A47C 21/046
Without active means
Official title: {without active means, e.g. with openings or heat conductors}
A47C21/046 (Without active means) appears on 195 US grants and 235 published applications in this corpus.
Search patents in A47C- Granted patents
- 195
- Published applications
- 235
- Assignees
- 114
- Inventors
- 343
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 2 |
| 2003 | 1 | 4 |
| 2004 | 2 | 3 |
| 2005 | 2 | 4 |
| 2006 | 3 | 5 |
| 2007 | 1 | 7 |
| 2008 | 2 | 4 |
| 2009 | 0 | 7 |
| 2010 | 2 | 5 |
| 2011 | 0 | 3 |
| 2012 | 2 | 5 |
| 2013 | 4 | 9 |
| 2014 | 4 | 16 |
| 2015 | 9 | 12 |
| 2016 | 5 | 11 |
| 2017 | 8 | 16 |
| 2018 | 12 | 18 |
| 2019 | 10 | 20 |
| 2020 | 23 | 15 |
| 2021 | 15 | 17 |
| 2022 | 6 | 13 |
| 2023 | 13 | 13 |
| 2024 | 10 | 8 |
| 2025 | 8 | 10 |
| 2026 | 9 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Temperature regulating foam padding with passive cooling and active heating6 Oct 2026US 12,751,558 B2Variowell Development GmbH
- Nested foam layers in bedding or seating product25 Aug 2026US 12,714,238 B2L&P Property Management Company
- Multi-zone temperature modulation system for bed or blanket23 Jun 2026US 12,660,932 B1Sleep Solutions Inc.
- Cooling material for bedding applications16 Jun 2026US 12,653,323 B2Salvi, LLC
- Mattress assembly with reduced heat index5 May 2026US 12,616,310 B2Dreamwell, Ltd.
- Mattress core for a piece of furniture for lying on, and child's mattress18 Jun 2026US 2026/0165500 A1Bett1.De GmbH
- Mattress topper11 Jun 2026US 2026/0157533 A1Bedgear, LLC
- Customizable cushioning structure for addressing medical conditions and symptoms16 Apr 2026US 2026/0102005 A1Majestic Beds, LLC
- Performance bed sheets12 Feb 2026US 2026/0041253 A1Bedgear, LLC
- Mattress Support Apparatus29 Jan 2026US 2026/0026630 A1Meliusly Ventures LLC
Most cited
By later US patents
- Ventilated foam cushion158US 5,226,188 A1993
- Ventilating, inflatable mattress103US 4,485,505 A1984
- Padding for mattresses and like articles101US 3,974,532 AMitsuyoshi Hamasu · 1976
- Support surface with phase change material or heat tubes100US 6,699,266 B22004
- Surface element80US 6,083,857 AHelsa-Werke Helmut Sandler GmbH & Co. KG · 2000