C09D 139/06
Homopolymers or copolymers of n-vinyl-pyrrolidones
Official title: Homopolymers or copolymers of N-vinyl-pyrrolidones
C09D139/06 (Homopolymers or copolymers of n-vinyl-pyrrolidones) appears on 190 US grants and 269 published applications in this corpus.
Search patents in C09D- Granted patents
- 190
- Published applications
- 269
- Assignees
- 197
- Inventors
- 686
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 4 |
| 2003 | 2 | 2 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 4 |
| 2007 | 0 | 2 |
| 2008 | 3 | 2 |
| 2009 | 0 | 4 |
| 2010 | 2 | 5 |
| 2011 | 1 | 8 |
| 2012 | 1 | 7 |
| 2013 | 4 | 6 |
| 2014 | 4 | 9 |
| 2015 | 7 | 21 |
| 2016 | 15 | 28 |
| 2017 | 12 | 21 |
| 2018 | 15 | 17 |
| 2019 | 11 | 14 |
| 2020 | 17 | 19 |
| 2021 | 12 | 16 |
| 2022 | 13 | 19 |
| 2023 | 8 | 19 |
| 2024 | 12 | 12 |
| 2025 | 15 | 15 |
| 2026 | 7 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composition and multilayer body29 Sep 2026US 12,747,337 B2Daikin Industries, Ltd.
- Solvent-based oxygen barrier coating composition1 Sep 2026US 12,723,161 B2Siegwerk Druckfarben AG & Co. KGaA
- Writing gel ink28 Jul 2026US 12,692,409 B2Societe BIC
- Process for producing a component21 Jul 2026US 12,686,166 B2Kyocera Fineceramics Europe GmbH
- Piezoceramic pastes with high ceramic content and method for printing same12 May 2026US 12,624,228 B2
- Multi-jet fusion printing of porous structures8 Oct 2026US 2026/0308398 A1Nanyang Technological University
- Protective film agent, protective film forming method, and chip manufacturing method1 Oct 2026US 2026/0297341 A1Disco Corporation
- Method for producing conductive pigment paste and method for producing mixture paste24 Sep 2026US 2026/0286161 A1Kansai Paint Co., Ltd.
- Phosphonate-free, aqueous pickling compositions and their use27 Aug 2026US 2026/0250850 A1Chemetall GmbH
- Coated device and method for manufacturing same6 Aug 2026US 2026/0226285 A1Toray Industries, Inc.
Most cited
By later US patents
- Lubricious hydrogel coatings199US 5,290,585 AC. R. Bard, Inc. · 1994
- Lubricious hydrogel coatings118US 5,160,790 AC. R. Bard, Inc. · 1992
- Water strippable photochromic resin composition66US 5,185,390 APPG Industries, Inc. · 1993
- Method for preparing photochromic plastic article63US 5,130,353 APPG Industries, Inc. · 1992
- Film-forming hydrophilic polymers for transfix printing process52US 9,284,469 B2Xerox Corporation · 2016