Iue then took the lead in building a wooden boat factory for Matsushita upon request of the Japanese military during World War II.

Upon Japan's defeat in the war, the General Headquarters of Allied Forces requested a change in the management of Matsushita, with one of its senior executives required to step down.

The bank president forgave Iue's debt, and knowing his prior talent working at Matsushita, offered him starting capital for a new business.

[citation needed] Konosuke Matsushita would lend Iue an unused plant in Hyogo Prefecture, where he followed in his brother-in-law's footsteps by initially making bicycle lamps and captured 60% of the Japanese market.

After a series of unprofitable quarters, Sanyo's story would go full circle as it was acquired in 2009 by Panasonic Corporation, the firm where Iue originally worked at alongside his brother-in-law, Konosuke Matsushita.