01.2010
The PRIVATDETEKTEI RYFFEL AG is celebrating the company jubilee looking back on 15 years of successful business.
09.2003
The company founder Philip J. Ryffel is elected president in the General Assembly of the World Investigators Network W.I.N. in Reno (USA). For the first time, a Swiss is thus head of a world detective organization for one year.
08.2002
Philip J. Ryffel is being distinguished with the “Award of Excellence” by the World Investigators Network W.I.N.
06.2002
Philip J. Ryffel is founding BUSINESS CONTROL SWITZERLAND as a new company. The place of business is Zug. Peter C.Stelzer is taking over the operative management for PRIVATDETEKTEI RYFFEL AG Zurich.
04.2002
The sole proprietorship PRIVATDETEKTEI RYFFEL becomes shareholder with Peter C.Stelzer as associate.
07.2000
PRIVATDETEKTEI RYFFEL (PRIVATE INVESTIGATORS RYFFEL) is expanding. It is moving to Zug. Peter Stelzer is Managing Director of the Zurich branch.
09.1998
Philip J. Ryffel is elected” Investigator of the Year” by the World Investigators Network (W.I.N.).
01.1995
Philip J. Ryffel is founding the sole proprietorship PRIVATDETEKTEI RYFFEL including entry into the Trade Register of the Canton of Zurich.