Janssen Pharmaceuticals is a pharmaceutical company headquartered in Beerse, Belgium, and wholly-owned by Johnson & Johnson. It was founded in 1953 by Paul Janssen. In 1961, Janssen Pharmaceuticals was purchased by New Jersey-based American corporation Johnson & Johnson, and became part of Johnson & Johnson Pharmaceutical Research and Development (J&J PRD), now renamed to Janssen Research and Development (JRD), which conducts research and development activities related to a wide range of human medical disorders, including mental illness, neurological disorders, anesthesia and analgesia, gastrointestinal disorders, fungal infection, HIV/AIDS, allergies and cancer. Janssen and Ortho-McNeil Pharmaceutical have been placed in the Ortho-McNeil-Janssen group within Johnson & Johnson Company. Subsidiaries Actelion Cilag AG Janssen Biotech (formerly Centocor) Janssen Vaccines (formerly Crucell) Tibotec History The early roots of what would become Janssen Pharmaceuticals date back to 1933. In 1933, Constant Janssen, the father of Paul Janssen, acquired the right to distribute the pharmaceutical products of Richter, a Hungarian pharmaceutical company, for Belgium, the Netherlands and Belgian Congo. On 23 October 1934, he founded the N.V. Produkten Richter in Turnhout. In 1937, Constant Janssen acquired an old factory building in the Statiestraat 78 in Turnhout for his growing company, which he expanded during World War II into a four-story building. Still a student, Paul Janssen assisted in the development of paracetamol (USP: acetaminophen, often referred to generically under the trademark Tylenol) under the name Perdolan, which would later become well-known. After the war, the name for the company products was changed to Eupharma, although the company name Richter would remain until 1956. Paul Janssen founded his own research laboratory in 1953 on the third floor of the building in the Statiestraat, still within the Richter-Eurpharma company of his father. In 1955, he and his team developed their first drug, Neomeritine (ambucetamide), an antispasmodic found to be particularly effective for the relief of menstrual pain. On 5 April 1956, the name of the company was changed to NV Laboratoria Pharmaceutica C. Janssen (named after Constant Janssen). On 27 April 1957, the company opened a new research facility in Beerse, but the move to Beerse would not be completed until 1971–1972. On 2 May 1958, the research department in Beerse became a separate legal entity, the N.V. Research Laboratorium C. Janssen. On 25 October 1961, the company was acquired by the American corporation Johnson & Johnson. The negotiations with Johnson & Johnson were led by Frans Van