A47C 23/00
Spring mattresses with rigid frame or forming part of the bedstead
Official title: Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
A47C23/00 (Spring mattresses with rigid frame or forming part of the bedstead) appears on 917 US grants and 719 published applications in this corpus.
Search patents in A47C- Granted patents
- 917
- Published applications
- 719
- Assignees
- 347
- Inventors
- 1,024
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 19 | 0 |
| 1978 | 22 | 0 |
| 1979 | 10 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 11 | 0 |
| 1985 | 10 | 0 |
| 1986 | 13 | 0 |
| 1987 | 24 | 0 |
| 1988 | 20 | 0 |
| 1989 | 18 | 0 |
| 1990 | 11 | 0 |
| 1991 | 14 | 0 |
| 1992 | 10 | 0 |
| 1993 | 15 | 0 |
| 1994 | 18 | 0 |
| 1995 | 21 | 0 |
| 1996 | 16 | 0 |
| 1997 | 10 | 0 |
| 1998 | 13 | 0 |
| 1999 | 18 | 0 |
| 2000 | 13 | 0 |
| 2001 | 18 | 3 |
| 2002 | 22 | 22 |
| 2003 | 14 | 21 |
| 2004 | 24 | 35 |
| 2005 | 18 | 24 |
| 2006 | 15 | 22 |
| 2007 | 13 | 25 |
| 2008 | 24 | 29 |
| 2009 | 14 | 31 |
| 2010 | 14 | 25 |
| 2011 | 18 | 21 |
| 2012 | 15 | 28 |
| 2013 | 21 | 26 |
| 2014 | 25 | 38 |
| 2015 | 30 | 36 |
| 2016 | 37 | 30 |
| 2017 | 24 | 23 |
| 2018 | 21 | 29 |
| 2019 | 19 | 32 |
| 2020 | 31 | 33 |
| 2021 | 28 | 36 |
| 2022 | 23 | 33 |
| 2023 | 20 | 23 |
| 2024 | 19 | 36 |
| 2025 | 25 | 44 |
| 2026 | 19 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A47C 23/04Spring mattresses with rigid frame or forming part of the bedstead: using396
- A47C 23/002Spring mattresses with rigid frame or forming part of the bedstead: with185
- A47C 23/06Spring mattresses with rigid frame or forming part of the bedstead: using154
- A47C 23/12Spring mattresses with rigid frame or forming part of the bedstead: using94
- A47C 23/02Spring mattresses with rigid frame or forming part of the bedstead: using84
- A47C 23/005Foldable or dismountable83
- A47C 23/30Spring mattresses with rigid frame or forming part of the bedstead: using60
- A47C 23/007Edge stiffeners47
All 9 subgroupsShow fewer
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Most cited
By later US patents
- Corner piece for a soft-sided mattress205US 6,708,357 B2Select Comfort Corporation · 2004
- Pressure relief support system for a mattress158US 5,070,560 AHealthflex, Inc. · 1991
- Mattress system116US 5,513,402 A1996
- Pressure relief support system for a mattress109US 5,412,821 ASpan-America Medical Systems, Inc. · 1995
- Flexible elastic support107US 4,452,485 A1984