Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 5223002 | Method of making polyaniline solid electrolyte capacitor Highly conducting polyaniline is produced in situ in a tantalum capacitor by subjecting an excess of monomeric aniline to a solution having a low concentration of ammonium persulfate reagent. The monomer is oxidized by the reagent in preference to the pol... | 06/29/1993 |
| 5099397 | Fuzed solid electrolyte capacitor A plastic film having a resin coating is used in mechanically securing the cathode of a solid electrolyte capacitor to a paddle of a leadframe while electrically insulating the cathode from the paddle.... | 03/24/1992 |
| 5057973 | Solid electrolyte capacitor with integral stamped fuze A solid electrolyte capacitor in a block of electrically insulative resin is provided with two electrodes connected by respective connecting tangs to output leads (+, -) and to a fuze test lead; one connecting tang (6) is formed by a first section (6B) fi... | 10/15/1991 |
| 5053927 | Molded fuzed solid electrolyte capacitor A pocket within the molded casing of a solid electrolyte capacitor is of greater volume than a fuze passing through the pocket, thereby ensuring that the fuze will not reestablish its conductive path after being blown. The pocket is established between la... | 10/01/1991 |
| 5019418 | Metallized film capacitor process A self-healing metallized film capacitor has a dielectric sheet metallized with a metal or alloy so chosen to provide the desired sheet resistivity for a given metallization thickness. The invention applies to any metallized film capacitor in which electr... | 05/28/1991 |
| 5011067 | Method for attaching a fuse wire to a lead frame A standard tinned nickel-iron alloy lead frame has a plurality of pairs of extending tab portion positioned in a straight row. A long straight piece of an exothermically alloyable fuse wire, with a core of aluminum coaxially clad with palladium in approxi... | 04/30/1991 |
| 5006964 | Low resistivity low ESR capacitor electrolyte A phthalate electrolyte containing benzil provides aluminum electrolytic capacitors having low equivalent series resistance and low rates of change in equivalent series resistance with time on voltage.... | 04/09/1991 |
| 5001073 | Method for making bipolar/CMOS IC with isolated vertical PNP The manufacture of an integrated circuit including an isolated vertical PNP, an isolated vertical NPN and isolated CMOS transistors is described. The PNP transistor has a shallow densely doped emitter made simultaneously with the source and drain of the P... | 03/19/1991 |
| 5001757 | FM stereo tone detector A stereo FM radio transmission system with FMX transmission and reception capability includes a transmitter that transmits a pilot-coherent FMX-tone indicator signal at a frequency of an exact integer submultiple of the pilot frequency. The system also in... | 03/19/1991 |
| 4989119 | Solid electrolyte capacitor with testable fuze A solid electrolytic capacitor embedded in an electrically insulating resin block has a capacitor body fitted with two electrodes which are connected by two connecting lugs, those of the output terminals (+, -) and a fuze test. One of the connecting lugs ... | 01/29/1991 |
| 4987518 | Metal-cased electrolytic capacitor A wound electrolytic capacitance section is housing within a metal can having a plurality of circumferential indentations or ribs. The uppermost rib provides a seat for the capacitor cover. The lowermost rib determines the depth to which the section exten... | 01/22/1991 |
| 4987519 | Hermetically sealed aluminum electrolytic capacitor An aluminum electrolytic capacitor is housed in an aluminum can having one open end. A standard glass-to-metal seal having an outer tantalum ring is seated snugly within the mouth of the can. With the edge of the tantalum ring positioned flush with, or sl... | 01/22/1991 |
| 4982155 | Hall sensor with high pass hall voltage filter A Hall sensor has at least one Hall element connected to the input of a differential high pass filter which includes a series branch circuit made up of two outer resistors and a central capacitor connected between the two resistors, a first summing circui... | 01/01/1991 |
| 4935698 | Sensor having dual Hall IC, pole piece and magnet A Hall elements and magnet assembly for use as a proximity detector includes a magnet, a pole piece mounted to one pole end of the magnet and an integrated circuit having two side-by-side Hall elements, an amplifier, interconnecting wiring providing the d... | 06/19/1990 |
| 4931901 | Method for adjusting capacitor at manufacture and product A method for making multilayer ceramic capacitors (MLC) has two phases, namely a first test phase and a second manufacturing phase. A test MLC capacitor with buried overlapping electrodes is made and the capacitance of that test capacitor is measured. In ... | 06/05/1990 |
| 4925808 | Method for making IC die with dielectric isolation The method includes forming in one surface of an N+ silicon wafer a matrix of uniformly deep V-shaped grooves, growing one SiO2 over the one surface and the walls of the grooves, forming over the opposite wafer surface a thick self-supporting p... | 05/15/1990 |
| 4916506 | Integrated-circuit lead-frame package with low-resistance ground-lead and heat-sink means The lead-frame in an integrated circuit package, a dual-inline-package (DIP), has a plurality of leads of which four are extensions of a down-set die-attach pad. A dog-leg finger lines in the plane of the leads and is an extension of a peripheral portion ... | 04/10/1990 |
| 4914051 | Method for making a vertical power DMOS transistor with small signal bipolar transistors A silicon integrated circuit includes a vertical power DMOS transistor and a vertical NPN transistor in separate epitaxial pockets by a method including simultaneously forming a plurality of D-well regions in the DMOS transistor and the base region in the... | 04/03/1990 |
| 4910644 | Capacitor electrolyte and process therefor An electrolytic capacitor employs an electrolyte having amic acid salts prepared in situ in the electrolyte by reacting a cyclic anhydride with ammonia or an amine in an aprotic solvent acting as an acceptor in hydrogen bonding and thereafter adding glyco... | 03/20/1990 |
| 4908338 | Dried emulsion ceramic process Dried emulsion of precursors for ceramic additives are added to paints containing fine particle ceramic materials for use in ceramic capacitors. The precursors are converted into the desired additives in the paints during the sintering of the capacitor bo... | 03/13/1990 |
| 4898844 | Process for manufacturing a ceramic body having multiple barium-titanate phases A ceramic includes a dielectric ceramic body that is made by mixing powders of two barium titanate compositions of widely disparate Curie temperature with a minor quantity of a borate flux and a sintering-inhibitor such as titania or bismuth oxide. A body... | 02/06/1990 |
| 4899258 | Solid electrolyte capacitor with integral fuse A solid electrolyte capacitor body is embedded in an electrically insulative block of resin. Output terminals each connected to a respective electrode of the capacitor body project from the block. One output terminal includes a first section fixed to one ... | 02/06/1990 |
| 4897249 | Barium borate preparation A filtered solution of barium hydroxide octahydrate reacted with an aqueous solution of boric acid to provide hydrated γ barium borate having a barium to boron ratio of 1:2 and having fine particle size. The hydrated γ barium borate was converted to the... | 01/30/1990 |
| 4894351 | Method for making a silicon IC with planar double layer metal conductors system A process for providing in an integrated circuit on which there are to be formed at least two levels of metal conductors, includes depositing a first blanket layer of silicon dioxide over the first metal film conductors, spinning on a silicon glass precur... | 01/16/1990 |
| 4882650 | Magnesium titanate ceramic and dual dielectric substrate using same The average chemical composition of a reaction band at the interface adjacent co-sintered layers of barium titanate and a low K magnesium zinc titanate is found to be Mg0.5 Ba0.25 Zn0.25 TiO3. That magnesium bar... | 11/21/1989 |
| 4882651 | Monolithic compound-ceramic capacitor A green ceramic cake is formed comprised of a center layer of fine-ceramic particles sandwiched between two outer layers of relatively coarse-ceramic particles. However, the chemical compositions of the center and outer layers are all essentially the same... | 11/21/1989 |
| 4859941 | Proximity selectro with integral magnet, pole-piece plate and pair of magnetic transducers A proximity detector includes a magnet having steel or iron pole piece plates mounted at front and rear pole ends of the magnet, and a silicon integrated circuit mounted to the outer surface of the front pole piece centered about at the magnet pole axis. ... | 08/22/1989 |
| 4856084 | Noise blanking system for an AM radio receiver To a standard AM radio receiver there is connected an impulse-noise suppression system comprising a preliminary blanking gate adapted for connecting to and for interrupting the AM-modulated signal path at the input of the IF section, and an audio blanking... | 08/08/1989 |
| 4852227 | Method for making a multilayer ceramic capacitor with buried electrodes and terminations at a castellated edge A green-ceramic parent substrate having buried therein a stack of spaced-apart sheet electrodes, each electrode having multiple tab portions extending in one direction to a plane that is orthogonal to the sheet electrodes and to the one direction. A row o... | 08/01/1989 |
| 4823236 | High temperature aluminum electrolytic capacitor A capacitor having a wound aluminum foil electrolytic capacitor section contains an electrolyte solution of 10 to 32 wt % diethylammonium fumarate, 10 to 30 wt % N-methylpyrrolidinone, 4 to 7 wt % water, 0.1 to 0.5 wt % ammonium dihydrogen phosphate, with... | 04/18/1989 |
| 4806159 | Electro-nickel plating activator composition, a method for using and a capacitor made therewith A plating activator composition that is largely silver is applied in a thin film to two surface areas of a ceramic chip capacitor. Subsequently, many such chip capacitors are electrolytically nickel plated, e.g. are electro-nickel barrel plated to provide... | 02/21/1989 |
| 4803598 | Electrolytic capacitor assembly A plurality of electrolytic capacitor sections are sealed within a common cube-like case. An internal wall divides the case into isolated chambers. Upon sealing of the case, the assembly takes up substantially no more space on a circuit board than an indi... | 02/07/1989 |
| 4802064 | Capacitor with mounting ring A mounting ring is secured in the mouth end of a capacitor casing by being engaged under the rolled-over rim of the fully sealed capacitor.... | 01/31/1989 |
| 4791532 | Capacitor anode and method A porous tantalum body is pressed with a cavity compacted locally, and a connection wire is joined to the tantalum body within the cavity.... | 12/13/1988 |
| 4791311 | Two-terminal multiplexable sensor An integrated circuit field-to-electrical energy sensor is capable of being energized through two DC voltage supply terminals. Each of a plurality of such sensors, when connected in parallel so as to be energized from a single DC supply voltage source, is... | 12/13/1988 |
| 4781802 | Solid tantalum capacitor process Anodization of a tantalum pellet in a phosphate/glycol electrolyte is interrupted in order to heat the pellet without bias to a high temperature, then the anodization is completed, then a semiconductor is deposited in the pellet, and then the pellet is he... | 11/01/1988 |
| 4774202 | Memory device with interconnected polysilicon layers and method for making A memory device, based upon a field effect transistor having a floating gate is constructed for use in a silicon integrated circuit array of similar memory devices. The memory device includes only two polysilicon layers, a portion of each polysilicon laye... | 09/27/1988 |
| 4772929 | Hall sensor with integrated pole pieces A Hall element is formed in one surface of a silicon die. A trench is etched away in the opposite die surface in a region adjacent the Hall element. An insulating silicon dioxide is grown on both surfaces and a layer of ferromagnetic metal is deposited on... | 09/20/1988 |
| 4763227 | Aluminum electrolytic capacitor package with stabilizing third lead A low cost aluminum electrolytic capacitor package having axial anode and cathode leads extending in one direction is capable of being seated and wave-solder connected in horizontal position to a printed circuit board without rolling, which unwanted rolli... | 08/09/1988 |
| 4761714 | Anode and capacitor and method therefor A porous tantalum anode body is sintered onto a strip having an incurvate member which is embedded in the body and an elongated portion of the strip which serves as the anode connection.... | 08/02/1988 |
