2005 Brevet – Richemont International – Device for controlling the axial position of the crown of a timepiece 12 mai 2005
1995 Brevet – Schindler Elevator (Inventio AG) – Safety device for multi-mobile elevator groups 17 octobre 1995
1992 Brevet – Schindler Elevator (Inventio AG) – Method and arrangement to allocate requested hall calls to the cabins of an elevator group 20 octobre 1992