Afterwards Fukasawa worked as a designer at Seiko-Epson Corp. In 1989, he moved to the United States. In San Francisco he joined a small office that had employed 15 persons - "ID two", the predecessor to "IDEO", which now has 450 staff worldwide. In 1996, he helped set up "IDEO" in Japan.
In 2003 he established "Naoto Fukasawa Design" in Tokyo. Fukasawa joined the advisory board of the Japanese firm "Muji". In the same year he set up a new product brand "±0" which launches products in the area of home electric appliances and interior accessories.
Naoto Fukasawa's design portfolio includes his wall mounted cd player / products for Muji, and Infobar / auKDDI, Issey Miyake and Seiko. Other than Japanese projects, there is a range of projects with famous manufacturers as Driade, Magis, B&B Italia, Danese, Artemide.
Naoto Fukasawa is a lecturer in the product design department at Musashino Art University and Tama Art University in Tokyo.
His designs have won more than 60 design awards, such as the Mainichi Design Award in Japan, the iF Design Award and the Good Design Award, Japan.