Inventor
FUJITA HIRO
7 patents
⚠️ This page may combine multiple inventors who share the name “FUJITA HIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CITIZEN WATCH CO LTD
6 patentsUS4443062AApr 17, 1984
Multi-layer display device with nonactive display element groups
CITIZEN WATCH CO LTD59 citations95
US4244043AJan 6, 1981
Frequency division system
CITIZEN WATCH CO LTD38 citations89
US4264967AApr 28, 1981
Unit time producing system
CITIZEN WATCH CO LTD21 citations81
US4465999AAug 14, 1984
Matrix driving method for electro-optical display device
CITIZEN WATCH CO LTD19 citations73
US4241435ADec 23, 1980
Electronic timepiece oscillator circuit
CITIZEN WATCH CO LTD9 citations73
US4024416AMay 17, 1977
Method for controlling frequency of electrical oscillations and frequency standard for electronic timepiece
CITIZEN WATCH CO LTD13 citations73