1
Hiroshi Hatanaka, Kanji Ohya, Masahiro Nishiki: Dielectric resonator device. Nihon Dengyo Kosaku, NGK Spark Plug, Larson & Taylor, August 4, 1992: US05136270 (16 worldwide citation)

A dielectric resonator device comprising a resonator body having a dielectric resonator element of dielectric ceramics, and a supporting member integrally formed with the resonator element and made of the same material as that of the resonator element, the resonator element being provided with an in ...


2
Masahiro Nishiki: Ceramic electronic filter. NGK Spark Plug, Finnegan Henderson Farabow Garrett & Dunner, January 27, 1987: US04639698 (6 worldwide citation)

A ceramic filter with planar, piezoelectric-type resonators and planar inputting, outputting, and grounding terminal boards arranged in parallel relationship in an insulating case with respective edges extending toward an open case side. Terminal legs extending from the respective edges are received ...


3
Hisao Banno, Masahiro Nishiki: Temperature compensated stripline filter for microwaves. NGK Spark Plug, Larson and Taylor, August 10, 1993: US05235298 (2 worldwide citation)

The present invention is to overcome a problem of a variation in a resonant frequency of a microwave stripline filter which may occur at a change of temperature during when the microwave stripline filter is operated. The microwave stripline filter has resonator electrodes (3 and 4) with a predetermi ...