Inventor
YAMAURA KOZO
JP4 patents
Patents
4 patentsUS5857750AJan 12, 1999
Seat device
NHK SPRING CO LTD21 citations91
US5839782ANov 24, 1998
Torsion-bar equipped vibration absorbing-seat device
NHK SPRING CO LTD30 citations91
US5692727ADec 2, 1997
Seat device
NHK SPRING CO LTD4 citations61
US9308847B2Apr 12, 2016
Lumbar support operation member and vehicle seat
NHK SPRING CO LTD0 citations37