Inventor
TSUKADA NOBUO
JP14 patents
⚠️ This page may combine multiple inventors who share the name “TSUKADA NOBUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO INSTR & ELECTRONICS
7 patentsUS4721058AJan 26, 1988
Paper cutting unit of automatic drawing machines
SEIKO INSTR & ELECTRONICS84 citations94
US4023055AMay 10, 1977
Mounting device for a quartz tuning fork
SEIKO INSTR & ELECTRONICS7 citations73
US4012899AMar 22, 1977
Micro motor for a timepiece
SEIKO INSTR & ELECTRONICS8 citations72
US4114365ASep 19, 1978
Battery lead plate member for an electronic wrist watch
SEIKO INSTR & ELECTRONICS8 citations69
US4447163AMay 8, 1984
Stem mechanism for a watch
SEIKO INSTR & ELECTRONICS4 citations61
US4645356AFeb 24, 1987
Wristwatch
SEIKO INSTR & ELECTRONICS0 citations50
US4102123AJul 25, 1978
Bearing for a timepiece train
SEIKO INSTR & ELECTRONICS0 citations37
SEIKO INSTR INC
6 patentsUS5079470AJan 7, 1992
Standing-wave type ultrasonic motor and timepiece
SEIKO INSTR INC24 citations92
US5025186AJun 18, 1991
Ultrasonic motor
SEIKO INSTR INC27 citations92
US5006746AApr 9, 1991
Travelling-wave motor
SEIKO INSTR INC36 citations92
US5254899AOct 19, 1993
Micro-traveller with ultrasonic motor
SEIKO INSTR INC9 citations73
US5056201AOct 15, 1991
Method of making a travelling-wave motor
SEIKO INSTR INC15 citations73
US5043956AAug 27, 1991
Wristwatch with oscillation alarm
SEIKO INSTR INC10 citations68