Inventor

HIROTANI MASUMI

JP3 patents

⚠️ This page may combine multiple inventors who share the name “HIROTANI MASUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DAIDO STEEL CO LTD

2 patents

US6570191B2May 27, 2003

Surface-light-emitting device including AlGalnP and AlGaAs multi-film reflecting layers

DAIDO STEEL CO LTD5 citations57

US9595635B2Mar 14, 2017

Point source light-emitting diode

DAIDO STEEL CO LTD0 citations37

YAMAUCHI NORIKATSU

1 patent

US5260589ANov 9, 1993

Semiconductor device having reflecting layers made of varying unit semiconductors

YAMAUCHI NORIKATSU15 citations63