Janssen Pharmaceuticals
company
Johnson & Johnson Innovative Medicine (formerly Janssen Pharmaceuticals) is a Belgian 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 the New Jersey–based American corporation Johnson & Johnson. It became part of Johnson & Johnson Pharmaceutical Research and Development (J&J PRD), which was later renamed Janssen Research and Development, LLC (JRD). This division 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 infections, HIV/AIDS, allergies, and cancer. Janssen and Ortho-McNeil Pharmaceutical were later placed into the Ortho-McNeil-Janssen group within Johnson & Johnson.
Subsidiaries
Actelion
Cilag AG
Janssen Biotech (formerly Centocor)
Janssen Vaccines (formerly Crucell)
Tibotec
History
The roots of what would become Janssen Pharmaceuticals date back to 1933. That year, Constant Janssen, the father of Paul Janssen, acquired the rights to distribute the pharmaceutical products of Richter, a Hungarian pharmaceutical company, across Belgium, the Netherlands, and the Belgian Congo. On 23 October 1934, he founded N.V. Produkten Richter in Turnhout. In 1937, Constant Janssen acquired an old factory building at Statiestraat 78 in Turnhout for his growing company, which he expanded into a four-story building during World War II. While still a student, Paul Janssen assisted in developing paracetamol (USP: acetaminophen, often referred to generically under the trademark Tylenol) under the name Perdolan, which later became well-known.
“Janssen Pharmaceuticals” enters the record as company. Crown Archives preserves that source wording while asking what Janssen, Pharmaceuticals and company can confirm, complicate or overturn.
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Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Sep 24, 2026. The linked authority identifier is Q903523. VIAF identifies the subject as 125497068. The Library of Congress control number is n81042316. 4 of 6 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1953, 1961, 1933 and 1934.
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This entry incorporates text from “Janssen Pharmaceuticals” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.