E04F 11/035
Stairways consisting of a plurality of assembled modular parts without further support
Official title: Stairways consisting of a plurality of assembled modular parts without further support {(E04F11/032 takes precedence)}
E04F11/035 (Stairways consisting of a plurality of assembled modular parts without further support) appears on 90 US grants and 72 published applications in this corpus.
Search patents in E04F- Granted patents
- 90
- Published applications
- 72
- Assignees
- 46
- Inventors
- 160
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 4 |
| 2011 | 1 | 3 |
| 2012 | 4 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 3 |
| 2015 | 3 | 2 |
| 2016 | 3 | 6 |
| 2017 | 4 | 5 |
| 2018 | 3 | 4 |
| 2019 | 7 | 6 |
| 2020 | 3 | 2 |
| 2021 | 0 | 2 |
| 2022 | 1 | 4 |
| 2023 | 6 | 3 |
| 2024 | 4 | 4 |
| 2025 | 3 | 5 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Precast concrete stairway construction method25 Aug 2026US 12,716,243 B2Easycore Co., Ltd.
- Modular level access structures16 Jun 2026US 12,655,638 B2
- Method for producing a structural element, and a staircase and a structural element and a staircase which have been produced according to this method21 Oct 2025US 12,448,777 B2Ecosourcen NV
- Modular construction connection mechanism15 Jul 2025US 12,359,439 B2Prefabricated Design Systems, LLC
- Platform system29 Apr 2025US 12,286,794 B2Safe Rack LLC
- Modular construction connection mechanism2 Jul 2026US 2026/0185358 A1Prefabricated Design Systems, LLC
- Assembly method for bath steps2 Jul 2026US 2026/0185359 A1Guangzhou Taisheng Sanitary Ware Technology Co.,Ltd
- Platform system11 Jun 2026US 2026/0160071 A1Safe Rack LLC
- Robot-deployable accessibility system19 Mar 2026US 2026/0078586 A1United Kingdom Atomic Energy Authority
- Compensating element for extending a modular set of stairs, modular set of stairs and method for extending a modular set of stairs31 Jul 2025US 2025/0243678 A1Peri SE
Most cited
By later US patents
- Storage and/or transport container of plastics material41US 4,848,578 AFritz Schafer Gesellschaft mit beschrankter Haftung · 1989
- Modular free standing structure34US 8,256,172 B22012
- Modular tread and riser unit30US 5,806,254 A1998
- Supporting bolt29US 4,373,309 AGelu Reutlinger Steinwerk Gerhard Lutz GmbH · 1983
- Circular ladder27US 4,328,880 ALaitram, L. L. C. · 1982