In contrast with the previous generation model, the redesigned Lexus SC was intended as a convertible from its inception. The development team was led by chief engineer Yasushi Nakagawa from 1996 to 2000. Lexus designers from Europe and Japan worked together to create a streamlined design. A design theme was chosen in 1997 developed by Sotiris Kovos, who in return was named chief designer. Led by Kovos, designers travelled to the Côte d'Azur to develop the vehicle's exterior shape, and studied the region's architecture, lifestyle, and harbors. The resulting convertible of 1998 received character lines similar to the region's yachts, in contrast with traditional waveform lines. The vehicle's side profile, the product of extensive wind tunnel testing, was intended to channel air around the passenger compartment at high speed during top-down driving. Design patents were filed in Japan, at the Japan Patent Office on 14 June 1999 under patent number 1095312.