Who designed the Shell pecten logo introduced in 1971?

Raymond Loewy designed the Shell pecten logo introduced in 1971. The celebrated industrial designer created the simplified red-and-yellow shell emblem for Royal Dutch Shell.

Shell had used shell imagery since the company’s early history, partly because the business name and trading activities were associated with seashells. Earlier badges were more detailed and realistic. Loewy’s version reduced the form to bold radial bands and a clean outline, making it recognizable on signs, service stations and packaging.

The 1971 redesign became one of the best-known examples of corporate identity design. Its strong colors also improved visibility and helped the emblem work without the company name beside it.

This question concerns the designer of the 1971 redesign, not the origin of Shell’s name or every earlier shell badge. Raymond Loewy also worked on many other famous industrial and transport designs, which sometimes causes the logo to be attributed to a different graphic designer.