La storia della chiusura automatica continua per abiti inventata da Elias Howe e di come la città giapponese di Kuroba sia diventata dopo la Seconda Guerra Mondiale la capitale mondiale delle zip grazie allo spirito imprenditoriale di Tadao Yoshida e della sua azienda, la Yoshida Kogyo Kabushikigaisha ovvero Azienda manifatturiera Yoshida S.p.A. meglio conosciuta come YKK.
Yoshida had grown up in Kurobe the son of an itinerant bird collector. After a slew of business failures he moved to Tokyo and, seeing the growth of the zipper market, opened his own zipper firm in 1934. The success of Talon was known around the world and Yoshida shamelessly copied its products and machines, while adding some distinctive touches–like using aluminum instead of copper. When World War II began, he kept in business by supplying the Japanese Imperial Navy with zippers, and when his factory was burned to the ground during the firebombing of Tokyo in 1945 he relocated to his hometown of Kurobe and began all over again.
Yoshida's remarkable stick–to–itiveness had been spurred on by reading Andrew Carnegie's The Gospel of Wealth. Now, as if infused with the reciprocal force of the zipper, he too created a quasi-philosophy that he termed the Cycle of Goodness™. This stated that "no one prospers without rendering benefit to others." It was a simple but enlightened creed that suggested that well-treated workers would create a better product, a better product would benefit customers, and satisfied customers would, in turn, benefit YKK. In short, Yoshida wanted to use his zippers to bind together not only clothes but also the very fabric of society.