A47C 31/04
Clamps for attaching flat elastic strips or flat meandering springs to frames
A47C31/04 (Clamps for attaching flat elastic strips or flat meandering springs to frames) appears on 76 US grants and 36 published applications in this corpus.
Search patents in A47C- Granted patents
- 76
- Published applications
- 36
- Assignees
- 34
- Inventors
- 91
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 6 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 3 | 2 |
| 2008 | 2 | 1 |
| 2009 | 3 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 3 | 4 |
| 2020 | 3 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Chair and frame assembly thereof9 Jun 2026US 12,648,648 B2
- Sofa seat frame, sofa base assembly, sofa and sofa production and assembly process21 Oct 2025US 12,446,699 B2Remacro Technology Co., Ltd.
- Rotationally assembled plastic mesh9 Apr 2024US 11,953,039 B2
- Sofa seat frame, sofa base assembly, sofa and sofa production and assembly process9 Jan 2024US 11,864,657 B2Remacro Technology Co., Ltd.
- Textile deck assembly for furniture items19 Dec 2023US 11,844,431 B2Ashley Furniture Industries, Inc.
- Chair and frame assembly thereof13 Nov 2025US 2025/0344866 A1
- Seating structure having a natural material integrated with an elastically deformable layer2 Oct 2025US 2025/0302198 A1MillerKnoll, Inc.
- Sofa Seat Frame, Sofa Base Assembly, Sofa and Sofa Production and Assembly Process21 Mar 2024US 2024/0090674 A1Remacro Technology Co., Ltd.
- Textile deck assembly for furniture items13 Apr 2023US 2023/0114034 A1Ashley Furniture Industries, Inc.
- Plastic fabric rotary assembly23 Mar 2023US 2023/0090725 A1
Most cited
By later US patents
- Combined tension and back stop function for seating unit77US 6,880,886 B2Steelcase Development Corporation · 2005
- Seating with comfort surface77US 7,360,835 B2Steelcase Inc. · 2008
- Control mechanism for seating unit64US 7,165,811 B2Steelcase Development Corporation · 2007
- Combined tension and back stop function for seating unit63US 6,932,430 B2Steelcase Development Corporation · 2005
- Seating with comfort surface62US 7,226,130 B2Steelcase Development Corporation · 2007