Jean Adrien Philippe was French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 horologist and cofounder of watchmaker

Watchmaker

A watchmaker is an artisan who makes and repairs watches. Since virtually all watches are now factory made, most modern watchmakers solely repair watches. However, originally they were master craftsmen who built watches, including all their parts, by hand...

 Patek Philippe & Co.

Patek Philippe & Co.

Patek Philippe & Co. is a Swiss luxury watch manufacturer located in Geneva and the Vallée de Joux.-History:Polish watchmaker Antoni Patek started making pocket watches in 1839 in Geneva, along with his fellow Polish migrant Franciszek Czapek. They separated in 1844, and in 1845 Patek joined with...

 of Geneva

Geneva

Geneva In the national languages of Switzerland the city is known as Genf , Ginevra and Genevra is the second-most-populous city in Switzerland and is the most populous city of Romandie, the French-speaking part of Switzerland...

, Switzerland

Switzerland

Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

.

In 1842 Adrien Philippe invented a mechanism for watch

Watch

A watch is a small timepiece, typically worn either on the wrist or attached on a chain and carried in a pocket, with wristwatches being the most common type of watch used today. They evolved in the 17th century from spring powered clocks, which appeared in the 15th century. The first watches were...

es which allowed them to be wound and set by means of crown rather than a key. His patented invention earned him a Gold Medal at the French Industrial Exposition of 1844

French Industrial Exposition of 1844

The French Industrial Exposition of 1844, held in a temporary structure on the Champs-Élysées in Paris, was one in a series of eleven French national industrial expositions held to encourage improvements in progressive agriculture and in technology, that had their origins in 1798...

 (World's Fair). At the Exhibition Adrien Philippe first met Antoni Patek

Antoni Patek

Antoni Norbert Patek , is a Polish pioneer in watchmaking and a creator of Patek Philippe & Co. one of the most famous watchmaker companies.- Early life :...

 and a year later became head watchmaker at Patek & Co. in Geneva under an agreement that entitled him to one-third of all company profits.

Adrien Philippe proved to be very capable at his craft and a product innovator whose value to the firm was such that by 1851 he was made a full partner and the firm began operating as Patek Philippe & Co. In 1863 he published a book in Geneva and Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

on the workings of pocket watches titled Les montres sans clef.

His partner Antoni Patek died in 1877 and in 1891 the 76-year-old Adrien Philippe handed over the day-to-day management of the business to his son Joseph Emile Philippe and Francois Antoine Conty.

Jean Adrien Philippe died in 1894 and was buried in St-Georges Cemetery in Geneva.