Minnesota-based conglomerate 3M starts us off at number 10. Interbrand’s valuation of the company’s brand has risen 18% since last year to $4.7 billion. The company’s expansive strategy appears to be continuing, since it announced Friday that it would acquire industrial ceramics company Ceradyne for $860 million. Investors have responded with relative optimism to the company’s confidence, and 3M is currently trading at around $95 per share, an 18.7% increase over the past year.