In 1970 the General Assembly of the "Hotelbetriebs-Aktiengesellschaft" voted to change its name to "Kempinski Hotelbetriebs-Aktiengesellschaft". In the same year, a long-lasting partnership was established with Lufthansa in the form of a 50-per cent participation in the Hotel Vier Jahreszeiten in Munich, in which Lufthansa already had a holding. In 1977 the hotel company received its present name as "Kempinski Aktiengesellschaft (AG)". At the same time, the Kempinski Hotel Frankfurt Gravenbruch was added to the group's portfolio as its fourth German hotel.