[Purpose/significance] Talent is the main factor in technology research. R&D teamsare the focus of technology development in various fieldsandimportant manifestation of the competence of an institution. [Method/process]Based on Derwent Innovation Index (DII) patent documents, the rules for the disambiguation of patent inventors’ names weredefined, and the key R&D teams were identified by inventors clustering. Then, an empirical study was carried out on patents related to Digital Light Process (DLP) of 3D printing. [Result/conclusion]It is shown that the disambiguation of patent inventors’ names is helpful to accurately analyze the number of inventors’ patents.