A47C 7/35
Combinations of different types of springs
Official title: Combinations of different types of springs; Adjustable springs; Attachment of springs to other springs or to {the base} frame {; Springs for seat parts not provided for in other groups of this subclass}
A47C7/35 (Combinations of different types of springs) appears on 90 US grants and 96 published applications in this corpus.
Search patents in A47C- Granted patents
- 90
- Published applications
- 96
- Assignees
- 40
- Inventors
- 103
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 11 |
| 2009 | 0 | 10 |
| 2010 | 4 | 2 |
| 2011 | 4 | 5 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 0 | 2 |
| 2015 | 6 | 3 |
| 2016 | 6 | 1 |
| 2017 | 6 | 9 |
| 2018 | 4 | 5 |
| 2019 | 4 | 12 |
| 2020 | 8 | 8 |
| 2021 | 13 | 10 |
| 2022 | 3 | 1 |
| 2023 | 6 | 4 |
| 2024 | 3 | 5 |
| 2025 | 4 | 2 |
| 2026 | 7 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Seating system with independent suspension1 Sep 2026US 12,721,446 B2DA International, Inc.
- Pocketed spring assembly having dimensionally stabilizing substrate25 Aug 2026US 12,714,236 B2L&P Property Management Company
- Pocketed spring assembly having dimensionally stabilizing substrate25 Aug 2026US 12,714,237 B2L&P Property Management Company
- Sitting or lying furniture18 Aug 2026US 12,708,210 B2Krall + Roth Services GmbH & Co. KG
- Chair and components2 Jun 2026US 12,642,356 B2Formway Furniture Limited
- Elastic structure for weight distribution, weight support, and ventilation, and seat cushion including the same10 Sep 2026US 2026/0262851 A1Medsapiens Co., Ltd.
- Cushion for a seating furniture23 Apr 2026US 2026/0108077 A1Inter IKEA Systems B.V.
- Seating system with independent suspension10 Apr 2025US 2025/0113919 A1DA International, Inc.
- Pocketed Spring Assembly Having Dimensionally Stabilizing Substrate30 Jan 2025US 2025/0031862 A1L&P Property Management Company
- Sitting or lying furniture5 Dec 2024US 2024/0398120 A1Krall + Roth Services GmbH & Co. KG
Most cited
By later US patents
- Foam spring mattress using a foam containment facility95US 7,841,031 B2Hsiu Chen Liao · 2010
- Foam spring mattress with replaceable foam springs83US 8,181,296 B22012
- Foam spring mattress with replaceable foam springs80US 7,930,783 B22011
- Using a software application to configure a foam spring mattress79US 7,685,663 B22010
- Foam spring mattress73US 7,854,031 B22010