Inventor
FUKUZAWA KEIJI
JP22 patents
⚠️ This page may combine multiple inventors who share the name “FUKUZAWA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
20 patentsUS5301352AApr 5, 1994
Satellite broadcast receiving system and change-over divider for use in same
SONY CORP131 citations98
US5565805AOct 15, 1996
Change-over divider for use in satellite broadcast receiving system
SONY CORP61 citations96
US6779195B2Aug 17, 2004
Signal processing apparatus and signal receiving apparatus
SONY CORP32 citations92
US6046545AApr 4, 2000
Light source apparatus using coaxial waveguide
SONY CORP28 citations92
US5926744AJul 20, 1999
Receiving apparatus, receiving method, and terminal unit
SONY CORP26 citations92
US5675348AOct 7, 1997
Feedome, primary radiator, and antenna for microwave
SONY CORP21 citations92
US5384557AJan 24, 1995
Polarization separator and waveguide-microstrip line mode transformer for microwave apparatus
SONY CORP34 citations92
US5087920AFeb 11, 1992
Microwave antenna
SONY CORP63 citations92
US4792810ADec 20, 1988
Microwave antenna
SONY CORP27 citations92
US4914449AApr 3, 1990
Microwave antenna structure with intergral radome and rear cover
SONY CORP39 citations91
US7263713B2Aug 28, 2007
Television signal distributor apparatus, receiver apparatus, television signal transmission system and method
SONY CORP18 citations83
US7779442B1Aug 17, 2010
Information distribution system
SONY CORP8 citations82
US5670902ASep 23, 1997
Satellite broadcast receiving system and change-over divider for use in same
SONY CORP17 citations82
US4827276AMay 2, 1989
Microwave antenna
SONY CORP22 citations81
US7471251B2Dec 30, 2008
Radio communication system and communication method therefor
SONY CORP5 citations74
US5438340AAug 1, 1995
Elliptical feedhorn and parabolic reflector with perpendicular major axes
SONY CORP14 citations74
US5276410AJan 4, 1994
Circular to linear polarization converter
SONY CORP18 citations74
US6252556B1Jun 26, 2001
Microwave planar array antenna
SONY CORP12 citations73
US4570165AFeb 11, 1986
Adjustable loop and dipole antenna
SONY CORP19 citations71
US7760148B2Jul 20, 2010
Radio communication system and communication method therefor
SONY CORP1 citations52