Inventor

TOYONAGA RYUYA

JP3 patents

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

DAINIPPON TORYO KK

2 patents

US4161457AJul 17, 1979

Process for preparing a divalent europium activated alkaline earth metal aluminate phosphor

DAINIPPON TORYO KK25 citations81

US4085351AApr 18, 1978

Gaseous discharge light emitting element

DAINIPPON TORYO KK23 citations80

JAPAN BROADCASTING CORP

1 patent

US4085350AApr 18, 1978

Gaseous discharge light emitting element

JAPAN BROADCASTING CORP6 citations60