Inventor
KASHIWADA YASUTOSHI
9 patents
⚠️ This page may combine multiple inventors who share the name “KASHIWADA YASUTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS4775980AOct 4, 1988
Distributed-feedback semiconductor laser device
HITACHI LTD28 citations92
US4665528AMay 12, 1987
Distributed-feedback semiconductor laser device
HITACHI LTD25 citations92
US4506366AMar 19, 1985
Semiconductor laser device
HITACHI LTD29 citations92
US4432091AFeb 14, 1984
Semiconductor laser device
HITACHI LTD20 citations82
US5136601AAug 4, 1992
Semiconductor laser
HITACHI LTD8 citations73
US4630279ADec 16, 1986
Buried heterojunction laser
HITACHI LTD11 citations73
US4149989AApr 17, 1979
Process for producing phosphors
HITACHI LTD12 citations72
US4563764AJan 7, 1986
Semiconductor laser device
HITACHI LTD3 citations62