Which retail brand was the first to trademark and popularize a neologism (newly created word) for its product category that later became a generic term in English language dictionaries?

In the world of retail marketing, language plays a crucial role in how products are positioned and perceived. Brands often innovate linguistically to create memorable impressions on consumers. This trivia question focuses on a significant linguistic innovation in advertising that created a whole new category of product terminology. Test your knowledge of how language evolution intersects with product marketing!

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Xerox (turning a brand name into the verb 'to xerox')
Kleenex (creating a proprietary eponym for facial tissues)
Google (transforming a brand into the verb 'to google')
Sony Walkman (inventing the term 'walkman' for portable music players)