Janssen is driven by dedication to product innovation, customer focus, and organizational excellence. Janssen was founded in 1953 by Dr. Paul Janssen, a leading Belgian researcher, pharmacologist and general practitioner. In 1958, Dr. Paul led a group of researchers who discovered HALDOL® (haloperidol), which would help change the way mental health patients were treated. Realizing that he needed the strength of a larger, multi-national company to continue this work, Dr. Paul and Janssen Pharmaceutica joined the Johnson & Johnson family of companies in 1961. A U.S. office opened in 1973, based in the Johnson & Johnson headquarters in New Brunswick, NJ. Later, Janssen moved to two leased buildings in Piscataway, NJ, where it stayed until 1992. Janssen's current home is on 270 acres in Titusville, New Jersey
