The idea is that its removal from the body and purification makes it into something different that can be patented.

VOA: special.2010.04.09

Finally, it was Robert Plath, who was an airline pilot, who invented a new, wheeled suitcase, which he patented in 1991.

后来一个叫罗伯特·普拉斯的飞行员，发明了一种滚轮行李箱，并且在1991年取得专利权。

耶鲁公开课 - 金融市场课程节选

An estimated twenty percent of human genes have been patented in the United States.

VOA: special.2010.04.09

But Woods notes that algae, using Algenol's patented process, produces eight times more energy than the energy used to make it.

VOA: standard.2009.09.02