Inventor

OBA RYOHEI

JP3 patents

⚠️ This page may combine multiple inventors who share the name “OBA RYOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON TELEGRAPH & TELEPHONE

1 patent

US4498195AFeb 5, 1985

Radio interference detection device for use in a multi-channel access angle-modulation radio system

NIPPON TELEGRAPH & TELEPHONE20 citations75

TOSHIBA KK

1 patent

US4866415ASep 12, 1989

Tone signal generating system for use in communication apparatus

TOSHIBA KK4 citations58

DENSO CORP

1 patent

US10998781B2May 4, 2021

Rotating electric machine

DENSO CORP0 citations48