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| Number | Title | Issue Date |
| 7199016 | Integrated circuit resistor An integrated circuit resistor is provided that comprises a mesa 14 between electrical contacts 16 and 18. The electrical resistance between electrical contacts 16 and 18 is selectively increased through the formation of recesses | 04/03/2007 |
| 6392528 | Circuit protection devices An electrical device which contains a first electrode, a second electrode, a third electrode, a first resistor which is connected in series between the first and second electrodes, and a second resistor which (i) is thermally coupled to the first resistor... | 05/21/2002 |
| 6163246 | Chip-type electronic device A chip-type electronic device has a sintered ceramic body formed by integrally sintering a plurality of ceramic layers, inner electrodes including first electrodes, second electrodes and a third electrode formed inside this sintered ceramic body and outer... | 12/19/2000 |
| 6157289 | PTC thermistor The invention presents a PTC thermistor which is high in adhesive strengths of inner- and outer-layer electrodes composed of metallic foil respectively stuck to conductive sheets, and has a larger current breaking characteristic. It contains a laminated b... | 12/05/2000 |
| 6124781 | Conductive polymer PTC battery protection device and method of making same A battery protection device includes an upper foil electrode laminated to the upper surface of a conductive polymer PTC layer, and a lower foil electrode laminated to the lower surface of the PTC layer. An isolated portion of the lower electrode is formed... | 09/26/2000 |
| 6108212 | Surface-mount device package having an integral passive component The surface-mount device package comprises a pad located on a face of the surface-mount device, a solder bump bonded to the pad, and a terminal spaced radially apart from the pad. A terminal surrounds the pad in at least one common plane that bisects the ... | 08/22/2000 |
| 5990781 | Chip type resistor and manufacturing method thereof A chip type resistor includes terminal electrodes having main upper electrodes, extensions or enclaves of a resistive film formed on left and right sides of the upper surface of main upper electrodes, and auxiliary upper electrodes formed on upper surface... | 11/23/1999 |
| 5973588 | Multilayer varistor with pin receiving apertures A composition material for use in manufacturing a varistor consists of the following constituents: a) zinc oxide, b) ceramic structure influencing additives selected from the group consisting of bismuth oxide, boric acid, chromium oxide, cobalt oxide, man... | 10/26/1999 |
| 5565838 | Varistors with sputtered terminations The invention provides a varistor with sputtering terminations. In one aspect, the invention includes a varistor body with electrodes internal to the body except at spaced apart regions of the body, and sputtered terminations on the spaced apart regions o... | 10/15/1996 |
| 5560098 | Method of making an electrical connection to thick film tracks A method of making an electrical connection of a conductor (1) to a thick film track (2) mounted on a substrate (3) includes the steps of heating the conductor (1) to a temperature at which it may melt the glass constituent of the track (2), and inserting... | 10/01/1996 |
| 5247277 | Electrical devices An electrical device in which a first connection element is in electrical contact with a resistive element. The first connection element defines a cavity into which, when the cavity is empty, a second connection element can be inserted. The second connect... | 09/21/1993 |
| 4488033 | Heater assembly for heating glass surface A heater assembly for heating a surface such as the rear window of an automobile. A plurality of heater elements are adhesively secured onto the surface in generally vertically spaced horizontally extending direction. A pair of busbars are adhesively secu... | 12/11/1984 |
| 4445026 | Electrical devices comprising PTC conductive polymer elements Electrical devices comprising a layer of a PTC conductive polymer and a sheet electrode in contact with each face of the PTC layer. The electrodes extend to the sides of the layer and the sides of the layer are concave, and this results in improved perfor... | 04/24/1984 |
| 4438322 | Ceramic coated electric heater assembly for tools An electric heater assembly for tools having a removable heated tip includes a tubular metal base having an open end adapted to removably receive and hold the end of the tool tip. A coating of ceramic electrical insulation material is provided on a portio... | 03/20/1984 |
| 4334148 | PTC Heaters A self-regulating electrical heater comprised of a material which exhibits a positive temperature coefficient of resistance. The heater has a generally rectangular cross-section which provides greater thermal stability and reduces the number of hotline fa... | 06/08/1982 |
| 4260872 | Ceramic ignitor A fast response ceramic ignitor which is particularly adapted for use with household current as a replacement for gas pilot lights, the ignitor being formed from pure lanthanum chromite, or lanthanum chromite which has been doped with combinations of niob... | 04/07/1981 |
| 4164646 | Solid current carrying and heatable member with electric connection A current carrying member embedded in a brick-like member and having a wrapping comprising a flexible graphitic covering providing intimate contact with respect to the brick, also allowing the current carrying member and the brick to expand at different r... | 08/14/1979 |
| 4127934 | Method of making terminal construction for electrical circuit device An electrical circuit device having a substrate including circuit components on at least one side thereof and a plurality of through openings in the substrate. Terminal leads are positioned in the openings each with a deformation intermediate the ends of ... | 12/05/1978 |
| 4112410 | Heater and method of making same A heater comprising a metallic tubular sheath in which an elongate electrical center conductor is coaxially disposed therewithin. A fibrous, inorganic electrical insulation material is wrapped around the center conductor and an electrical resistance heati... | 09/05/1978 |
| 4097718 | Device for heat treating hair on the human head, and the like hair curling device having self-regulating PTC heater A hair curler includes an apertured cylindrical shell about which hair to be curled is wound. Mounted within the shell are two semicylindrical mounting components which donfine between themselves a plurality of spaced apart pill-shaped PTC resistor bodies... | 06/27/1978 |
| 3956614 | Electric current distribution means for a ceramic type of electrical resistance heater element A metal bar with a metal felt covering on each side or therearound and sized externally to be a snug slip fit into slot means provided in a conductive surface monolithic refractory ceramic heater element provide for a convenient and desirable means for di... | 05/11/1976 |
