Felix Hoffmann

The trademark aspirin is derived from A=Acetyl and "Spirsaeure" or asalicycylic acid.

1886   By chance two doctors prescribed acetaiid for a patient

1891  Bayer employed as many as 90 chemists in the north of Koeln

1897  A chemist named Felix Hoffmann developed aspirin in the laboratory of Bayer

1898  Bayer's pharmalogist explained  to doctors and scientists at the meeting
        New sabstance is 10 times more effective and less toxinated than conventional  medicine

1889  They put aspirin in the German market
          Application area； Headache

1917 　Bayer's patents in America expired

Aspirin sales remained strong thanks to widespread use as a preventitive treatment for heart attacks and strokes

To this day 40,000 tons of aspirin were sold all over the world

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