Inventor
IKENISHI MASATAKA
JP10 patents
⚠️ This page may combine multiple inventors who share the name “IKENISHI MASATAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO INSTR & ELECTRONICS
9 patentsUS4241433ADec 23, 1980
Electronic watch
SEIKO INSTR & ELECTRONICS12 citations71
US4274150AJun 16, 1981
Electronic watch
SEIKO INSTR & ELECTRONICS6 citations60
US4204395AMay 27, 1980
Calendar mechanism of a portable timepiece
SEIKO INSTR & ELECTRONICS2 citations59
US4095406AJun 20, 1978
Second adjustment system in an electronic watch
SEIKO INSTR & ELECTRONICS2 citations59
US4074093AFeb 14, 1978
Switching mechanism in an electronic watch
SEIKO INSTR & ELECTRONICS2 citations59
US4057698ANov 8, 1977
Switching mechanism of a timepiece
SEIKO INSTR & ELECTRONICS3 citations56
US4078373AMar 14, 1978
Marking display assembly in a watch movement
SEIKO INSTR & ELECTRONICS2 citations55
US4216646AAug 12, 1980
Electronic watch
SEIKO INSTR & ELECTRONICS0 citations49
US4125994ANov 21, 1978
Train structure of a timepiece
SEIKO INSTR & ELECTRONICS1 citations45