B32B 21/00
Layered products comprising a layer of wood
Official title: Layered products comprising {a layer of} wood, e.g. wood board, veneer, wood particle board
B32B21/00 (Layered products comprising a layer of wood) appears on 2,427 US grants and 3,234 published applications in this corpus.
Search patents in B32B- Granted patents
- 2,427
- Published applications
- 3,234
- Assignees
- 1,407
- Inventors
- 5,184
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 15 | 0 |
| 1978 | 29 | 0 |
| 1979 | 12 | 0 |
| 1980 | 17 | 0 |
| 1981 | 13 | 0 |
| 1982 | 13 | 0 |
| 1983 | 14 | 0 |
| 1984 | 15 | 0 |
| 1985 | 22 | 0 |
| 1986 | 10 | 0 |
| 1987 | 18 | 0 |
| 1988 | 9 | 0 |
| 1989 | 17 | 0 |
| 1990 | 17 | 0 |
| 1991 | 13 | 0 |
| 1992 | 19 | 0 |
| 1993 | 20 | 0 |
| 1994 | 14 | 0 |
| 1995 | 23 | 0 |
| 1996 | 19 | 0 |
| 1997 | 18 | 0 |
| 1998 | 31 | 0 |
| 1999 | 31 | 0 |
| 2000 | 16 | 0 |
| 2001 | 27 | 9 |
| 2002 | 20 | 35 |
| 2003 | 32 | 49 |
| 2004 | 23 | 52 |
| 2005 | 20 | 62 |
| 2006 | 15 | 70 |
| 2007 | 22 | 77 |
| 2008 | 20 | 55 |
| 2009 | 26 | 74 |
| 2010 | 37 | 95 |
| 2011 | 34 | 107 |
| 2012 | 38 | 89 |
| 2013 | 57 | 102 |
| 2014 | 56 | 91 |
| 2015 | 64 | 113 |
| 2016 | 89 | 150 |
| 2017 | 95 | 165 |
| 2018 | 100 | 247 |
| 2019 | 140 | 266 |
| 2020 | 181 | 252 |
| 2021 | 180 | 253 |
| 2022 | 177 | 213 |
| 2023 | 149 | 195 |
| 2024 | 160 | 180 |
| 2025 | 167 | 130 |
| 2026 | 58 | 103 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B32B 21/04Comprising wood as the main or only constituent of a layer, which1,673
- B32B 21/02The layer being formed of fibres, chips, or particles893
- B32B 21/14Comprising wood board or veneer794
- B32B 21/10Next to a fibrous or filamentary layer548
- B32B 21/13All layers being exclusively wood365
- B32B 21/12Next to a particulate layer84
Recent patents
- Multi-material sheathing system6 Oct 2026US 12,752,520 B2Owens Corning Intellectual Capital, LLC
- Reformable epoxy resin for composites and methods thereof8 Sep 2026US 12,728,623 B2Zephyros, Inc.
- Lightweight molded covers and plates8 Sep 2026US 12,729,501 B2Hubbell Incorporated
- Adhesive bonding composition and method of use1 Sep 2026US 12,722,358 B2Immunolight, LLC
- Direct lamination of a melamine layer to a magnesium oxide core11 Aug 2026US 12,703,171 B1Columbia Insurance Company
- Floor panel8 Oct 2026US 2026/0308921 A1Unilin BV
- Method of Producing One or More Laminate Boards and Laminate Board1 Oct 2026US 2026/0294104 A1Kronoplus Limited
- Wood-based material panel with at least one depression embossed into the upper surface1 Oct 2026US 2026/0295979 A1Flooring Technologies Ltd.
- Laminate panel and method for manufacturing a laminate panel1 Oct 2026US 2026/0295980 A1Aladdin Manufacturing Corporation
- Wood-based panel1 Oct 2026US 2026/0297958 A1Unilin BV
Most cited
By later US patents
- Veneer panels and method of making523US 5,755,068 A1998
- Square-edged laminated wood strip or plank materials262US 4,471,012 AMasonite Corporation · 1984
- Fire-resistant intumescent laminates251US 3,934,066 AW. R. Grace & Co. · 1976
- Flooring material for building237US 5,540,025 ADaiken Trade & Industry Co., Ltd. · 1996
- Floor covering209US 6,772,568 B2Unilin Beheer B. V., besloten vennootschap · 2004