E04G 21/3233
Without permanent provision in the floor or roof
Official title: {without permanent provision in the floor or roof}
E04G21/3233 (Without permanent provision in the floor or roof) appears on 176 US grants and 199 published applications in this corpus.
Search patents in E04G- Granted patents
- 176
- Published applications
- 199
- Assignees
- 97
- Inventors
- 296
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 4 |
| 2002 | 2 | 1 |
| 2003 | 4 | 6 |
| 2004 | 1 | 3 |
| 2005 | 8 | 4 |
| 2006 | 2 | 10 |
| 2007 | 6 | 7 |
| 2008 | 1 | 3 |
| 2009 | 5 | 7 |
| 2010 | 1 | 4 |
| 2011 | 3 | 5 |
| 2012 | 4 | 3 |
| 2013 | 5 | 11 |
| 2014 | 3 | 10 |
| 2015 | 7 | 11 |
| 2016 | 7 | 8 |
| 2017 | 8 | 6 |
| 2018 | 10 | 12 |
| 2019 | 9 | 15 |
| 2020 | 10 | 11 |
| 2021 | 6 | 5 |
| 2022 | 10 | 12 |
| 2023 | 6 | 10 |
| 2024 | 11 | 13 |
| 2025 | 8 | 11 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Modular free-standing ballasted guardrail system26 May 2026US 12,637,868 B2Sayfa R&D Pty Ltd
- Portable rooftop guardrail assembly28 Apr 2026US 12,612,794 B1USA Corporate Holding, Inc.
- Erectable compression posts for temporary fencing installation3 Mar 2026US 12,565,791 B2Tops Scaffold & Shoring Supply Ltd.
- Railing base for a safety railing structure, guardrails23 Dec 2025US 12,503,869 B2Tractel Inc. U.S.A.
- Roof edge safety system2 Dec 2025US 12,486,682 B2Scepaniak IP Holdings, LLC
- Deck post for multi-storey building construction8 Oct 2026US 2026/0308927 A1
- Apparatus for quick-deploy scaffolding16 Jul 2026US 2026/0201712 A1
- Apparatus for quick-deploy scaffolding11 Jun 2026US 2026/0160082 A1
- Apparatus for quick-deploy scaffolding5 Mar 2026US 2026/0062931 A1
- Safety rail system19 Feb 2026US 2026/0049490 A1Aldeck Group Pty Ltd
Most cited
By later US patents
- Frame erection safety system and components thereof66US 5,029,670 A1991
- Safety device for steelworkers64US 5,711,397 A1998
- Adaptable safety rail system for flat roofs and parapets59US 6,038,829 A2000
- Removable guard rail stanchion apparatus57US 3,995,833 A1976
- Safety device for roof work48US 5,143,170 A1992