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 |
| 5719762 | Method of controlling a vehicle to make a combination of arbitrary translational and rotational motions A method of controlling a rotary vehicle to navigate a heading using a conation of translational and rotational motions by a plurality of driving-steering wheels controlling the motion in three degrees of freedom for a manned or unmanned vehicle having a... | 02/17/1998 |
| 5647216 | High-power thermoacoustic refrigerator A high-power thermoacoustic refrigerator including a half-wave length resonator, first and second drivers located in housings at first and second ends of said resonator, two pusher cones, a plurality of heat exchangers, a first and second stack, utilizing... | 07/15/1997 |
| 5546797 | Constant-depth scratch test for the quantification of interfacial shear strength at film-substrate interfaces A Constant-Depth Scratch Test (CDST) technique to quantitatively determine he shear strength of interfaces between thin metallic or non-metallic films and metal or ceramic substrates is revealed. The test overcomes two problems associated with other types ... | 08/20/1996 |
