Which scientific company changed its logo in 1991 to incorporate the molecular structure of its flagship product, adding a visual reference to the actual science behind their innovation?

Many scientific products and companies have fascinating histories behind their iconic logos and branding. This trivia question focuses on one of the most revolutionary scientific products of the 20th century that transformed multiple industries and whose logo underwent a subtle but significant change to reflect its scientific foundation. Test your knowledge about this famous scientific brand's visual identity!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Pfizer - added the DNA double helix to represent genetic research
Gore-Tex - added the polymer structure of expanded polytetrafluoroethylene (ePTFE)
Corning - added the silica tetrahedron structure to represent glass composition
DuPont - added the nylon polymer chain to their corporate emblem