Philip J. Ryffel is Business Control’s operative Managing Director. His field of activity is the management of special projects and the handling of business investigations.

06 Jan 1995
The single proprietorship “Privatdetektei Ryffel” (private detective agency Ryffel) is founded by Philip J. Ryffel and registered with the Trade Register of the Canton of Zurich.

27 Jul 2000
The Privatdetektei Ryffel is expanding and moving to the town of Zug. The branch office in Zurich is run by Peter C. Stelzer, Managing Director.