Aspirin was not patented. It was the standardization method that was patented, and the name Aspirin was probably TM. ASA is a natural compound and cannot be patented.
Other producers of ASA have devised their own extraction method, and sell it under different names. Aspirin is not a product, it is a brand name of a product.
Just like you can't patent a vitamin.
Other producers of ASA have devised their own extraction method, and sell it under different names. Aspirin is not a product, it is a brand name of a product.
Just like you can't patent a vitamin.
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