09439582 is referenced by 5 patents and cites 988 patents.

The system of the present invention includes a conductive element, an electronic component, and a partial power source in the form of dissimilar materials. Upon contact with a conducting fluid, a voltage potential is created and the power source is completed, which activates the system. The electronic component controls the conductance between the dissimilar materials to produce a unique current signature. The system can also measure the conditions of the environment surrounding the system.

Title
Communication system with remote activation
Application Number
14/552218
Publication Number
9439582 (B2)
Application Date
November 24, 2014
Publication Date
September 13, 2016
Inventor
Jonathan Withrington
San Francisco
CA, US
Hooman Hafezi
Redwood City
CA, US
Patricia Johnson
Palo Alto
CA, US
Mark Zdeblick
Portola Valley
CA, US
Jeffrey Berkman
Saratoga
CA, US
Agent
K&L Gates
Assignee
Proteus Digital Health
CA, US
IPC
A61B 5/145
A61B 5/03
A61B 5/00
H01Q 1/27
A61J 3/00
A61B 5/053
A61B 5/07
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