E04G 23/008
Working measures on existing vertical ducts
Official title: {Working measures on existing vertical ducts, e.g. chimneys, garbage chutes}
E04G23/008 (Working measures on existing vertical ducts) appears on 15 US grants and 11 published applications in this corpus.
Search patents in E04G- Granted patents
- 15
- Published applications
- 11
- Assignees
- 8
- Inventors
- 26
- Latest grant
- 5 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Industrial chimney for wet stack operation provided with an internal lining system5 Dec 2023US 11,835,232 B2Hadek Protective Systems B.V.
- Materials and methods for lining a chimney7 May 2019US 10,280,639 B2
- Inspection and repair module29 Aug 2017US 9,746,429 B2Smart Applications Limited
- System and method for in-place vent pipe restoration5 Jan 2016US 9,228,689 B1
- Induced macro-cell corrosion prevention method10 Jun 2014US 8,745,957 B2King Saud University
- High Speed Liner2 Feb 2023US 2023/0035040 A1Alden Research Laboratory, Inc.
- Industrial chimney for wet stack operation provided with an internal lining system9 Dec 2021US 2021/0381690 A1Hadek Protective Systems B.V.
- Inspection and repair module7 May 2015US 2015/0124237 A1Smart Applications Limited
- Preparation of a thermoset resin system suitable for the preparation of fibre reinforced prepreg, the prepreg obtainable from the resin system, and its applications14 Aug 2014US 2014/0224406 A1Polinvent Kft.
- Induced macro-cell corrosion prevention method17 Oct 2013US 2013/0269283 A1King Saud University
Most cited
By later US patents
- System and method for in-place vent pipe restoration11US 9,228,689 B12016
- Demolition machine for delining a furnace8US 4,068,895 AO. W. Reese, Inc. · 1978
- Chimney reinforcing device8US 5,444,952 A1995
- Apparatus for removing internal tiles from chimneys5US 4,603,747 A1986
- Chimney reinforcement device4US 5,970,668 A1999