|
| US4004305 | 2 Apr 1976 | 25 Jan 1977 | Schnadig Corporation | Sleeper sofa and mattress combination |
| US4052760 | 23 Feb 1976 | 11 Oct 1977 | The United States Bedding Company | Coil spring assembly |
| US4213214 | 26 Dec 1978 | 22 Jul 1980 | | Multiple firmness multiple sleeper mattress |
| US4423308 | 22 Jun 1981 | 27 Dec 1983 | Simmons U.S.A. Corporation | Thermally controllable heating mattress |
| US4424600 | 22 Jun 1981 | 10 Jan 1984 | Simmons U.S.A. Corporation | Adjustable firmness mattress pillow top |
| US4435864 | 22 Jun 1981 | 13 Mar 1984 | Simons U.S.A. Corporation | Air bed arrangement |
| US4449261 | 22 Jun 1981 | 22 May 1984 | Simmons U.S.A. Corp. | Bed mattress having an improved pillow top |
| US5113539 | 31 Jul 1991 | 19 May 1992 | | Adjustable firmness coil spring mattress with inflatable tubes |
| US5178371 | 27 Jun 1989 | 12 Jan 1993 | Daimler-Benz Aktiengesellschaft | Motor-vehicle seat with a spring core resting on a subframe |
| US5231717 | 24 Jun 1992 | 3 Aug 1993 | Leggett & Platt, Incorporated | Bedding system |
| US5414882 | 20 Aug 1993 | 16 May 1995 | | Mattress assembly and method for rotating same |
| US5810171 | 9 Jan 1997 | 22 Sep 1998 | Jinwoong Ltd. | Bag buffer |
| US5953778 | 9 Feb 1998 | 21 Sep 1999 | L&P Property Management Company | Articulated mattress |
| US6202239 | 25 Feb 1999 | 20 Mar 2001 | Select Comfort Corp. | Multi-zone support |
| US6353952 | 31 May 2000 | 12 Mar 2002 | L&P Property Management Company | Posturized bedding or seating product with springs of differing heights |
| US6772463 | 20 Mar 2002 | 10 Aug 2004 | Dreamwell Ltd. | Perimeter stiffening system for a foam mattress |
| US6889398 | 17 Jun 2002 | 10 May 2005 | Paramount Bedding, Inc. | Coil spring containing mattress and method |
| US7219381 | 9 Aug 2004 | 22 May 2007 | Dreamwell, Ltd. | Perimeter stiffening system for a foam mattress |
| US7574763 | 21 May 2007 | 18 Aug 2009 | Dreamwell, Ltd. | Perimeter stiffening system for a foam mattress |
| US8001639 | 17 Aug 2009 | 23 Aug 2011 | Dreamwell, Ltd. | Perimeter stiffening system for a foam mattress |