E04F 11/108
Of wood or with an upper layer of wood
Official title: of wood {or with an upper layer of wood}
E04F11/108 (Of wood or with an upper layer of wood) appears on 49 US grants and 51 published applications in this corpus.
Search patents in E04F- Granted patents
- 49
- Published applications
- 51
- Assignees
- 24
- Inventors
- 89
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 3 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 4 |
| 2008 | 1 | 3 |
| 2009 | 0 | 4 |
| 2010 | 0 | 4 |
| 2011 | 2 | 3 |
| 2012 | 2 | 2 |
| 2013 | 3 | 5 |
| 2014 | 4 | 5 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 2 | 2 |
| 2024 | 1 | 2 |
| 2025 | 3 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Device and methods for making a stair tread and a molded curved stair tread12 Aug 2025US 12,385,257 B2Mannington Mills, Inc.
- Staircase with adjustable height risers25 Mar 2025US 12,258,764 B2
- Returned stair tread having moisture compensating joint and method for making the same24 Sep 2024US 12,098,554 B2Young Manufacturing Company, Inc.
- Auxiliary obstacle-surmounting ramp for cleaning robot20 Jun 2023US D989,983 S1Beijing Roborock Technology Co., Ltd. · Design
- Book matched stair tread and method of manufacture1 Oct 2026US 2026/0297953 A1
- Staircase with adjustable height risers29 Aug 2024US 2024/0287811 A1
- Building components, structures formed therefrom and related methods1 Feb 2024US 2024/0035285 A1
- Returned stair tread having moisture compensating joint and method for making the same27 Jul 2023US 2023/0235566 A1Young Manufacturing Company, Inc.
- Method for producing a structural element, and a staircase and a structural element and a staircase which have been produced according to this method6 Jul 2023US 2023/0212860 A1Ecosourcen NV
Most cited
By later US patents
- System for interlocking perpendicular members46US 5,497,593 A1996
- Modular traditional staircase44US 6,125,598 A2000
- Stairtread made of a combination of higher quality wood and lower quality material35US 5,985,398 AManufacture de Lambton LTEE · 1999
- Universal modular tread and riser unit29US 6,230,454 B12001
- Floor or wall covering system with laying units which can be combined in a modular manner25US 9,890,540 B2Weitzer Holding GmbH · 2018