Inventor
IWAMA KATSUAKI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “IWAMA KATSUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
5 patentsUS7023019B2Apr 4, 2006
Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD212 citations98
US7422504B2Sep 9, 2008
Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD71 citations97
US7294956B2Nov 13, 2007
Semiconductor light emitting element and light emitting device using this
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations89
US6528444B1Mar 4, 2003
Glass composition, stem and bulb for lamps
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations79
US6445119B1Sep 3, 2002
Combined light emitting discharge lamp and luminaire using such lamp
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations71
PANASONIC CORP
4 patentsUS7629620B2Dec 8, 2009
Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device
PANASONIC CORP19 citations92
US7592639B2Sep 22, 2009
Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device
PANASONIC CORP19 citations92
US7772769B2Aug 10, 2010
Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device
PANASONIC CORP3 citations62
USRE47453EJun 25, 2019
Luminescent layer and light-emitting semiconductor device
PANASONIC CORP0 citations52
MATSUSHITA ELECTRONICS CORP
3 patentsUS4705986ANov 10, 1987
High color rendering fluorescent lamp
MATSUSHITA ELECTRONICS CORP24 citations79
US4047069ASep 6, 1977
High-pressure mercury-vapor lamp having a plural phosphor coating
MATSUSHITA ELECTRONICS CORP20 citations79
US4032812AJun 28, 1977
Fluorescent high-pressure mercury-vapor lamp
MATSUSHITA ELECTRONICS CORP9 citations71