《And Suddenly the Inventor Appeared: TRIZ, the Theory of Inventive Problem Solving》by Genrich Altshuller
Book description:
This legendary book was first published in English in 1990. It has been re-translated and extensively revised, including material not found in the original translation. It is Altshuller's most popular book in Russia on how to become an inventor, and how to solve technical problems. The translator, Lev Shulyak, is himself an accomplished inventor, engineer and TRIZ expert.