C08F 226/10
N-vinyl-pyrrolidone
Official title: N-Vinyl-pyrrolidone
C08F226/10 (N-vinyl-pyrrolidone) appears on 309 US grants and 361 published applications in this corpus.
Search patents in C08F- Granted patents
- 309
- Published applications
- 361
- Assignees
- 187
- Inventors
- 995
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 3 |
| 2002 | 4 | 5 |
| 2003 | 9 | 3 |
| 2004 | 2 | 3 |
| 2005 | 3 | 6 |
| 2006 | 1 | 12 |
| 2007 | 3 | 19 |
| 2008 | 6 | 8 |
| 2009 | 5 | 21 |
| 2010 | 6 | 13 |
| 2011 | 13 | 18 |
| 2012 | 12 | 22 |
| 2013 | 6 | 18 |
| 2014 | 12 | 14 |
| 2015 | 17 | 22 |
| 2016 | 18 | 18 |
| 2017 | 17 | 15 |
| 2018 | 19 | 25 |
| 2019 | 12 | 21 |
| 2020 | 15 | 13 |
| 2021 | 20 | 15 |
| 2022 | 12 | 18 |
| 2023 | 4 | 15 |
| 2024 | 7 | 15 |
| 2025 | 11 | 10 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pressure-sensitive adhesive sheet and use thereof5 May 2026US 12,617,985 B2Nitto Denko Corporation
- Fabrication of solid materials or films from a polymerizable liquid10 Mar 2026US 12,570,782 B2Henkel AG & Co. KGaA
- Waterborne coating composition3 Mar 2026US 12,565,542 B2Allnex Netherlands B.V.
- Dual-phase zwitterionic monomers3 Mar 2026US 12,565,554 B2Kunzler Biomedical LLC
- Non-degradable embolisation microsphere17 Feb 2026US 12,552,891 B2Guerbet
- N-vinyl lactam copolymer and composition3 Sep 2026US 2026/0258178 A1Nippon Shokubai Co., Ltd.
- Unit dose compositions, methods of making the unit dose compositions as a unified solid13 Aug 2026US 2026/0234513 A1Church & Dwight Co., Inc.
- Coating composition comprising a binder polymer obtainable by copolymerizing a monomer mixture comprising a vinyl monomer and a butenolide monomer23 Jul 2026US 2026/0209543 A1Akzo Nobel Coatings International B. V.
- Dicationic polymer and copolymer and their use for chemical mechanical planarization16 Jul 2026US 2026/0201087 A1Versum Materials US, LLC
- Ionic polymers used as corrosion inhibitors in process streams in industrial systems and their method of obtaining18 Jun 2026US 2026/0167757 A1Instituto Mexicano Del Petroleo
Most cited
By later US patents
- Long wearable soft contact lens322US 6,867,245 B2Asahikasei Aime Co., Ltd · 2005
- Polymer compositions for contact lenses146US 5,006,622 ABausch & Lomb Incorporated · 1991
- Wettable hydrogels comprising reactive, hydrophilic, polymeric internal wetting agents141US 7,249,848 B2Johnson & Johnson Vision Care, Inc. · 2007
- Soft contact lenses displaying superior on-eye comfort131US 7,461,937 B2Johnson & Johnson Vision Care, Inc. · 2008
- Cross-linkable copolymers and hydrogels118US 5,712,356 ACIBA Vision Corporation · 1998