Constant Janssen

Dr. Jan Constant Janssen (18 September 1895 in Belgium, Vlimmeren – 15 April 1970 in Antwerp) was a Belgian physician and businessman.wikipedia
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Paul Janssen

Their oldest son, Paul Janssen, would become one of the most successful scientists in pharmaceutics.
Paul Janssen was the son of Constant Janssen and Margriet Fleerackers.

Turnhout

Turnhout, BelgiumStrip Turnhout
On 16 April 1925, he married Margriet Fleerackers (Turnhout, 5 January 1897-Vosselaar, 23 September 1973), together they had four children. 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-storey building.

Janssen Pharmaceutica

JanssenJanssen PharmaceuticalsJanssen Pharmaceutical Companies
After World War II, the brandname of the products was changed into Eupharma, and later the company would evolve into Janssen Pharmaceutica.
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.

Belgium

BelgianBELKingdom of Belgium
Dr. Jan Constant Janssen (18 September 1895 in Belgium, Vlimmeren – 15 April 1970 in Antwerp) was a Belgian physician and businessman.

Beerse

Beerse, BelgiumVlimmeren
Dr. Jan Constant Janssen (18 September 1895 in Belgium, Vlimmeren – 15 April 1970 in Antwerp) was a Belgian physician and businessman.

Antwerp

Antwerp, BelgiumAntwerpenAnvers
Dr. Jan Constant Janssen (18 September 1895 in Belgium, Vlimmeren – 15 April 1970 in Antwerp) was a Belgian physician and businessman.

Hoogstraten

Duchy of HoogstratenMeerMeersel-Dreef
He went to high school in Hoogstraten and studied medicine at the Catholic University of Leuven and the University of Ghent.

Catholic University of Leuven (1834–1968)

Catholic University of LeuvenCatholic University of LouvainUniversity of Louvain
He went to high school in Hoogstraten and studied medicine at the Catholic University of Leuven and the University of Ghent.

Vosselaar

On 16 April 1925, he married Margriet Fleerackers (Turnhout, 5 January 1897-Vosselaar, 23 September 1973), together they had four children.

Vienna

Vienna, AustriaWienViennese
In 1921, he met Ladislas Richter in Vienna, who was the son of Gedeon Richter, who owned a pharmaceutical factory in Budapest, Hungary.

Budapest

Budapest, HungaryPestBuda
In 1921, he met Ladislas Richter in Vienna, who was the son of Gedeon Richter, who owned a pharmaceutical factory in Budapest, Hungary.

Hungary

HungarianHUNRepublic of Hungary
In 1921, he met Ladislas Richter in Vienna, who was the son of Gedeon Richter, who owned a pharmaceutical factory in Budapest, Hungary. In 1933, he acquired the right to distribute the pharmaceutical products of Richter, the Hungarian pharmaceutical company, for Belgium, the Netherlands and Belgian Congo.

Gedeon Richter (company)

Gedeon Richter Plc.Gedeon Richter plcGedeon Richter Ltd.
In 1933, he acquired the right to distribute the pharmaceutical products of Richter, the Hungarian pharmaceutical company, for Belgium, the Netherlands and Belgian Congo.

Netherlands

DutchThe NetherlandsHolland
In 1933, he acquired the right to distribute the pharmaceutical products of Richter, the Hungarian pharmaceutical company, for Belgium, the Netherlands and Belgian Congo.

Belgian Congo

CongoBelgian colonial ruleCongolese
In 1933, he acquired the right to distribute the pharmaceutical products of Richter, the Hungarian pharmaceutical company, for Belgium, the Netherlands and Belgian Congo.

World War II

Second World WarwarWWII
After World War II, the brandname of the products was changed into Eupharma, and later the company would evolve into Janssen Pharmaceutica. 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-storey building.

Paracetamol

acetaminophenPanadolTylenol PM
Still a medical student, his son Paul Janssen helped with the development of Perdolan.

Johnson & Johnson

Johnson and JohnsonJohnson & Johnson CorporationBiosense Webster
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.

Frans Van den Bergh

Van den Bergh, Frans
For these reasons, he was asked by the parents of Dr. Paul Janssen, Constant Janssen and Margriet Fleerackers, to help them manage the growing family business with its five branches.