B27K 3/00
Impregnating wood
Official title: Impregnating wood, {e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process}(dyeing, staining B27K5/00)
B27K3/00 (Impregnating wood) appears on 1,316 US grants and 1,154 published applications in this corpus.
Search patents in B27K- Granted patents
- 1,316
- Published applications
- 1,154
- Assignees
- 784
- Inventors
- 2,498
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 36 | 0 |
| 1977 | 35 | 0 |
| 1978 | 16 | 0 |
| 1979 | 17 | 0 |
| 1980 | 16 | 0 |
| 1981 | 29 | 0 |
| 1982 | 18 | 0 |
| 1983 | 28 | 0 |
| 1984 | 11 | 0 |
| 1985 | 14 | 0 |
| 1986 | 25 | 0 |
| 1987 | 25 | 0 |
| 1988 | 30 | 0 |
| 1989 | 33 | 0 |
| 1990 | 25 | 0 |
| 1991 | 27 | 0 |
| 1992 | 29 | 0 |
| 1993 | 22 | 0 |
| 1994 | 24 | 0 |
| 1995 | 24 | 0 |
| 1996 | 26 | 0 |
| 1997 | 30 | 0 |
| 1998 | 20 | 0 |
| 1999 | 27 | 0 |
| 2000 | 26 | 0 |
| 2001 | 35 | 17 |
| 2002 | 34 | 35 |
| 2003 | 43 | 36 |
| 2004 | 21 | 45 |
| 2005 | 16 | 50 |
| 2006 | 12 | 66 |
| 2007 | 18 | 52 |
| 2008 | 14 | 49 |
| 2009 | 16 | 54 |
| 2010 | 32 | 41 |
| 2011 | 13 | 40 |
| 2012 | 20 | 35 |
| 2013 | 32 | 51 |
| 2014 | 35 | 49 |
| 2015 | 28 | 43 |
| 2016 | 37 | 43 |
| 2017 | 23 | 69 |
| 2018 | 30 | 33 |
| 2019 | 45 | 55 |
| 2020 | 27 | 47 |
| 2021 | 35 | 53 |
| 2022 | 30 | 46 |
| 2023 | 22 | 39 |
| 2024 | 33 | 51 |
| 2025 | 33 | 28 |
| 2026 | 19 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B27K 3/02Processes805
- B27K 3/34Organic impregnating agents652
- B27K 3/16Inorganic impregnating agents471
- B27K 3/52Impregnating agents containing mixtures of inorganic and organic compounds314
- B27K 3/005Employing compositions comprising microparticles49
- B27K 3/007Employing compositions comprising nanoparticles36
- B27K 3/002Employing compositions comprising microorganisms25
Recent patents
- Method for producing a wooden composite board, and device for producing a wooden composite board15 Sep 2026US 12,734,723 B2SWISS KRONO Tec AG
- Densified hygroscopic materials and products made thereof8 Sep 2026US 12,728,560 B2Swiss Wood Solutions AG
- Wood treatment compositions having antimicrobial properties4 Aug 2026US 12,697,748 B2Société en Commandite Prolam
- Treating cellulosic materials and methods of making treated cellulosic materials7 Jul 2026US 12,673,443 B2Georgia Tech Research Corporation
- Transparent wood surface imprinting optical device and application thereof30 Jun 2026US 12,667,994 B2Nanjing Forestry University
- Hemp wood preservative compositions and related methods24 Sep 2026US 2026/0284926 A1SporoBio, LLC
- Process for the acetylation of wood and acetylated wood17 Sep 2026US 2026/0273793 A1Titan Wood Limited
- Process for partial delignification and filling of a lignocellulosic material, and composite material structure able to be obtained by this process27 Aug 2026US 2026/0249512 A1SAS Woodoo
- Impregnated wood part, process for impregnating wood parts, and use of same20 Aug 2026US 2026/0242704 A1
- Acetylated wood30 Jul 2026US 2026/0216912 A1YKK AP Inc.
Most cited
By later US patents
- Fire retardant compositions and methods for preserving wood products255US 6,620,349 B12003
- Water repellent composition148US 5,695,551 ADow Corning Corporation · 1997
- Plug for sealing preservative in wood142US 5,114,032 A1992
- Golf club head97US 4,568,088 ASumitomo Rubber Industries, Ltd. · 1986
- Wood preservative based on polymeric nitrogen compounds and metal-fixing acids91US 5,186,947 ADr. Wolman GmbH · 1993