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Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 340: Communications: Electrical

Communications - the handling of information or intelligence, restricted to the conveying of said information or intelligence between geographically spaced points. Information or intelligence is defined as being, matter which is handled by signaling systems or signaling devices (such as telegraph systems) or by that portion of nonsignaling systems or nonsignaling devices (such as power supply systems) which is designated in the arts as having a control function (such as the supervisory circuits which control the circuit breakers of an electric power network). Handling, as used above, is defined as being the active coaction between the tangible communication system or device and the intangible information or intelligence, and such coaction may assume various forms, such as transmission, storage, exhibiting, etc.

Subclass 505: Interrogator-responder
Subclass 551: Disturbance of magnetic field
Subclass 568.1: Article placement or removal (e.g., anti-theft)
Subclass 571: Alarm on protected article
Subclass 572.1: Detectable device on protected article (e.g., tag)
Subclass 572.2: Specified relationship between field and detection frequencies (e.g., nth order harmonics)
Subclass 572.3: Deactivatable by means other than mere removal
Subclass 572.5: Having tuned resonant circuit
Subclass 573.1: Human or animal
Subclass 573.4: House arrest system, wandering, or wrong place
Subclass 636.1: Battery
Subclass 636.15: By voltage