Abstract: The paper first points out the importance of visualizing the invention process. The visualization can be facilitated by knowledge representation methods, as is pioneered in the connectionist’s analyses of creative processes. Then a weighted concept map suitable for describing invention process is designed, called invention-oriented concept map (IOCM), with its elements (concepts and relations), structure and measurement of element weights analyzed. Finally, the general process of invention and an inventor’s tacit strategies are described via dynamic construction of his IOCM, as is illustrated and justified by a real-world invention example.