E04D 3/24
Roof covering by making use of flat or curved slabs or stiff
Official title: with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like (E04D3/35 takes precedence)
E04D3/24 (Roof covering by making use of flat or curved slabs or stiff) appears on 501 US grants and 356 published applications in this corpus.
Search patents in E04D- Granted patents
- 501
- Published applications
- 356
- Assignees
- 236
- Inventors
- 706
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 8 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 12 | 0 |
| 1985 | 8 | 0 |
| 1986 | 13 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 10 | 0 |
| 2001 | 12 | 4 |
| 2002 | 7 | 7 |
| 2003 | 7 | 8 |
| 2004 | 5 | 8 |
| 2005 | 9 | 14 |
| 2006 | 2 | 10 |
| 2007 | 3 | 10 |
| 2008 | 2 | 12 |
| 2009 | 2 | 18 |
| 2010 | 15 | 13 |
| 2011 | 10 | 19 |
| 2012 | 11 | 13 |
| 2013 | 13 | 13 |
| 2014 | 14 | 20 |
| 2015 | 13 | 19 |
| 2016 | 20 | 22 |
| 2017 | 15 | 19 |
| 2018 | 15 | 19 |
| 2019 | 24 | 25 |
| 2020 | 20 | 20 |
| 2021 | 15 | 21 |
| 2022 | 14 | 10 |
| 2023 | 18 | 9 |
| 2024 | 13 | 10 |
| 2025 | 8 | 8 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Contoured mesh ridge vents6 Oct 2026US 12,753,609 B2Bmic LLC
- Hybrid standing seam metal panel and membrane roof cover system18 Aug 2026US 12,709,895 B1McElroy Metal Mill, Inc.
- Modular building construction4 Aug 2026US 12,698,632 B2L2U Group Pty Ltd
- Polycarbonate roof panel having reinforcement recess for coupling to sandwich panel26 May 2026US 12,637,862 B2Dan-Pal
- Roof covering element, modular roofing sheet5 May 2026US 12,618,239 B2Wiecek Budmat
- Photovoltaic module mounting assembly6 Aug 2026US 2026/0230030 A1Unirac, Inc.
- Rail mounted junction box30 Jul 2026US 2026/0221927 A1Unirac, Inc.
- Backer rod for metal roofs and siding16 Apr 2026US 2026/0103891 A1
- Sealing and connecting device for overlapping roof sheeting26 Mar 2026US 2026/0085522 A1
- Roofing panels with water shedding features15 Jan 2026US 2026/0015863 A1Bmic LLC
Most cited
By later US patents
- Box formed building panel of extruded plastic397US 4,299,070 A1981
- Extruded structural system224US 4,557,091 ACorflex International, Inc. · 1985
- Constructional panels208US 5,050,362 APolygal · 1991
- Simulated cedar shake construction139US 4,015,391 AAlside, Inc. · 1977
- Light-transmitting wall panels123US 4,998,395 A1991