Inventor
YOKOYAMA KAZUAKI
JP25 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA KAZUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ENPLAS CORP
18 patentsUS5971559AOct 26, 1999
Surface light source device
ENPLAS CORP211 citations99
US5899552AMay 4, 1999
Surface light source device
ENPLAS CORP159 citations99
US5779338AJul 14, 1998
Surface light source device
ENPLAS CORP195 citations99
US5718497AFeb 17, 1998
Surface light source device
ENPLAS CORP144 citations99
US5600455AFeb 4, 1997
Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface
ENPLAS CORP231 citations99
US5584556ADec 17, 1996
Surface light source device
ENPLAS CORP325 citations99
US5575549ANov 19, 1996
Surface light source device
ENPLAS CORP157 citations99
US5134549AJul 28, 1992
Surface light source device
ENPLAS CORP336 citations99
US6290364B1Sep 18, 2001
Surface light source device
ENPLAS CORP67 citations96
US5769522AJun 23, 1998
Surface light source device
ENPLAS CORP59 citations96
US5450292ASep 12, 1995
Surface light source device
ENPLAS CORP56 citations96
US5414599AMay 9, 1995
Surface light source device
ENPLAS CORP48 citations96
US5402324AMar 28, 1995
Surface illuminant device
ENPLAS CORP67 citations96
US5818555AOct 6, 1998
Surface light source device
ENPLAS CORP64 citations95
US6152570ANov 28, 2000
Surface light source device
ENPLAS CORP22 citations92
US5810464ASep 22, 1998
Surface light source device of side light type
ENPLAS CORP53 citations92
US5655827AAug 12, 1997
Surface light source device
ENPLAS CORP38 citations92
US5988826ANov 23, 1999
Surface light source device
ENPLAS CORP5 citations63