Unlike most large pharmaceutical companies which are listed, the company is private and fully owned by the Boehringer, Liebrecht and von Baumbach families.[2] The company's key areas of interest are: respiratory diseases, metabolism, immunology, oncology and diseases of the central nervous system. Boehringer Ingelheim is a full member of the European Federation of Pharmaceutical Industries and Associations (EFPIA). The corporate logo of Boehringer Ingelheim depicts a stylized rendition of the central section of the imperial palace of Charlemagne.[3]