Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 6124466 | Nitroisourea derivative A novel nitroisourea derivative and a process for producing the same, which is an important intermediate for the production of a nitroguanidine derivative having an insecticidal activity, and a process for producing a nitroguanidine derivative having an i... | 09/26/2000 |
| 5827799 | Compounds and herbicides containing same as active components An object of the invention is to provide herbicides which are completely selective to crops such as paddy rice, soybeans and cotton and have an excellent herbicidal activity on weeds. The invention relates to ether compounds of the general formula (I) ##S... | 10/27/1998 |