This talk aims at presenting some collaborative research efforts and their benefits; between academia and industry, between engineering and philosophy, and between Europe and Japan, from my viewpoint as an information scientist and engineer. The main topic is an ontology (in the sense of information science) of artifact’s function. I present our experiences with building a functional ontology and its successful deployment in production companies in Japan (collaboration between academia (information science) and industry) and discuss its practical needs, the benefits of ontologies, and some lessons learned in the deployment. Then, I discuss engineering needs for philosophical analyses of function (collaboration between engineering and philosophy). Lastly, I introduce the on-going joint EU-funded project (called EuJoint) on ontologies between Europe and Japan based on collaboration between engineers and philosophers.