Inventor
OBA MASAO
JP9 patents
⚠️ This page may combine multiple inventors who share the name “OBA MASAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO KEIKI KK
7 patentsUS5023887AJun 11, 1991
Data transmission system using spread spectrum communication
TOKYO KEIKI KK97 citations95
US5128972AJul 7, 1992
Memory package system
TOKYO KEIKI KK24 citations92
US4953123AAug 28, 1990
Memory system to perform data transfer by a contactless electromagnetic induction coupling system using induction coils
TOKYO KEIKI KK46 citations92
US4856177AAug 15, 1989
Automatic tool changer with electromagnetically readable tool holder having an electromagnetically coupling stopper for numerical control
TOKYO KEIKI KK37 citations92
US4821198AApr 11, 1989
Apparatus for reading out work machining data written in a memory module attached to a pallet when the pallet is moved to a machine tool
TOKYO KEIKI KK52 citations92
US4855994AAug 8, 1989
Memory package system for performing data transmission between memory module and write/read unit by electromagnetic induction coupling
TOKYO KEIKI KK16 citations73
US4724372AFeb 9, 1988
Speed control apparatus of hydraulic actuator
TOKYO KEIKI KK9 citations73