Johnson Matthey plc 1817
- occupation:
- Gold assayer,
- Manufacturer of catalysts,
- Manufacturer of fine chemicals,
- Process technologists,
- Refiner of precious metals
- Nationality:
- British
- born in:
- Hatton Garden, City of London, London, Greater London, England, United Kingdom
1817 - Percival Norton Johnson establishes business as a London gold assayer;
1822 - premises at 79 Hatton Garden, London
1832-1835 - partnership with George Stokes; known as Johnson and Stokes;
1837 - partnership with W J Cock; known as Johnson and Cock;
1851 - George Matthey joins the company; known as Johnson and Matthey;
1860 - PNJohnson retires; partnership of George Matthey, John Sellon and Edward Matthew; known as Johnson Matthey and Company;
1891 - Johnson, Matthey and Company Limited formed on 11 April
1919 - Johnson, Matthey and Company, Inc formed; branch in Birmingham and Haydn Park Works
1981 - Johnson Matthey Public Limited Company formed 31 July
