E04B 1/946
Protection against smoke or toxic gases
Official title: {Protection against smoke or toxic gases}
E04B1/946 (Protection against smoke or toxic gases) appears on 57 US grants and 76 published applications in this corpus.
Search patents in E04B- Granted patents
- 57
- Published applications
- 76
- Assignees
- 35
- Inventors
- 80
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 3 |
| 2014 | 3 | 5 |
| 2015 | 6 | 4 |
| 2016 | 4 | 8 |
| 2017 | 3 | 7 |
| 2018 | 5 | 6 |
| 2019 | 6 | 11 |
| 2020 | 5 | 7 |
| 2021 | 7 | 1 |
| 2022 | 4 | 6 |
| 2023 | 4 | 3 |
| 2024 | 4 | 4 |
| 2025 | 3 | 3 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sealing device for double edge joints, and drywall14 Oct 2025US 12,442,179 B2Hilti Aktiengesellschaft
- Fire-stopping product22 Jul 2025US 12,366,065 B2tremco illbruck Limited
- Two-piece track system18 Mar 2025US 12,252,881 B2Cemco, LLC
- Sealing element, seal and method for installing a wall configuration15 Oct 2024US 12,116,775 B2Hilti Aktiengesellschaft
- Flame- and smoke-retardant adhesive packages and insulation products9 Jul 2024US 12,031,080 B2Winona Building Products, LLC
- Modular system for producing and sealing a line feedthrough1 Oct 2026US 2026/0297934 A1Hilti Aktiengesellschaft
- Modular non-combustible wall system27 Aug 2026US 2026/0250946 A1
- Wall gap fire block device and assembly9 Jul 2026US 2026/0192138 A1Cemco, LLC
- Sealing device for double edge joints, and drywall15 Jan 2026US 2026/0015855 A1Hilti Aktiengesellschaft
- Method of providing a service penetration through an internal building wall16 Oct 2025US 2025/0320717 A1tremco illbruck Limited
Most cited
By later US patents
- Smoke and heat barrier115US 4,566,242 AMetalines, Inc. · 1986
- Two-piece track system89US 8,555,566 B2California Expanded Metal Products Company · 2013
- Wall gap fire block device, system and method89US 8,671,632 B2California Expanded Metal Products Company · 2014
- Two-piece track system70US 8,973,319 B2California Expanded Metal Products Company · 2015
- Fire barrier68US 8,720,138 B2Balco, Inc. · 2014