B32B 23/00
Layered products comprising a layer of cellulosic plastic substances , i.e. substances
Official title: Layered products comprising {a layer of} cellulosic plastic substances {, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose}
B32B23/00 (Layered products comprising a layer of cellulosic plastic substances , i.e. substances) appears on 1,122 US grants and 1,698 published applications in this corpus.
Search patents in B32B- Granted patents
- 1,122
- Published applications
- 1,698
- Assignees
- 736
- Inventors
- 3,631
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 10 | 4 |
| 2002 | 13 | 14 |
| 2003 | 17 | 21 |
| 2004 | 15 | 23 |
| 2005 | 6 | 26 |
| 2006 | 4 | 30 |
| 2007 | 8 | 26 |
| 2008 | 5 | 22 |
| 2009 | 3 | 49 |
| 2010 | 12 | 67 |
| 2011 | 15 | 55 |
| 2012 | 23 | 40 |
| 2013 | 32 | 43 |
| 2014 | 25 | 53 |
| 2015 | 46 | 42 |
| 2016 | 35 | 73 |
| 2017 | 31 | 127 |
| 2018 | 56 | 173 |
| 2019 | 93 | 167 |
| 2020 | 116 | 142 |
| 2021 | 103 | 152 |
| 2022 | 93 | 111 |
| 2023 | 79 | 87 |
| 2024 | 85 | 65 |
| 2025 | 61 | 55 |
| 2026 | 37 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B32B 23/04Comprising such cellulosic plastic substance as the main or only constituent of902
- B32B 23/20Comprising esters262
- B32B 23/10Next to a fibrous or filamentary layer165
- B32B 23/02In the form of fibres or filaments76
- B32B 23/14Layered products comprising a layer of cellulosic plastic substances , i.e. substances55
- B32B 23/12Next to a particulate layer27
- B32B 23/22Comprising ethers21
Recent patents
- Wavelength conversion member6 Oct 2026US 12,752,518 B2Nichia Corporation
- Prepreg master rolls and slit tape and method1 Sep 2026US 12,722,356 B2Web Industries, Inc.
- Adhesive nitric oxide delivery bandage for skin condition healing11 Aug 2026US 12,702,594 B2Noxy Health Products, Inc.
- Composite materials4 Aug 2026US 12,697,803 B2University of Leeds
- Co-extruded multi-layered cellulose-based film and a method for its manufacture and products manufactured therefrom7 Jul 2026US 12,673,480 B2
- Laminate including transparent electroconductive film and porous film, biochip including laminate, and method for manufacturing these17 Sep 2026US 2026/0276633 A1
- A method for producing a barrier substrate, and a barrier substrate3 Sep 2026US 2026/0257452 A1Stora Enso OYJ
- Laminated biodegradable film for packaging pharmaceutical compositions20 Aug 2026US 2026/0242112 A1Boehringer Ingelheim Vetmedica GmbH
- Adhesive composition, cured body, laminate, optical article, lens, and spectacles13 Aug 2026US 2026/0234454 A1Tokuyama Corporation
- Cellulose based composite planks13 Aug 2026US 2026/0234944 A1Columbia Insurance Company
Most cited
By later US patents
- Osmotic system having laminated wall comprising semipermeable lamina and microporous lamina309US 4,160,452 AAlza Corporation · 1979
- Textile fabric and method of manufacturing the same157US 4,144,370 AJohnson & Johnson · 1979
- Biodegradable, liquid impervious multilayer film compositions147US 5,391,423 AThe Procter & Gamble Company · 1995
- Security paper with color mark145US 5,449,200 ADomtar Inc. · 1995
- Wet-resilient webs and disposable articles made therewith135US 6,436,234 B1Kimberly-Clark Worldwide, Inc. · 2002