Inventor
YOKOYAMA AKIO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA AKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
9 patentsUS6930544B2Aug 16, 2005
Filter
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations91
US6512414B2Jan 28, 2003
Automatic filter tuning control system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations91
US7084797B2Aug 1, 2006
Delta sigma modulating apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations83
US6954161B2Oct 11, 2005
Cascade delta-sigma modulator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations83
US7215195B2May 8, 2007
Differential amplifier and operational amplifier
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations72
US5012201AApr 30, 1991
Variable impedance circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations72
US7271652B2Sep 18, 2007
Differential amplifier and operational amplifier
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations61
US7116170B2Oct 3, 2006
Differential amplifier and calculation amplifier
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations61
US7405636B2Jul 29, 2008
Passive polyphase filter
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations57