B27K 3/34
Organic impregnating agents
Official title: Organic impregnating agents {(polymers B27K3/15)}
B27K3/34 (Organic impregnating agents) appears on 652 US grants and 544 published applications in this corpus.
Search patents in B27K- Granted patents
- 652
- Published applications
- 544
- Assignees
- 420
- Inventors
- 1,276
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 17 | 0 |
| 1978 | 8 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 13 | 0 |
| 1982 | 12 | 0 |
| 1983 | 13 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 12 | 0 |
| 1987 | 16 | 0 |
| 1988 | 16 | 0 |
| 1989 | 22 | 0 |
| 1990 | 17 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 15 | 0 |
| 1994 | 14 | 0 |
| 1995 | 13 | 0 |
| 1996 | 15 | 0 |
| 1997 | 14 | 0 |
| 1998 | 14 | 0 |
| 1999 | 15 | 0 |
| 2000 | 8 | 0 |
| 2001 | 18 | 8 |
| 2002 | 24 | 17 |
| 2003 | 17 | 13 |
| 2004 | 10 | 20 |
| 2005 | 8 | 23 |
| 2006 | 5 | 31 |
| 2007 | 5 | 25 |
| 2008 | 12 | 18 |
| 2009 | 3 | 21 |
| 2010 | 15 | 21 |
| 2011 | 7 | 22 |
| 2012 | 11 | 19 |
| 2013 | 13 | 28 |
| 2014 | 20 | 24 |
| 2015 | 13 | 24 |
| 2016 | 19 | 23 |
| 2017 | 12 | 43 |
| 2018 | 15 | 16 |
| 2019 | 23 | 23 |
| 2020 | 13 | 21 |
| 2021 | 11 | 21 |
| 2022 | 12 | 15 |
| 2023 | 10 | 17 |
| 2024 | 16 | 22 |
| 2025 | 12 | 16 |
| 2026 | 9 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wood treatment compositions having antimicrobial properties4 Aug 2026US 12,697,748 B2Société en Commandite Prolam
- Transparent wood surface imprinting optical device and application thereof30 Jun 2026US 12,667,994 B2Nanjing Forestry University
- Wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method treating a wood substrate therewith, and a wood product produced therefrom26 May 2026US 12,636,810 B2Koppers Performance Chemicals Inc.
- Method for treating wood and construction element19 May 2026US 12,629,862 B2Houtindustrie “Mevo B.V.”
- Wood coating compositions12 May 2026US 12,624,249 B2Muylle-Facon
- Process for the acetylation of wood and acetylated wood17 Sep 2026US 2026/0273793 A1Titan Wood Limited
- 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.
- Release agent and corrosion inhibitor formulation and method of use2 Jul 2026US 2026/0184992 A1Polymer Solutions Group
- Wood preservative and method for producing same11 Jun 2026US 2026/0157370 A1Koppers Performance Chemicals Inc.
Most cited
By later US patents
- Wood preservative based on polymeric nitrogen compounds and metal-fixing acids91US 5,186,947 ADr. Wolman GmbH · 1993
- Waterproofing and preservative compositons for wood68US 5,833,741 ALonza Ltd. · 1998
- Anti-fouling compositions57US 5,990,043 ABayer Aktiengesellschaft · 1999
- Method of combating termites56US 4,833,158 AShell Internationale Research Maatschappij B. V. · 1989
- Synergistic wood preservative compositions55US 5,462,589 AMississippi Forest Products Laboratory · 1995