Ken Ishino, Takashi Watanabe, Yasuo Hashimoto: Microwave absorber. TDK Electronics Company, Burgess Ryan and Wayne, January 18, 1977: US04003840 (74 worldwide citation)

Microwave absorber comprising a mixture of ferrite powder having particle size of less than 1.65 mm and an organic high molecular weight compound.

Ken Ishino, Takashi Watanabe: Coatings for preventing reflection of electromagnetic wave and coating material for forming said coatings. TDK Electronics, Burgess Ryan and Wayne, September 26, 1978: US04116906 (40 worldwide citation)

Coatings (or coat) for preventing reflection of electromagnetic wave on iron structures and coating material for use in forming said coatings, said coatings comprising ferrite powders and iron powders dispersed in organic high molecular weight compounds and said coating material comprising a dispers ...

Ken Ishino, Hiroshi Yamashita, Nobuyuki Ono, Yasuo Hashimoto: Electromagnetic wave-absorbing wall. TDK Electronics, Burgess Ryan and Wayne, October 3, 1978: US04118704 (34 worldwide citation)

Electromagnetic wave-absorbing wall comprising ferrimagnetic plates arranged at some intervals in the direction of the electric field of the electromagnetic wave said ferrimagnetic plates being plates of ferrite having the following general formula:

Ken Ishino, Yasuo Hashimoto, Yoshikazu Narumiya: Electromagnetic shield. TDK Corporation, Banner Birch McKie & Beckett, September 3, 1985: US04539433 (28 worldwide citation)

An electromagnetic shielding material for absorbing electromagnetic energy has been found. The shielding material is flexible and has a thin conductive core with a composite ferrite material deposited around the core. The composite ferrite material is a mixture of ferrite powder and a binder for bin ...

Ken Ishino, Hiroshi Yamashita, Masaaki Fukuda: High frequency attenuator using ferrite beads. TDK Electronics, Burgess Ryan and Wayne, March 27, 1979: US04146854 (28 worldwide citation)

An attenuator for use in filtering high-frequency waves propagated in a transmission line, comprising ferrite beads having a conductor passed therethrough which are enclosed firmly within a mixture having powder of ferrimagnetic material dispersed in an organic high polymer.

Ken Ishino, Taro Miura, Yasuo Hashimoto: Popped corn making apparatus used in a microwave oven. TDK Electronics, Oblon Fisher Spivak McClelland & Maier, June 15, 1982: US04335291 (26 worldwide citation)

A popped corn making apparatus used in a microwave oven comprises a bowl having an opening at the upper part and a narrow closed bottom and a substantially conical shape; and a resonator placed at the bottom of said bowl. The electric field resulted by resonance of said resonator under an applicatio ...

Ken Ishino, Yasuo Hashimoto, Hiroaki Abe: Microwave heating oven having seal means for preventing the leakage of microwave energy. TDK Electronics, Burgess Ryan and Wayne, September 6, 1977: US04046983 (22 worldwide citation)

A microwave heating oven has a seal located in the path formed by a gap between the oven body and the oven door for preventing microwave leakage. The seal may comprise several seals, and includes a microwave absorber as one of the seals. The microwave absorber consists of a mixture of a powder of ma ...

Ken Ishino, Hisamatsu Nakano, Naohisa Gotoh: Antenna system. TDK Corporation, Martin M Novack, May 3, 1988: US04742359 (20 worldwide citation)

A parabolic antenna for SHF band having a primary feeder and a reflector is improved by using a backfire helical antenna as a primary feeder, which is fed by using a coaxial cable. The backfire helical antenna has a matching disc coupled with an outer conductor of the coaxial cable feeder, and a coi ...

Ken Ishino, Taro Miura, Takashi Watanabe, Masashi Katsumata: Wave absorber, and an anechoic chamber using the same. TDK Corporation, Armstrong Nikaido Marmelstein Kubovcik & Murray, November 20, 1990: US04972191 (17 worldwide citation)

A flat wave absorber having a conductive plate, a dielectric plate on the conductive plate, and, a ferrite plate on said dielectric plate, provides a wide operational frequency range from 30 MHz to 1 GHz with excellent attenuation characteristics, and an anechoic chamber mounting said wave absorber ...

Ken Ishino, Yasuo Hashimoto, Yoshikazu Narumiya: Electromagnetic interference shielding material. TDK Corporation, Armstrong Nikaido Marmelstein & Kubovcik, October 2, 1984: US04474676 (16 worldwide citation)

The present invention relates to an electromagnetic interference shielding material used for shielding radios and the like from electromagnetic waves emitted from a computer or the like. In the prior art, a zinc flame-sprayed shielding material is applied on the housing of a computer or the like to ...