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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 |
| 8119243 | Coated articles The invention relates to a process for the coating of objects made of valve metals selected from aluminum, magnesium, titanium, niobium and/or zirconium and their alloys with an oxide ceramic layer formed from the metal which has a thin barrier layer as a boundary l... | 02/21/2012 |
| 8106354 | Mass spectrometer arrangement The invention refers to a mass spectrometer arrangement (10) comprising a housing (86) having a mass spectrometer forevacuum vacuum chamber (20) with a mass spectrometer forevacuum outlet (30), at least two mass spectrometer high-vacuum v... | 01/31/2012 |
| 8083468 | Turbomachine A high-speed turbomachine includes a magnetic bearing (22, 23) and a retainer bearing for mounting the rotor. The retainer bearing is embodied as a sliding bearing (26, 27) and encompasses a bearing shell (28) at the stator end, a bearing shaft ... | 12/27/2011 |
| D630229 | Vacuum pump | 01/04/2011 |
| D617814 | Vacuum pump | 06/15/2010 |
| 7559752 | Dual-shaft vacuum pump A two-shaft vacuum pump has a simplified drive motor. The two-shaft vacuum pump has a synchronous motor as a drive motor which motor rotor is permanently excited. Permanently excited motor rotors are sufficiently small and of light weight such that rotor supporting ... | 07/14/2009 |
| 7544046 | Vacuum pump A vacuum pump (10) includes a pump unit (14) and an operating unit (12) arranged spaced from the pump unit (14). The operating unit (12) is connected with the pump unit (14) for controlling it. The pump unit (14) and ... | 06/09/2009 |
| 7481066 | Vacuum device A vacuum device comprises a plurality of cryopumps (10) connected with one or a plurality of vacuum chambers. The cryopumps (10) are connected via media supply conduits (12) and media return conduits (14) with a compressor (16). An... | 01/27/2009 |
| 7415829 | Piston compressor A piston compressor comprises a piston (12) which oscillates in a cylinder (14). A compressed-gas supply arrangement is provided which comprises a compressed-gas accumulator (34), a compressed-gas supply line (18) between a compressed-gas... | 08/26/2008 |
| 7264439 | Evacuating device A device (1), for evacuating a chamber to pressures in the high vacuum range includes a suction-side vacuum pump (2) and an atmospheric-pressure-side vacuum pump (3). The suction-side vacuum pump (2) is a mechanical kinetic vacuum pump wi... | 09/04/2007 |
| 7240536 | Test-gas leak detector A test-gas leak detector (1) includes a connection (27) for a device under test, a sniffer, or a leak detector chamber, a high-vacuum pump (2), a test-gas detector (5) that is connected on the intake side of said pumps, and a test-gas con... | 07/10/2007 |
| 7232295 | Tempering method for a screw-type vacuum pump A screw-type vacuum pump (1) is tempered such that characteristics of the pump are not substantially altered when the pump is subjected to thermal stress. In order to achieve said aim, cooling is adjusted according to an operating state of the screw-type vacu... | 06/19/2007 |
| 7213399 | Refrigerator comprising a regenerator A refrigerator (1) has a housing (2, 14, 19), a cylindrical working chamber (15, 21), a cylindrical displacing member (11, 17), a gap (36, 38) which is located between the housing and the displacing member, a regenerator which is d... | 05/08/2007 |
| 7186098 | Eccentric pump and method for operation of said pump A pump (1) is provided with a housing (2), having an inlet (28) and an outlet (29), a drive (5), a fixed cylinder (2) centered on a mid-axis (9), a displacer (18), rotating eccentrically within the cylinder ( | 03/06/2007 |
