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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 4593868 | Reel spring of magnetic tape cassette A reel spring for a magnetic tape cassette is made of a resilient sheet metal into a diamond-like configuration in which a pair of portions which are asymmetrical with reference to two central axial line perpendicularly crossing and are symmetrical with r... | 06/10/1986 |
| 4563396 | Magnetic recording medium A magnetic recording medium having a Mn-Al recording layer containing at least one of Fe, Co, and Ni and having an easy magnetization axis in the perpendicular direction to the layer. The magnetic recording layer can be formed at a high speed by employing... | 01/07/1986 |
| 4348430 | Process for producing magnetic particles for magnetic recording medium A process for producing magnetic particles for a magnetic recording medium from an acicular goethite as a starting material comprises a step of growing a Si-component-containing goethite as an outer layer.... | 09/07/1982 |
| 4320370 | Thermo-sensitive reed switch A thermo-sensitive reed switch in which the thermo-sensitive magnetic element is slit parallel to the reeds in the element.... | 03/16/1982 |
| 4254070 | Process for producing sintered body of ceramic composition for voltage non-linear resistor A sintered body of a ceramic composition for voltage non-linear resistor is produced by sintering an oxide semiconductor composition comprising a main component of zinc oxide and a minor component at 1100° to 1400° C.; then maintaining the sintered body... | 03/03/1981 |
| 4248907 | Process for preparing magnetic powder A magnetic powder is prepared by dispersing iron oxide or iron oxide hydrate which can be coated or doped with at least one of cobalt, nickel, tin, titanium, bismuth, zinc or antimony or its compound, as the starting material into an aqueous solution of a... | 02/03/1981 |
| 4248906 | Process for preparing insoluble electrode An insoluble electrode for electrolysis is prepared by coating a solution or slurry comprising palladium oxide and a platinum compound which can be thermally decomposed to form platinum metal, and optionally another salt or oxide, on a conductive substrat... | 02/03/1981 |
| 4233340 | Process for preparing insoluble electrode An insoluble electrode for electrolysis which comprises repeatedly coating and baking a slurry of palladium oxide containing a platinum compound which can be thermally decomposed to form platinum metal, optionally the other metal salt or oxide in a solven... | 11/11/1980 |
| 4227622 | Tape cassette A tape cassette comprises an upper half casing and a lower half casing and male hollow cylindrical projections having a notch mounted on either of the upper half casing or the lower half casing and female hollow recesses mounted on the other half casing a... | 10/14/1980 |
| 4195797 | Tape cassette A tape cassette braking mechanism which includes a resilient plate having a flat part and two bent parts wherein the flat part is contacted with a side wall of a half-case of the tape cassette and the two bent parts are respectively contacted with corresp... | 04/01/1980 |
| 4191345 | Tape cassette A tape cassette comprises a tape guide having a cylindrical surface formed by hard chromium plating or nickel plating. The tape guide is a cylindrical plate having a slit parallel to the axis. The cylindrical tape guide has a groove at one end of the guid... | 03/04/1980 |
| 4188211 | Thermally stable amorphous magnetic alloy During investigation of thermal stability of the amorphous magnetic alloys by the Inventors, it was discovered that, due to the application of heat to the alloys, the hysteresis loop of the conventional, amorphous magnetic alloys was shifted in such a man... | 02/12/1980 |
| 4187998 | Tape cassette A tape cassette comprises a locking mechanism for locking a cover for protecting a tape. The locking mechanism comprises a plate spring whose one end is fixed to a rib mounted on a half case and whose other end is pressed to a lock plate.... | 02/12/1980 |
| 4181272 | Tape cassette reel A tape cassette reel comprises a special clamp which is fitted to a groove of a hub. The clamp comprises an upper rib, a pair of legs extended from the upper rib; a lower rib inserted between the legs and a projected part formed on the lower rib. The proj... | 01/01/1980 |
| 4081114 | Magnetic supporter assembly A magnetic supporter assembly supports a mark piece in a ring permanent magnet which is magnetized to form a multipolar magnet.... | 03/28/1978 |
| 4069367 | Magnetic powder material comprising iron oxide particles with a copper-cobalt alloy coating A powder magnetic material for use as a magnetic recording medium and a method of its manufacture are disclosed. More particularly, the disclosed powder magnetic material is adapted to provide a magnetic recording medium of low electric resistance. In par... | 01/17/1978 |
| 4067755 | Method of making powdered magnetic iron oxide material A method of producing a powder magnetic material for use as a magnetic recording medium is disclosed. More particularly, the disclosed powder magnetic material is adapted to provide a magnetic recording medium of low electrical resistance. In particular, ... | 01/10/1978 |
| 4039417 | Electrode assembly for use in cathodic protection A cathodic protection electrode is mounted in an iron bushing by way of a ring of alumina or forsterite, the bushing being mounted in a glass-lined metallic vessel, such as a water heater. The electrode comprises a solid solution of MFe2 O... | 08/02/1977 |
| 4022716 | Semiconducting ceramics containing vanadium oxide Semiconducting ceramics are produced by firing a semiconducting composition of the barium titanate type containing vanadium oxide in the amount of 0.001 to 0.5 wt%. A change in the specific resistance over the range of the temperature at which the positiv... | 05/10/1977 |
| 4017320 | Ceramic dielectric composition A ceramic dielectric composition is provided including 30 to 94% by mol of SrTiO3, 1 to 22% by mol of Bi2 O3 and 5 to 69% by mol of TiO2, and further including 0.1 to 20% by weight of MgO with respect to the tot... | 04/12/1977 |
| 4014707 | Ceramic dielectric composition A dielectric ceramic composition comprises as principle constituents, 86 - 99.6 mole % of barium titanate, 0.2 - 10 mole % of niobium pentaoxide and 0.2 - 4 mole % of cerium oxide.... | 03/29/1977 |
| 4010310 | Magnetic powder An improved magnetic powder characterized by high coercive force and high magnetic flux density which is formed by admixing a cobalt compound with a magnetic iron oxide, and adding to said admixture a complex forming agent which complexes with the cobalt ... | 03/01/1977 |
| 4003840 | Microwave absorber Microwave absorber comprising a mixture of ferrite powder having particle size of less than 1.65 mm and an organic high molecular weight compound.... | 01/18/1977 |
| 4000516 | Apparatus for maintaining constant the packing density of magnetic tape within a magazine Magnetic tape apparatus includes a master tape loop box magazine for temporarily storing a magnetic tape in a zig-zag condition, a transferring device disposed within the magazine for moving the tape to a tape outlet of the magazine, a detector for detect... | 12/28/1976 |
| 3997479 | Method of reducing the evaporation of Pb during the manufacture of barium titanate (Pb substituted) semiconducting ceramics A method of manufacturing barium titanate semiconducting ceramics having a positive temperature coefficient characteristic of resistivity in which a composite, expressed by a general formula (Ba1.sub.-x.sub.-y Pbx Ry) TiO | 12/14/1976 |
| 3997457 | Ceramic dielectric composition A ceramic dielectric compositon is provided which consists essentially of a sintered metal oxide mixture expressed by the formula: where Me is at least one divalent metal selected from lead and strontium, and x, y, z, u and v are numbers falling within the fol... | 12/14/1976 |
| 3995300 | Reduction-reoxidation type semiconducting ceramic capacitor An improved reduction-reoxidation type semiconducting ceramic capacitor and the method for producing the same are disclosed. The main components of the substrate of the capacitor are CaTiO3, SrTiO3 and Bi2 O3.xTiO.sub... | 11/30/1976 |
| 3990733 | Hub for magnetic tape A hub for winding a magnetic tape thereon comprises a clamp for retaining one end of a magnetic tape. The novel tape clamp comprises a substantially rigid upper web, a resilient lower web and a pair of legs depending from the ends of the upper web and con... | 11/09/1976 |
| 3988816 | Magnet roller for electrostatic record developing device An improved roller, consisting in part of a cylindrical permanent magnet, for use in electrostatic record developing devices is disclosed. Of the plurality of magnetic poles formed on the cylindrical surface of the permanent magnet, two of the same polari... | 11/02/1976 |
| 3989042 | Oscillator-exciting system for ultrasonic liquid nebulizer In an oscillator-exciting system for a ultrasonic liquid nebulizer, a piezo-oscillator element for nebulizing the liquid is electrically connected to a self-exciting oscillating circuit as a constituent element thereof and the circuit is oscillated at tha... | 11/02/1976 |
| 3977985 | Magnetic recording medium comprising cobalt or cobalt alloy coated particles of spicular magnetite A magnetic recording medium is disclosed as comprising powdered magnetic particles upon which there is deposited a ferro-magnetic metal or alloy such as cobalt or a cobalt alloy. Each magnetic particle is a spiculate magnetite and the deposite of cobalt o... | 08/31/1976 |
| 3958068 | Process for the production of powdered magnetic material A process is disclosed for the production of powdered magnetic material for use in magnetic recording materials. The process comprises the steps of dispersing finely divided particles of a ferromagnetic oxide into an aqueous solution, dissolving therein s... | 05/18/1976 |
| 3951873 | Ceramic dielectric composition A ceramic dielectric composition which comprises 22.5-45.2 wt. % SrO, 8.3-20.6 wt. % CaO, 29.3-80.8 wt. % TiO2, and 0.07-8.3 wt. % MgO as main components.... | 04/20/1976 |
