Electrical resistors inventions 05/07

20070115090 - Multilayer positive temperature coefficient thermistor and method for designing the same: A multilayer PTC thermistor reliably decreases the resistance by decreasing the thickness of ceramic layers composed of a BaTiO3 semiconductor ceramic and achieves a resistance close to the resistance calculated from the multilayer structure. The thermistor is adjusted to satisfy the conditions 5≦X≦18 and 4≦X·Y≦10, wherein X is a thickness... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070109091 - Method for measurement of temperature coefficients of electric circuit components: There is described a method and circuit for determining a temperature coefficient of change of a parameter of an electrical component, the method comprising: providing at least one thermally-isolated micro-platform on a substrate; placing an electrical component on the at least one thermally-isolated micro-platform; heating the electrical component; measuring a... Agent: Ogilvy Renault LLP

20070103268 - Varistor with three parallel ceramic layer: The present invention discloses a varistor which comprises three parallel ceramic layers. Each of the ceramic layers has two electrodes on both sides thereof. Four leads are properly arranged between and outside surfaces of the ceramic layers to contact with these electrodes. By further providing one or two wires to... Agent: Bacon & Thomas, PLLC

20070103269 - Surface-mounted thermistor and manufacturing method thereof: A thermistor, which is to be mounted on a PCB, for protecting other circuit elements is disclosed. Electrode patterns separately formed on both surfaces of a film resistance element are respectively shaped into two parts which are engaged to each other with a non-conductive gap interposed therebetween. Thus, a Tombstone... Agent: Jones Day

20070096863 - System for protecting circuitry in high-temperature environments: An electrical device for performing a particular function includes a system circuit for performing the function, and a dedicated power supply for providing power to the circuit. Both the system circuit and the power supply are hermetically sealed within a housing. The device within the housing is intended to be... Agent: Philip S. Johnson Johnson & Johnson

20070096864 - Surface mount composite electronic component and method for manufacturing same: The present invention provides a surface mount composite electronic component which can be made compact. The structure of the surface mount composite electronic component is one in which a circuit element is formed on each of a set of opposing surfaces of an insulating substrate composed of a hexahedron, with... Agent: Patent Docket Clerk Cowan, Liebowitz & Latman, P.C.