Inventor
DOUZONO SHIGETAKA
JP5 patents
⚠️ This page may combine multiple inventors who share the name “DOUZONO SHIGETAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
4 patentsUS6686549B2Feb 3, 2004
Illuminated keyboard switch
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD85 citations96
US6670565B2Dec 30, 2003
Illuminated button switch
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations92
US6837604B2Jan 4, 2005
Lighting apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations72
US6764191B2Jul 20, 2004
Illumination type keyboard
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations72