D04H 1/4309
Polyvinyl alcohol
D04H1/4309 (Polyvinyl alcohol) appears on 96 US grants and 112 published applications in this corpus.
Search patents in D04H- Granted patents
- 96
- Published applications
- 112
- Assignees
- 51
- Inventors
- 265
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 4 |
| 2004 | 2 | 3 |
| 2005 | 2 | 3 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 4 |
| 2009 | 2 | 4 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 7 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 2 | 8 |
| 2019 | 1 | 6 |
| 2020 | 6 | 8 |
| 2021 | 2 | 7 |
| 2022 | 9 | 18 |
| 2023 | 11 | 9 |
| 2024 | 9 | 8 |
| 2025 | 6 | 6 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water soluble fibers with post process modifications and articles containing same28 Jul 2026US 12,692,650 B2Monosol, LLC
- Water disintegrable, foam producing article for use as a toilet bowl cleaner12 May 2026US 12,624,319 B2The Procter & Gamble Company
- Nonwoven water-soluble composite structure17 Feb 2026US 12,552,129 B2Monosol, LLC
- Extruded polyvinyl alcohol fibres and fibrous products20 Jan 2026US 12,528,240 B2Aquapak IP Limited
- Wound dressing material and methods of making and using the same7 Oct 2025US 12,433,794 B2Solventum Intellectual Properties Company
- Composition for preventing or treating capsular contracture caused by implant surgery and use thereof1 Oct 2026US 2026/0295124 A1Soonchunhyang University Industry Academy Cooperation Foundation
- Polyvinyl alcohol fiber and method for producing same27 Aug 2026US 2026/0250886 A1Kuraray Co., Ltd.
- Polyvinyl alcohol resin, water-soluble film, extrusion-molded article, filament, nonwoven fabric, container, method for producing water-soluble film, and aqueous solution6 Aug 2026US 2026/0226205 A1Kuraray Co., Ltd.
- Low basis weight nonwoven webs and methods for making same12 Mar 2026US 2026/0071365 A1The Procter & Gamble Company
- Multi-ply dispersible nonwoven material12 Feb 2026US 2026/0043176 A1Suominen Oyj
Most cited
By later US patents
- Thermoplastic polyvinyl alcohol fibers and method for producing them93US 6,552,123 B1Kuraray Co., Ltd. · 2003
- Fibrous materials74US 3,996,145 AImperial Chemical Industries PLC · 1976
- Polyvinyl alcohol fibers, and nonwoven fabric comprising them73US 7,892,992 B2Kuraray Co., Ltd. · 2011
- Ultrafine fiber entangled sheet and method of producing the same69US 4,476,186 AToray Industries, Inc. · 1984
- Water dispersible, pre-saturated wiping products60US 7,378,360 B2Kimberly-Clark Worldwide, Inc. · 2008