E04D 3/00
Roof covering by making use of flat or curved slabs or stiff
Official title: Roof covering by making use of flat or curved slabs or stiff sheets (E04D1/00 takes precedence; built-up roofs E04D11/02)
E04D3/00 (Roof covering by making use of flat or curved slabs or stiff) appears on 1,905 US grants and 1,159 published applications in this corpus.
Search patents in E04D- Granted patents
- 1,905
- Published applications
- 1,159
- Assignees
- 758
- Inventors
- 2,458
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 32 | 0 |
| 1978 | 47 | 0 |
| 1979 | 23 | 0 |
| 1980 | 33 | 0 |
| 1981 | 34 | 0 |
| 1982 | 27 | 0 |
| 1983 | 33 | 0 |
| 1984 | 42 | 0 |
| 1985 | 41 | 0 |
| 1986 | 48 | 0 |
| 1987 | 49 | 0 |
| 1988 | 40 | 0 |
| 1989 | 43 | 0 |
| 1990 | 52 | 0 |
| 1991 | 42 | 0 |
| 1992 | 39 | 0 |
| 1993 | 38 | 0 |
| 1994 | 31 | 0 |
| 1995 | 36 | 0 |
| 1996 | 38 | 0 |
| 1997 | 37 | 0 |
| 1998 | 48 | 0 |
| 1999 | 48 | 0 |
| 2000 | 42 | 0 |
| 2001 | 46 | 15 |
| 2002 | 25 | 28 |
| 2003 | 26 | 34 |
| 2004 | 25 | 46 |
| 2005 | 25 | 52 |
| 2006 | 14 | 45 |
| 2007 | 18 | 33 |
| 2008 | 14 | 41 |
| 2009 | 14 | 51 |
| 2010 | 39 | 45 |
| 2011 | 33 | 52 |
| 2012 | 36 | 43 |
| 2013 | 40 | 41 |
| 2014 | 57 | 72 |
| 2015 | 49 | 42 |
| 2016 | 43 | 61 |
| 2017 | 48 | 52 |
| 2018 | 42 | 54 |
| 2019 | 47 | 64 |
| 2020 | 58 | 52 |
| 2021 | 41 | 61 |
| 2022 | 41 | 37 |
| 2023 | 48 | 53 |
| 2024 | 43 | 36 |
| 2025 | 33 | 28 |
| 2026 | 25 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E04D 3/36Connecting948
- E04D 3/24Roof covering by making use of flat or curved slabs or stiff501
- E04D 3/35Roofing slabs or stiff sheets comprising two or more layers368
- E04D 3/02Roof covering by making use of flat or curved slabs or stiff334
- E04D 3/40Slabs or sheets locally modified for auxiliary purposes189
- E04D 3/38Devices for sealing spaces or joints between roof-covering elements128
Recent patents
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- 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
- Building panels, assemblies, and associated methods21 Jul 2026US 12,687,018 B2Georgia-Pacific Gypsum LLC
- Very severe hail roof board27 Aug 2026US 2026/0250954 A1United States Gypsum Company
- Sandwich panel and building envelope thereof27 Aug 2026US 2026/0250955 A1
- Self-Drilling Fastener Having Buttress Threads, Hex Flange Head, Angled Shoulder, and Sealing Washer20 Aug 2026US 2026/0243291 A1Enstall US, Inc.
- Sheet of covering material, use of said sheet, building structure comprising said sheet and method for manufacturing said sheet6 Aug 2026US 2026/0226317 A1Redeahold Apeldoorn B.V.
- Ventilated structural panels and method of construction with ventilated structural panels6 Aug 2026US 2026/0226740 A1
Most cited
By later US patents
- Mounting system for installing an array of solar battery modules of a panel-like configuration on a roof439US 6,105,317 AMatsushita Electric Works, Ltd. · 2000
- Box formed building panel of extruded plastic397US 4,299,070 A1981
- Tongue-groove connection326US 4,100,710 AHoesch Werke Aktiengesellschaft · 1978
- Apparatus and method for mounting photovoltaic power generating systems on buildings283US 7,435,897 B2Schott Solar AG · 2008
- Roofing fastener270US 4,860,513 A1989