Unlike water trickling down through one of its filters, earnings have defied gravity over the last four years at CUNO Inc. in Meriden. The maker of filters — for brewers, for oil companies, for ...

NEW YORK – 3M Co. (MMM) Thursday said it would acquire filtration products maker CUNO Inc. (CUNO) for about $1.35 billion in a move to capitalize on the growing need for water purification globally.

WASHINGTON (MarketWatch) -- 3M said it's reached a deal to acquire Cuno Inc. in a deal carrying a total value of $1.35 billion. The Dow Industrials component is paying $72 a share in cash for Cuno's ...