B27K 3/16
Inorganic impregnating agents
B27K3/16 (Inorganic impregnating agents) appears on 471 US grants and 404 published applications in this corpus.
Search patents in B27K- Granted patents
- 471
- Published applications
- 404
- Assignees
- 321
- Inventors
- 891
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 12 | 0 |
| 1988 | 20 | 0 |
| 1989 | 20 | 0 |
| 1990 | 17 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 13 | 0 |
| 1996 | 9 | 0 |
| 1997 | 14 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 7 |
| 2002 | 8 | 10 |
| 2003 | 16 | 14 |
| 2004 | 7 | 14 |
| 2005 | 3 | 19 |
| 2006 | 2 | 22 |
| 2007 | 9 | 18 |
| 2008 | 5 | 18 |
| 2009 | 7 | 20 |
| 2010 | 11 | 8 |
| 2011 | 4 | 14 |
| 2012 | 4 | 6 |
| 2013 | 7 | 14 |
| 2014 | 16 | 17 |
| 2015 | 8 | 12 |
| 2016 | 11 | 12 |
| 2017 | 12 | 19 |
| 2018 | 9 | 10 |
| 2019 | 11 | 25 |
| 2020 | 5 | 20 |
| 2021 | 15 | 21 |
| 2022 | 8 | 19 |
| 2023 | 9 | 20 |
| 2024 | 17 | 24 |
| 2025 | 16 | 10 |
| 2026 | 7 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B27K 3/22Compounds of zinc or copper180
- B27K 3/20Compounds of alkali metals or ammonium130
- B27K 3/163Compounds of boron106
- B27K 3/32Mixtures of different inorganic impregnating agents100
- B27K 3/26Compounds of iron, aluminium, or chromium59
- B27K 3/166Compounds of phosphorus45
- B27K 3/28Compounds of arsenic or antimony21
- B27K 3/30Compounds of fluorine21
All 10 subgroupsShow fewer
Recent patents
- Treating cellulosic materials and methods of making treated cellulosic materials7 Jul 2026US 12,673,443 B2Georgia Tech Research Corporation
- Method for treating wood and construction element19 May 2026US 12,629,862 B2Houtindustrie “Mevo B.V.”
- Production of silicate solutions and their uses19 May 2026US 12,630,433 B2Total Alchemy Solutions, LLC
- Wood protecting methods and wood products produced with the methods5 May 2026US 12,617,120 B2OrganoWood AB
- Penflufen as a wood preservative against wood- destroying basidiomy cetes21 Apr 2026US 12,604,900 B2
- Antimicrobial materials, and systems and methods for fabrication and use thereof16 Jul 2026US 2026/0198500 A1University of Maryland, College Park
- Process To Make Silicate Functionalized Engineered Wood Articles With Improved Properties9 Jul 2026US 2026/0192485 A1T2Earth Holdings LLC
- Transparent wood composite, method for preparing the same, and optical film comprising the same9 Jul 2026US 2026/0192486 A1Hyundai Motor Company
- Modified wood and transparent wood composites, and systems and methods for forming and use thereof25 Jun 2026US 2026/0175467 A1University of Maryland, College Park
- Wood preservative and method for producing same11 Jun 2026US 2026/0157370 A1Koppers Performance Chemicals Inc.
Most cited
By later US patents
- Fire retardant compositions and methods for preserving wood products255US 6,620,349 B12003
- 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
- Fluorochemical water- and oil-repellant treating compositions54US 5,370,919 AMinnesota Mining and Manufacturing Company · 1994