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US sentences ‘greedy’ chemical engineer to 15 years in prison for selling trade secrets to China

Naturalised US citizen Walter Liew also fined US$28 million after stealing DuPont’s pigment technology in rare conviction for economic espionage

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File photo of Robert Maegerl walking out of a federal courthouse. Maegerle, a retired DuPont engineer, was convicted of economic espionage charges along with chemical engineer Walter Liew in March. Photo: AP
Associated Press

A US federal judge on Thursday sentenced a California chemical engineer to 15 years in prison and fined him US$28.3 million for selling China a secret recipe to a widely used white pigment.

US District Court Judge Jeffrey White in Oakland said Walter Liew, a naturalised US citizen, had “turned against his adopted country over greed.”

A jury previously convicted Liew, 56, of receiving US$28 million from companies controlled by the Chinese government in exchange for DuPont’s pigment technology for making cars, paper and a long list of everyday items whiter.

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Along with the US$28.3 million Liew was ordered to forfeit and pay to DuPont, the engineering company launched by him and his wife was fined US$18.9 million.

White expressed doubt that Liew would pay back much of his debt.

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Christina Liew has pleaded not guilty to obstruction of justice and other charges. Photo: AP
Christina Liew has pleaded not guilty to obstruction of justice and other charges. Photo: AP
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