Roberto Nani

international patent classification (ipc) triz. super system macrovariable intensive innovation improvement creative extensive class constraint forecasting conflicting diffusion evolutionary phase migration subsystem-system-supersystem triplet 9-screen-diagram technological diffusion level query search engine query node ranking master and slave document rating cumulative ∆ cluster pioneer evolutionary phase temporal range vertical and horizontal rating ∆ cluster clustering hand-over moment key-word cluster patent clustering. level of inventiveness patent investigation triz teoria triz telaio tessile. problem solving knowledge management contradictions boolean combination conflicts symmetric matrix. potential model intrinsic and extrinsic characteristics. kinetic model global model international patent classification (ipc) time and space separation (convertible). energetic model small-medium enterprises (s-me) intellectual property enforcement emerging technologies patent data base (pdb) intellectual property density ipd logistic s-curves