That in itself shouldn't cause much confusion, because we know (from Hoshino) that "if it doesn't say Ibanez" it's not an Ibanez.
You see, Fujigen did not make Ibanez-branded guitars exclusively.
It always had contracts with other distributors and even made non-branded guitars that could be sold by anyone willing to purchase them wholesale.
They are based in Japan, but also have a US subsidiary, Hoshino USA, headquartered in Bensalem, Pennsylvania.
Hoshino owns no manufacturing facilities beyond a small custom shop in California.
Through the 1970s and early/mid 1980s, Fujigen was the exclusive manufacturer of electric Ibanez guitars and basses.