B27K 3/46
Coal tar
B27K3/46 (Coal tar) appears on 13 US grants and 8 published applications in this corpus.
Search patents in B27K- Granted patents
- 13
- Published applications
- 8
- Assignees
- 12
- Inventors
- 20
- Latest grant
- 19 Jan 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and formulation for the treatment of timber19 Jan 2021US 10,894,337 B2Arch Wood Protection Pty Ltd
- Compositions comprising unsaturated fatty esters and uses thereof23 Apr 2019US 10,264,794 B2Stella-Jones Inc.
- Single step creosote/borate wood treatment27 Nov 2018US 10,137,594 B2Stella-Jones Inc.
- Low odor creosote-based compositions and uses thereof7 Nov 2017US 9,808,955 B2Stella-Jones Inc.
- Single step creosote/borate wood treatment9 May 2017US 9,644,103 B2Stella-Jones Inc.
- A Method and Formulation for the Treatment of Timber25 Jan 2018US 2018/0021974 A1Arch Wood Protection Pty Ltd
- Biocide Concentrate Composition for the Addition to Oil-Based Formulations, and Compositions Containing the Same27 Apr 2017US 2017/0112135 A1Arch Wood Protection, Inc.
- Low odor creosote-based compositions and uses thereof23 Mar 2017US 2017/0080595 A1Stella-Jones Inc.
- Compositions comprising unsaturated fatty esters and uses thereof7 Jan 2016US 2016/0000090 A1Stella-Jones Inc.
- Single step creosote/borate wood treatment8 Jan 2015US 2015/0010768 A1Stella-Jones Inc.
Most cited
By later US patents
- Wood treatment composition and method of use22US 6,953,501 B2Inventions & Discoveries, LLC · 2005
- Composition for impregnating porous materials, preparation and use thereof20US 6,503,306 B1Monash University Act 1958 · 2003
- Process for post-treatment of preservative-treated wood14US 5,080,935 AMooney Chemicals, Inc. · 1992
- Method and apparatus for treating cellulosic products9US 4,343,840 AOld North Manufacturing Co., Inc. · 1982
- Method of dyeing wood veneer at elevated temperatures and pressures6US 5,942,008 A1999