision Corporation
- Method for manufacturing composite fine particles18 Jun 2026US 2026/0167799 A1Sharp Display Technology Corporation
- Water soluble composition, method for producing same, conductive composition, and method for producing same9 Apr 2026US 2026/0098127 A1Mitsubishi Chemical Corporation
- Contact lenses having cationic monomers or cationic polymers for releasing comfort agents26 Feb 2026US 2026/0054913 A1Bausch + Lomb Ireland Limited
Most cited
By later US patents
- Rigid annuloplasty device that becomes compliant after implantation421US 6,159,240 AMedtronic, Inc. · 2000
- Biofunctional surface modified ocular implants, surgical instruments, medical devices, prostheses, contact lenses and the like367US 6,387,379 B1University of Florida · 2002
- Surface modified surgical instruments, devices, implants, contact lenses and the like217US 5,100,689 AUniversity of Florida · 1992
- Hydrophilic polymer blend153US 4,642,267 AHydromer, Inc. · 1987
- Biomaterial comprising hyaluronic acid and derivatives thereof in interpenetrating polymer networks (IPN)109US 5,644,049 AM.U.R.S.T. Italian Ministry for Universitites and Scientific and Technology Research · 1997