History of the company since 1937


Joseph Bonvallat began his activity in 1937 by buying a farm, a chapel and an aviary. Accompanied by four workers, he begins his activity in the polishing, chrome-plating of watch boxes.

By his energy and his good work, Joseph Bonvallat increases his production and acquires new customers. From its family house, he build a modern factory and reaching up to 50 workers. His fleet of machines increases likewise; These bring to the quality already , of its termination, a superior aspect and a good fame.

In 1945, is added another activity. This is the manufacture of jewelry, watch bracelets with a gold plated workshop. This activity is even known abroad.

All these activities lead to the expansion of the house. In the property of Joseph Bonvallat, there is no longer a small factory, but a large building of more than 1’200m2, measuring to other companies of the city a longer epic.

In 1965, the company’s activities continued, to such an extent that Joseph Bonvallat had to build a new building entirely devoted to electroplating and diamond-cutting. This expansion allows to reach 2’000m2 of operating area.

In 1972, the formation of a (LTD) limited company under the name Joseph Bonvallat SA took place.

In 1983, Michel Bonvallat, the founder’s last son, entered the company after obtaining a degree in economics. He will then learn electroplast to have technical bases in electroplating.

In 1985, Michel Bonvallat took over the management of the company following the death of Joseph Bonvallat. Marthe Bonvallat, wife of the founder, is appointed chair of the board of directors.

In 1990, wishing to modernize its production tool, the company made the decision to integrate CNC technology into its production.

In 1998, the electroplating building is renovated and a new galvanic treatment line is added as well as an automatic washing line for polishing.

In 2012, anxious to meet new customer requirements, major investments are made to modernize the machine fleet.

Nearly 80 years after the creation of the company, the third generation makes its entry into society with the objective of keeping the same corporate values.


Today, the company continues to invest in its production tool in order to be as competitive as possible and meet ever shorter customer deadlines.

Joseph Bonvallat SA | Rue Achille-Merguin 25 | CH-2900 Porrentruy | +41 32 466 24 31 | info@jobo.ch

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