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Class Information
Number: 5/736
Name: Beds > Mattress (for whole body) > Nonplanar top surface > With hills or peaks separated by valleys (e.g., egg crate type)
Description: Nonplanar mattress top surface in which at least a portion of the user contacting face has a pattern of protuberances totally surrounded on all sides by lowered surfaces, defining a surface that resembles an egg crate.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8356373 Unitary composite/hybrid cushioning structure(s) and profile(s) comprised of a thermoplastic foam(s) and a thermoset material(s) Jan. 22, 2013
8196240 Pressure relief surface Jun. 12, 2012
7937791 Pressure relief surface May. 10, 2011
7712169 Infant pillow device May. 11, 2010
7559106 Dynamic pressure relieving mattresses Jul. 14, 2009
7520012 Mattress Apr. 21, 2009
7469436 Pressure relief surface Dec. 30, 2008
7444707 Shear reducing chair cushion Nov. 4, 2008
7426767 Waffle-cut foam mattress or cushion pad Sep. 23, 2008
7254852 Cushioning device Aug. 14, 2007
7191480 Mattress or cushion structure Mar. 20, 2007
7100229 Shear reducing mattress system Sep. 5, 2006
7036172 Bed having low body pressure and alignment May. 2, 2006
6829799 Ischial tuberosity pressure relief cushion Dec. 14, 2004
6782575 Mattress core and mattress providing pressure relief and minimizing body pressure Aug. 31, 2004
6701557 Single piece foam toppers with perimeter areas having variable support and firmness properties Mar. 9, 2004
6668409 Convoluted foam futon mattress Dec. 30, 2003
6434771 Mattress incorporating tourmaline Aug. 20, 2002
6381784 Pillow with improved head traction May. 7, 2002
6334442 Recumbent therapeutic support Jan. 1, 2002
6272707 Support pad Aug. 14, 2001
6256822 Patient support system with side bolster features Jul. 10, 2001
6202239 Multi-zone support Mar. 20, 2001
6199234 Infant comfort mattress Mar. 13, 2001
6052851 Mattress for minimizing decubitus ulcers Apr. 25, 2000
6029669 Modified barium swallow board Feb. 29, 2000
6003179 Inclined anatomic support surface Dec. 21, 1999
D417355 Mattress overlay Dec. 7, 1999
D400385 Varicolored convoluted mattress pad Nov. 3, 1998
5688538 Apparatus for three dimensional surface shaping of synthetic foam Nov. 18, 1997
5671492 Contoured asymmetrical mattress Sep. 30, 1997
5666682 Mattress pad of adjustable size Sep. 16, 1997
D383349 Cushion pad Sep. 9, 1997
D381543 Foam pad Jul. 29, 1997
5642546 Inflatable mattress with improved border support wall Jul. 1, 1997
5604021 Multi-layer support pad having regions of differing firmness Feb. 18, 1997
D374367 Mattress cushion Oct. 8, 1996
5534208 Three dimensional surface shaping of synthetic foam pads by continuous rotary process Jul. 9, 1996
5488746 Polyester fiber and foam core mattress pad Feb. 6, 1996
D365956 Mattress cushion Jan. 9, 1996
5477573 Method of manufacturing a zero base convolute pad Dec. 26, 1995
D355322 Tri-zone mattress overlay Feb. 14, 1995
5367727 Flotation bed with enhanced postural support Nov. 29, 1994
D352634 Mattress pad Nov. 22, 1994
5327597 Convoluted mattress pad having multiple proximate peaks Jul. 12, 1994
5319814 Bedding structure with enhanced postural support Jun. 14, 1994
5317768 Spring mattress with a top portion containing foam and fibers Jun. 7, 1994
D339261 Contoured foam mattress pad Sep. 14, 1993
D339019 Mattress pad Sep. 7, 1993
5230110 Mattress cushion with multiple zones Jul. 27, 1993

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