B27K 3/52
Impregnating agents containing mixtures of inorganic and organic compounds
B27K3/52 (Impregnating agents containing mixtures of inorganic and organic compounds) appears on 314 US grants and 282 published applications in this corpus.
Search patents in B27K- Granted patents
- 314
- Published applications
- 282
- Assignees
- 216
- Inventors
- 591
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 10 | 0 |
| 1989 | 13 | 0 |
| 1990 | 11 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 7 |
| 2002 | 5 | 10 |
| 2003 | 16 | 12 |
| 2004 | 3 | 12 |
| 2005 | 4 | 15 |
| 2006 | 1 | 19 |
| 2007 | 3 | 15 |
| 2008 | 2 | 12 |
| 2009 | 3 | 20 |
| 2010 | 8 | 10 |
| 2011 | 4 | 5 |
| 2012 | 7 | 6 |
| 2013 | 6 | 6 |
| 2014 | 10 | 11 |
| 2015 | 7 | 8 |
| 2016 | 5 | 3 |
| 2017 | 5 | 9 |
| 2018 | 4 | 8 |
| 2019 | 6 | 23 |
| 2020 | 7 | 11 |
| 2021 | 10 | 8 |
| 2022 | 7 | 14 |
| 2023 | 9 | 12 |
| 2024 | 8 | 11 |
| 2025 | 12 | 6 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Penflufen as a wood preservative against wood- destroying basidiomy cetes21 Apr 2026US 12,604,900 B2
- Method for preventing damage caused by a fire20 Jan 2026US 12,528,990 B2Success World, S.L.
- Biocidal aerogel compositions for surface protection13 Jan 2026US 12,522,736 B2Aerogel ApS
- Wood composites and processes to modify same using stable, low pH aqueous silicate suspensions30 Dec 2025US 12,508,737 B2T2Earth Holdings LLC
- Pigment and pigment production method2 Dec 2025US 12,486,405 B2
- Hemp wood preservative compositions and related methods24 Sep 2026US 2026/0284926 A1SporoBio, LLC
- Transparent wood composite, method for preparing the same, and optical film comprising the same9 Jul 2026US 2026/0192486 A1Hyundai Motor Company
- Wood preservative and method for producing same11 Jun 2026US 2026/0157370 A1Koppers Performance Chemicals Inc.
- 1,3-propanediol carrier compositions and methods of use thereof4 Jun 2026US 2026/0151930 A1Primient Covation LLC
- Pigment and pigment production method26 Mar 2026US 2026/0085192 A1
Most cited
By later US patents
- Wood preservative based on polymeric nitrogen compounds and metal-fixing acids91US 5,186,947 ADr. Wolman GmbH · 1993
- Fire retarding composition and a method for impregnation of a combustible material58US 6,042,639 AFireguard Scandinavia AS · 2000
- Synergistic wood preservative compositions55US 5,462,589 AMississippi Forest Products Laboratory · 1995
- Preservative composition for wood52US 4,622,248 AOsmose Wood Preserving Co. of America, Inc. · 1986
- Timber preservative containing a copper compound50US 5,874,025 ABayer Aktiengesellschaft · 1999