Inventor
KATSUYAMA TSUTOMU
JP9 patents
⚠️ This page may combine multiple inventors who share the name “KATSUYAMA TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKI ELECTRIC IND CO LTD
6 patentsUS5844868ADec 1, 1998
Digital-analog shared circuit in dual mode radio equipment
OKI ELECTRIC IND CO LTD113 citations96
US6011980AJan 4, 2000
Wireless telecommunication equipment
OKI ELECTRIC IND CO LTD150 citations95
US5475875ADec 12, 1995
Antenna switching circuit employing FETs for reduced power consumption
OKI ELECTRIC IND CO LTD30 citations92
US4870698ASep 26, 1989
Output power control circuit for a mobile radio apparatus
OKI ELECTRIC IND CO LTD124 citations92
US6112070AAug 29, 2000
High frequency receiving circuit for mobile communication apparatus
OKI ELECTRIC IND CO LTD36 citations91
US6041081AMar 21, 2000
CDMA transmitter having a variable gain circuit inserted between a transmitter mixer and a transmitter antenna
OKI ELECTRIC IND CO LTD36 citations90