| US4077669A
              (en)
            
            * | 1977-01-19 | 1978-03-07 | Louis Fox | Self-centering posture seat | 
        
          | US4222138A
              (en)
            
            * | 1978-08-14 | 1980-09-16 | Rowley Richard L | Posture case | 
        
          | DE3338517A1
              (de)
            
            * | 1983-10-22 | 1985-05-02 | Hsiang-fan Pingtung Taiwan Hu | Sitzmoebel | 
        
          | US4630863A
              (en)
            
            * | 1985-09-09 | 1986-12-23 | Bio-Support Industries Ltd. | Portable seat | 
        
          | CA1260818A
              (en)
            
            * | 1986-04-18 | 1989-09-26 | Ergoform Inc. | Tilting seat | 
        
          | US4828325A
              (en)
            
            * | 1986-05-16 | 1989-05-09 | University Of Tennessee Research Corporation | Method of making a custom fitted composite foamed cushion, a preform kit and the resultant product of the process | 
        
          | US4798414A
              (en)
            
            * | 1987-01-13 | 1989-01-17 | Vincent Hughes | Physiotherapeutic chair like device | 
        
          | US4824169A
              (en)
            
            * | 1988-02-25 | 1989-04-25 | Jarrell Loyd E | Orthopedic seat | 
        
          | US5114209A
              (en)
            
            * | 1990-03-21 | 1992-05-19 | Dunn John C | Chair insert having a contoured back support portion and a seat support portion | 
        
          | AUPM891294A0
              (en)
            
            * | 1994-10-19 | 1994-11-10 | Dixon, Barry James | Improvements to chairs | 
        
          | ATE233063T1
              (de)
            
            * | 1995-08-16 | 2003-03-15 | Alan J Powell | Anatomischer sitz | 
        
          | SE515003C2
              (sv)
            
            * | 1995-09-21 | 2001-05-28 | Yrjoe Rinne | Stol | 
        
          | US5833319A
              (en)
            
            * | 1997-03-07 | 1998-11-10 | Davis; Samuel C. | Back cushion and seat cushion system | 
        
          | AU2003903213A0
              (en)
            
            * | 2003-06-25 | 2003-07-10 | Jennifer Anne Davidson | A chair | 
        
          | US7220376B2
              (en) | 2003-07-28 | 2007-05-22 | Aspen Seating, Llc | Individually-contoured seat cushion and shape capturing and fabricating method for seat cushion | 
        
          | US20050023872A1
              (en)
            
            * | 2003-07-28 | 2005-02-03 | Hetzel Thomas R. | Modular seat cushion with interlocking human support and base portions and method of creating and using a seat cushion | 
        
          | US7216388B2
              (en)
            
            * | 2003-07-28 | 2007-05-15 | Aspen Seating, Llc | Contoured seat cushion and method for offloading pressure from skeletal bone prominences and encouraging proper postural alignment | 
        
          | US7140057B2
              (en)
            
            * | 2003-07-28 | 2006-11-28 | Aspen Seating, Llc | Reinforced and adjustable contoured seat cushion and method of reinforcing and adjusting the contoured seat cushion | 
        
          | US7373678B2
              (en)
            
            * | 2003-07-28 | 2008-05-20 | Aspen Seating, Llc | Seat cushion with adjustable contour and method of adjusting the contour of a seat cushion | 
        
          | US6990744B2
              (en)
            
            * | 2003-07-28 | 2006-01-31 | Aspen Seating, Llc | Apparatus and method for evaluating clearance from a contoured seat cushion | 
        
          | US8857914B2
              (en)
            
            * | 2012-04-30 | 2014-10-14 | Adams Mfg. Corp. | Seat for molded plastic chairs | 
        
          | US9289069B2
              (en) | 2012-04-30 | 2016-03-22 | Adams Mfg. Corp. | Seat for molded plastic chairs | 
        
          | US10555611B2
              (en) | 2013-12-06 | 2020-02-11 | Force 3 Innovations Inc. | Adjustable seating systems and associated structures | 
        
          | DE102014115643A1
              (de)
            
            * | 2014-10-28 | 2016-04-28 | Udo Gehrer | Möbel |