Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 5416737 | MOS memory unit for serial information processing The invention relates to a MOS memory unit for serial information processing, in particular a shift register stage with an EEPROM cell having a floating gate transistor. According to the prior art, the gate electrodes of all floating gate transistors of a... | 05/16/1995 |
| 5416277 | Cicuit and process of manufacturing the circuit In a process for manufacturing a circuit including a first circuit plane of a ceramic substrate which is covered with, for example, thick-film structures and is imprinted with corresponding conductor paths having contact faces, the ceramic substrate is to... | 05/16/1995 |
| 5416189 | Process for the synthesis of polyamides Process for the synthesis of polyamides by polycondensation in a closed reactor of one or a number of dicarboxylic acids with a diamine compound containing not less than 60 mol % of-m-xylyenediamine, in which all the amount of diamine compound stoichiomet... | 05/16/1995 |
| 5415104 | Practice ammunition A practice ammunition includes a propellant case having a case body; a circumferential mouth part; and a circumferential shoulder connecting the case body with the mouth part. The shoulder tapers from the case body toward the mouth part. The practice ammu... | 05/16/1995 |
| 5414679 | Disc player having a transporting device for moving a disc and disc holder A disc player has a playback unit that includes a turntable having a driveshaft. At least one disc storage magazine having a plurality of storage compartments and a plurality of superposed disc holders stored therein is provided. Each disc holder accommod... | 05/09/1995 |
| 5414566 | Apparatus and method for generating high speed dubbing signal An apparatus for generating a high speed dubbing signal to be recorded by an external recording apparatus. The high speed dubbing signal, whose pitch is N times that of a digital input signal, is generated as follows. An encoding circuit subsamples the di... | 05/09/1995 |
| 5414564 | Deformable telescope mirror A telescope mirror assembly includes a space frame; a deformable mirror body; a plurality of spaced supporting elements bonded to the mirror body by an adhesive; a fastening assembly for releasably securing each supporting element to the space frame for c... | 05/09/1995 |
| 5414269 | Circuit for detecting a paper at a desired position along a paper feed path with a one shot multivibrator actuating circuit A print paper detecting circuit for installation on a printer, to detect whether a print paper is supplied at a predetermined position along a paper path by using an optical sensor composed of a light emitting diode and phototransistor. The circuit detect... | 05/09/1995 |
| 5413766 | Device for reducing exhaust gas contaminants, particularly for motor vehicles A device for reducing contaminants, particularly for motor vehicles, includes a housing, a catalyst body disposed therein with its periphery spaced from the housing wall and an intumescent mat disposed in the gap between the housing wall and the catalyst ... | 05/09/1995 |
| 5413730 | Compositions containing a fluorinated ether and use of these compositions The invention relates to compositions containing difluoromethoxy-2,2,2-trifluoroethane and an alcohol. These compositions can be used especially as solvent for cleaning electronic components and for degreasing metals.... | 05/09/1995 |
| 5413578 | Device for removing a bone cement tube A device for removing a bone cement tube surrounding a prosthesis shaft from the bone cavity after removal of the endoprosthesis which comprises an ultrasonic generator with an essentially cylindrical guide section, the free end of which carries the sonot... | 05/09/1995 |
| 5413357 | Program controlled entertainment and game apparatus The present invention relates to a program controlled entertainment and game device which includes a housing, a display unit connected with the housing and preferably provided within the housing, operating elements associated with the housing, and a playb... | 05/09/1995 |
| 5413059 | Device for feeding products to be sewn, in particular having edges which roll inward A device for feeding a product to be sewn to a sewing machine includes a guide element having a curved slide surface on which the product to be sewn is guided in a sliding manner in a direction toward a sewing point. The guide element further has a strip-... | 05/09/1995 |
| 5412988 | Acceleration sensor An acceleration sensor includes a silicon substrate with a micromechanical bender bar constituting a testing mass having one end mounted the silicon substrate and a free end opposite the one end. A ferromagnetic core is mounted on the free end of the micr... | 05/09/1995 |
| 5414616 | Inverter with reduced wiring inductance and increased current balance between semiconductor switching elements In an inverter device, two short-circuiting bars of a direct current circuit portion are each formed of a conducting plate bent so as to have a crank-shaped cross section, one of the outside flat surfaces of each of the two conducting plates is connected ... | 05/09/1995 |
| 5410873 | Apparatus for diminishing nitrogen oxides An apparatus for diminishing the amount of NOx in the exhaust gases of an engine by a catalytic converter installed in its exhaust system. The apparatus includes an injector associated with the intake system of the engine, or the exhaust system... | 05/02/1995 |
| 5412607 | Semiconductor memory device A semiconductor memory device according to the present invention includes a first and second bit lines; a word line; a memory cell electrically connected to the first and second bit lines and the word line; a first current sense amplifier for reducing a p... | 05/02/1995 |
| 5412254 | High voltage pulse generator A high voltage pulse generator for providing a high voltage pulse across a dielectric switch comprises a main high voltage pulse generator, an energy storing pulse forming line connected at one end to the main pulse generator and connected at the other en... | 05/02/1995 |
| 5412490 | Printer provided with an image reading unit A printer 1 provided integrally with an image reading unit 2 which comprises a handy scanner 3 for reading a draft and an automatic draft feeder 4 on which the handy scanner 2 is detachably mounted for automatically conveying the draft wherein a draft jam... | 05/02/1995 |
| 5412236 | Compound semiconductor device and method of making it In a method of making a semiconductor device, an active layer and a heavily doped cap layer are formed in turn on a semiconductor substrate, a first electrode is formed on the cap layer, a mask of a two-layer structure is formed on the cap layer, with the... | 05/02/1995 |
| 5412231 | Semiconductor device having organically doped structure Mobility includes a semiconductor substrate, a non-doped layer applied on the semiconductor substrate, an electron supply layer applied on the non-doped layer, and a metal gate layer applied on the electron supply layer. The said electron supply layer has... | 05/02/1995 |
| 5409419 | Ventilator insert A ventilator insert for cooling electronic components in cabinets and racks, the insert including a ventilator housing provided with a cover plate and a front plate. A plurality of blowers are held in the cover plate. The blowers are supplied with air by ... | 04/25/1995 |
| 5409343 | Ship loader or unloader A ship loader or unloader includes a vertically extending first region and a horizontally extending second region; a first hydraulic cylinder connected to a lower end of the first region and to the second region for translationally displacing the second r... | 04/25/1995 |
| 5409039 | Regulating mechanism for the service adapter of a service coupling cooperating with a charging port part A service adapter includes a hollow adapter body; a valve seat in the adapter body; a threaded spindle threadedly engaging the adapter body and extending thereinto; a turning knob attached to the spindle, whereby a rotation of the turning knob effects a r... | 04/25/1995 |
| 5410744 | HF mixer stage having a common base circuit An HF mixer stage having a common base circuit comprises an amplifier stage having two amplifier transistors, a switching stage with two transistor pairs each having two emitter-coupled switching transistors, and a switching circuit connected to the switc... | 04/25/1995 |
| 5410481 | Method of determining the rate of rotation of vehicles and vehicle arrangement for implementing the method A method of determining vehicle rotation rates while suppressing interferences caused by sensor principles. In particular, the time-dependent drift of prior art gyro systems is to be avoided in the navigation of driverless transportation systems, and faul... | 04/25/1995 |
| 5410177 | Planar semiconductor and Zener diode device with channel stopper region A planar semiconductor device having a heavily doped channel stopper region of the first conductivity type and at least the following components: a Zener diode having the following regions, seen from an upper surface of the device, an upper diode region o... | 04/25/1995 |
| 5409648 | Process for producing multi-layer molded bodies A process is disclosed for producing multiple-layer moulded bodies by injection of a laminate (16) composed of an essentially flexible, foil-like surface material (19) such as leather or textiles, and a foam layer (22) laminated on the back side of the su... | 04/25/1995 |
| 5407767 | Photoconductors for electrophotography with indole and benzidine compounds A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the conductive substrate and including a charge generating material and a charge transporting material. The charge transporting material ... | 04/18/1995 |
| 5406679 | Web guiding and supporting device at the outlet of a carding machine A carding machine includes a web delivering mechanism formed of a pair of cooperating rolls, for discharging a fiber web; and a web guiding element positioned immediately downstream of the roll pair as viewed in the direction of web advance. The web guidi... | 04/18/1995 |
| 5406973 | Valve upper part The valve upper part has a head piece (1), a spindle (2) and a valve piston (3). The valve piston (3) can move axially in the head piece (1). The spindle (2) can rotate in the head piece (1). Spindle (2) and valve piston (3) are connected together via a m... | 04/18/1995 |
| 5408204 | Amplitude limiter An amplitude limiter including an input power divider, first and second circuit branches each having an input end coupled to receive a split input signal and each being substantially identical electrically parallel-connected branches, each circuit branch ... | 04/18/1995 |
| 5408153 | Index position detecting apparatus for an electromagnetic rotary machine An electric rotary machine which prevents problems involved in leakage flux, and reduces the number of components so that it becomes thin and small in size, and inexpensive. The machine includes a first pulse generating device generating a first frequency... | 04/18/1995 |
| 5406329 | Solid state image pickup apparatus having test signal generator A solid state image pickup apparatus includes a solid state image pickup device for receiving an optical image of an object and generating an electrical image signal representing the optical image of the object in synchronism with a driving pulse from a d... | 04/11/1995 |
| 5406246 | Temperature sensor and method for producing temperature sensor elements A positive temperature coefficient temperature sensor for use in exhaust-gas systems of internal-combustion engines includes a sensor element having a multilayer laminate composite structure with a positive temperature coefficient thermistor, formed by at... | 04/11/1995 |
| 5406152 | Electromagnetic vibration generator An electromagnetic vibration generator includes a housing, a U-shaped magnet core disposed in the housing and having parallel-extending legs each terminating in a pole face, and an excitation winding inserted on each core leg. The magnet core is encased i... | 04/11/1995 |
| 5406098 | Semiconductor circuit device and method for production thereof A semiconductor circuit device is disclosed in which an impurity ion implanted region is formed in a substrate, a Schottky junction type gate electrode is formed above the impurity ion implanted region, and a source electrode and a drain electrode are for... | 04/11/1995 |
| 5405937 | Polymers derived from fluorinated thiophenes, and conductive polymers derived therefrom The invention relates to thiophenes substituted by an alkoxy group containing at least one fluorine atom. The invention also relates to the polymers derived from these substituted thiophenes and to the electrically conductive polymers containing these pol... | 04/11/1995 |
| 5405797 | Method of producing a monolithically integrated millimeter wave circuit A method and an arrangement for an integrated millimeter wave circuit wherein a Schottky diode and an HFET are produced in a quasi-planar arrangement from a semiconductor layer sequence. Due to the quasi-planar arrangement, the manufacturing process is si... | 04/11/1995 |
| 5405725 | Photoconductor for electrophotography An electrophotographic photoconductor for an electrophotographic apparatus which employs contact charging, includes a conductive substrate; and a photoconductive layer for contacting an electric conductor, which photoconductive layer includes a charge gen... | 04/11/1995 |
