Famous Patents
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 |
| 4919067 | Self-righting monohull vessel A planing type self-righting boat having rigid pontoons forming its perimeter structure independent of interior inflation and which, during the vessel's normal operation, protect conventional or modified interior inflatable pontoons which elements togethe... | 04/24/1990 |
| 4659275 | Barge tipper A barge tipper comprises a cylindrical floating apparatus 10 defining a chamber 18 into which a barge 28 can be floated. End doors 16 at either end of the apparatus 10 are closed and the barge 28 is clamped in position by hydraulically operated clamps 20.... | 04/21/1987 |
| 4409917 | Rotating pontoon A rotatable pontoon includes a floating cylinder provided with watertight compartments and having a hollow interior for receiving one or more vessels adapted to be overturned by rotation of the pontoon. Rotation is achieved by either external power or by ... | 10/18/1983 |
