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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 |
| 6999297 | Breakdown-resistant thin film capacitor with interdigitated structure The invention relates to a thin film capacitor with a carrier substrate, at least two interdigitated electrodes, and a dielectric. A staggered arrangement of at least one interdigitated electrode below the dielectric with respect to an interdigitated electrode above... | 02/14/2006 |
| 6795695 | Receiver having narrow bandwidth phase-locked loop demodulator A receiver having a phase-locked loop (PLL) for synchronizing its oscillator with a carrier (CA). A calibration circuit (CAL) calibrates the phase-locked loop's oscillator (OSC) in the following manner. It measures (FMC) the frequency difference (dF) between a nomin... | 09/21/2004 |
| 6765517 | Variable order sigma-delta modulator A Sigma-Delta modulator(10) comprises a signal put(34) coupled to a forward filter comprising a series connection of a plurality of N summing stages(28, 30, 32), where N is an integer of at least 2, alternating with a corresponding plural... | 07/20/2004 |
| 6370388 | Telephony device transmitting divided messages The invention discloses a base station connected to the telephone line, at least one handset including, inter alia, a display and means for transmitting CLMS messages defined by the DECT standard. For transmitting data messages of arbitrary length, the de... | 04/09/2002 |
| 6370045 | Converter including a fly-back circuit The invention relates to a converter including a fly-back circuit (5). For obtaining a maximum possible adaptation to the internationally different network voltages, there is proposed to provide a first fly-back frequency range for a converter input volta... | 04/09/2002 |
| 6368946 | Manufacture of a semiconductor device with an epitaxial semiconductor zone A method of manufacturing a semiconductor device with an epitaxial semiconductor zone, whereby a first layer of insulating material, a first layer of non-monocrystalline silicon, and a second layer of insulating material are provided in that order on a su... | 04/09/2002 |
| 6366684 | Image processing method and system involving contour detection steps The present invention includes a method for processing an intensity image (J0) formed of points representing an object (LV), including steps for automatically supplying points so as to determine a minimum path representing the object contour (C... | 04/02/2002 |
| 6345076 | Receiver for a digital transmission system The invention relates to a receiver for a digital transmission system with an incoherent transmission method, which receiver includes an equalizer for forming estimates for a sequence of symbols a[k] transmitted by a transmission channel from received sym... | 02/05/2002 |
| 6329847 | Radio device including a frequency synthesizer and phase discriminator for such a device A radio device includes phase discriminator with a phase locked loop. Where when there is no phase locking, the output voltage of the phase discriminator remains constant, which provides considerable gain for loop. When there is phase locking, the phase d... | 12/11/2001 |
| 6324028 | Recording apparatus provided with a write driver circuit A recording apparatus for recording an information signal on a magnetic record carrier includes a write driver circuit and a magnetic write head. The write driver circuit comprises a first voltage driver and a second voltage driver. A first current driver... | 11/27/2001 |
| 6314518 | System for transferring content information and supplemental information relating thereto A system for copy protecting content information has an arrangement for receiving and controlling the playback of encoded video. The video content, e.g. MPEG compressed digital video, is watermarked and includes a control signal indicating the status (e.g... | 11/06/2001 |
| 6292534 | X-ray examination apparatus An X-ray examination apparatus includes an X-ray detector for deriving an image signal from an X-ray image. The X-ray detector has an essentially elongate X-ray-sensitive surface. The X-ray sensitive surface of the X-ray detector corresponds notably to a ... | 09/18/2001 |
| 6285647 | Method and device for writing an optical record carrier A method for writing an optical record carrier, in which a mark representing recorded data is written in the record carrier by a sequence of radiation pulses. The radiation power has a different level in between the pulses of a sequence and immediately af... | 09/04/2001 |
| 6278205 | Electric motor with connector element on foil-shaped insulating substrate An electric motor (19) comprises a first part (21) and a second part (23) which are rotatable with respect to each other about an axis of rotation (9). The first part comprises a foil-shaped insulating substrate (51) on which a plurality of series-connect... | 08/21/2001 |
| 6275158 | Device arranged for contactless communication and provided with a data carrier with fully enclosed connection means for electrically connecting a chip and a passive component The data carrier (4) of a device (1) provided with a data carrier (4) includes a casing (5) which is formed by injection molding and in which there are accommodated holding means (6) for holding a chip (7) and at least one transmission coil (8), and also ... | 08/14/2001 |
| 6255183 | Manufacture of a semiconductor device with a MOS transistor having an LDD structure using SiGe spacers A method of manufacturing a semiconductor device with a MOS transistor having an LDD structure. A gate dielectric (6) and a gate electrode (7, 8) are formed on a surface (5) of a silicon substrate (1). The surface adjacent the gate electrode is then expos... | 07/03/2001 |
| 6249548 | Motion vector processing In a motion vector processing method, a motion vector (MV) is generated (MV-EVAL, MV-MEM) for a given picture part (I) based on a selection of a motion vector out of a predetermined set of motion vectors to obtain a selected motion vector, and the given p... | 06/19/2001 |
| 6242270 | Method of manufacturing integrated circuits Visible defects are detected on a process semiconductor wafer. Defects are classified according to appearance and an association is kept between classes and apparatuses. When the density of defects in a given class exceeds a control limit the associated a... | 06/05/2001 |
| 6219314 | Disc changer with rotatable disc support and disc player including the disc changer A disc changer for bringing disc-shaped information carriers into and out of a position. The disc changer includes a supporting body and a disc-shaped disc which is supported by the supporting body, is arranged to be movable relative to the body, and is r... | 04/17/2001 |
| 6193937 | Apparatus for manufacturing a broadband cholesteric polarizer The Application describes a method and devices for manufacturing a broadband cholesteric polarizer having a well-defined bandwidth and edge position. To this end, a liquid-crystalline cholesterically ordered layer comprising reactive chiral monomers and r... | 02/27/2001 |
| 6170495 | Apparatus for treating substrates using the marangoni effect Apparatus for treating substrates, such as silicon wafers (1), wherein the substrates are immersed for some time in a bath (2) containing a liquid (3) and are taken therefrom so slowly that practically all of the liquid remains in the bath (2). The substr... | 01/09/2001 |
| 6166337 | Device including a printed circuit board which is contacted by depressing a key located at a housing wall which makes an angle with the printed circuit board A device includes a housing, a built-in electric printed circuit board and a set of keys positioned near to a wall of the housing. At least a key portion movable by depression, positioned substantially perpendicularly to the wall, is present inside the ho... | 12/26/2000 |
| 6150757 | Method of coating a luminescent material A luminescent material coated with a crystalline layer of a metal oxide M.sub.2 O.sub.3 wherein a metal M is chosen from the group formed by Y and Al is shown. According to this method the luminescent material is first introduced into a solution of a salt... | 11/21/2000 |
| 6144152 | Luminescent screen for low pressure mercury discharge lamp with specific emission range Color rendering indices Ra,8 between 80 and 90 and R9 greater than 20, and a color point on or near the Planckian curve, are achieved with a lamp vessel provided with a luminescent screen including a first luminescent substance which emits predominantly b... | 11/07/2000 |
| 6133688 | Luminescent material A luminescent material of general formula Lny/3 Nax-y (Alx Si192-x O384)(MO3)z wherein 0 | 10/17/2000 |
| 6104837 | Image data compression for interactive applications A compression method and apparatus are provided for use in image data processing where two-dimensional pixel images have respective absolute depth values specified per pixel, and that depth data is required to be compressed prior to transmission or storag... | 08/15/2000 |
| 6104813 | Interactive compact disc system A system for controlling the playing of rented compact discs on an end-user's compact disc player. The end-user obtains a validation disc on which is stored a control program and an expiry date. When the validation disc is inserted into the user's player,... | 08/15/2000 |
| 6072856 | Power supply unit including a pulse width modulated inverter, notably for an x-ray generator The invention relates to a power supply unit which includes an inverter having output connections whereto the primary winding of a transformer is connected via a series capacitor. The rectified secondary voltage of this transformer is applied to a use whi... | 06/06/2000 |
| 6046880 | Device for blocking insertion of undersized objects A device such as a cassette recorder of a computer has a wall portion formed with a loading aperture for introduction of standard-type objects, such as a magnetic-tape cassette or a cassette for an optical or magnetic disc. To prevent damage or incorrect ... | 04/04/2000 |
| 6044345 | Method and system for coding human speech for subsequent reproduction thereof Human speech is coded by singling out from a transfer function of the speech, all poles that are unrelated to any particular resonance of a human vocal tract model. All other poles are maintained. A glottal pulse related sequence is defined representing t... | 03/28/2000 |
| 6031331 | Electric lamp having lamp vessel with improved pinch seal The electric lamp has a quartz glass lamp vessel (1) having first and second neck-shaped portions (2, 3) with first and second seals (4, 5). Current supply conductors (6, 7, 8; 9, 10, 11) consist of a metal foil (7, 10) embedded in the respective seal (4,... | 02/29/2000 |
| 6026821 | Method of and hair dryer for drying hair using remote sensing of the moisture content of the hair Hair dryer with remote sensing of the moistness of the hair by means of a detector which compares the amount of radiant energy in two absorption bands in the spectrum of light emitted by an infra red source and reflected by the hair. One of the absorption... | 02/22/2000 |
| 6028831 | Loading mechanism for loading and unloading an information disc into/from an information-technology apparatus Loading mechanism for loading and unloading an information disc into or from an information-technology apparatus in which first and second guides have respective first and second grooves each provided for engaging the edges of the information disc, and th... | 02/22/2000 |
| 6002774 | Arrangement, a system, a circuit and a method for enhancing a stereo image A stereophonic audio signal processing arrangement for variably enhancing a stereo image, wherein the stereo image enhancement is reduced at high signal levels so as to reduce distortion. The arrangement is used in a stereophonic audio reproduction system... | 12/14/1999 |
| 6002200 | Capped electric lamp The capped electric lamp has a cap (3) secured to a sealed lamp vessel (1). The cap (3) has a housing (10) of metal sheet, having a cylindrical shell (11) and remote from the lamp vessel (1) an integral base (13) having an opening (14) therein. A cavity (... | 12/14/1999 |
| 5991608 | Portable communication device with optimized transmission loss A portable electronic apparatus is disclosed having an antenna and a communication circuit. The antenna impedance is chosen to be a predetermined value which is deliberately mismatched to the impedance of the communication for a predetermined frequency ba... | 11/23/1999 |
| 5991443 | Graphics image manipulation In an image source for multimedia applications such as networked computer games, a graphics engine (16) generates pixel images one line at a time using a scan-line algorithm and supplies the generated scan lines to an encoder (18) where they are buffered.... | 11/23/1999 |
| 5970207 | Television system for transmitting pictures in a digital form To be able to transmit television pictures in a digital form through a medium having a limited bandwidth, the pictures are subjected to picture transform and to variable-length coding. The picture to be transmitted is converted in this manner into a bit s... | 10/19/1999 |
| 5960037 | Encoding of a plurality of information signals The apparatus for encoding a plurality of digital information signals, having at least a first input unit for receiving a first digital information signal and a second input unit for receiving a second digital information signal. A signal combination unit... | 09/28/1999 |
| 5934791 | Electric lamp An electric lamp according to the invention comprises a lamp vessel (10) which is closed in a gastight manner, which has an end portion (11), and which surrounds a light source (12). The lamp vessel supports a cylindrical collar (30) with an axis (31) at ... | 08/10/1999 |
