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Akira Ishikawa, Nabuo Takeda, Suzanne I Ahn, Samuel S Ahn, Steven R Hays, F Andrew Gaffney: Miniature implanted orthopedic sensors. Ball Semiconductor, Howison Thoma & Arnott L, September 10, 2002: US06447448 (488 worldwide citation)

A substantially spherical semiconductor ball implanted in orthopedic structures for sensing and/or stimulation. In one embodiment, a vertebral column (


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Akira Ishikawa, Nabuo Takeda, Suzanne I Ahn, Steven R Hays, Kevin Nelson: Glucose sensor. Ball Semiconductor, Howison Thoma & Arnott L, April 8, 2003: US06546268 (483 worldwide citation)

A biochemical sensor based on ball integrated circuit technology which is designed to be biocompatible for implantation within a human or animal body. A sensor media is mounted to the ball integrated circuit, the sensor media operable for sensing biochemical molecules. An onboard communication link ...


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Akira Ishikawa, Nabuo Takeda, Suzanne I Ahn, Steven R Hays: Method and apparatus for attaching tags to medical and non-medical devices. Ball Semiconductor, Howison Chauza Thoma Handley & Arnott L, April 2, 2002: US06366206 (376 worldwide citation)

A method and apparatus for attaching one or more transponders to medical and non-medical products to tag respective ones of the products with identifying data contained in a memory of the transponders. The one or more transponders each include a memory containing the corresponding identifying data w ...


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Akira Ishikawa, Nabuo Takeda, Suzanne I Ahn, Samuel S Ahn, Steven R Hays, F Andrew Gaffney: Wireless EKG. Ball Semiconductor, Howison Chauza Thoma Handley & Arnott L, September 25, 2001: US06295466 (65 worldwide citation)

A wireless electrocardiogram monitor utilizing a cooperative association of miniature semiconductor balls. A side view of a surface mount cardiac monitor system (


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Akira Ishikawa, Nabuo Takeda, Suzanne I Ahn, Steven R Hays: Miniature pump-through sensor modules. Ball Semiconductor, Howison Chauza Thoma Handley & Arnott L, December 4, 2001: US06324904 (55 worldwide citation)

Sensor modules are provided which are pumped into a well by first being pumped downhole within a drill string, then passing through the drill bit and being circulated uphole in the annulus between the drill string and the borehole of the well. The sensors take measurement readings as they are being ...


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