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| Number | Title | Issue Date |
| 7373133 | Recharging method and apparatus The present invention provides apparatus and an associated method for remotely energizing power storage devices. Energization may preferably be effected through the use of RF energy from a base station, ambient energy or ultra-wide band energy. The remote station pr... | 05/13/2008 |
| 7167090 | Far-field RF power extraction circuits and systems A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-fie... | 01/23/2007 |
| 7164344 | Non-contact IC card reading/writing apparatus A non-contact IC card reading/writing apparatus having a superior reception characteristic includes a loop antenna, a resonant circuit unit, a wireless transmitting unit, and a wireless receiving unit. The resonant circuit unit, the wireless transmitting unit, and t... | 01/16/2007 |
| 7075418 | Multiband antenna system with tire pressure sensor A multiband antenna system includes a multiband antenna adapted to receive signals in a given frequency range, such as CB, and a trap to isolate signals in the tire pressure monitoring frequency ranges so that when it is mounted to the exterior of a vehicle in conve... | 07/11/2006 |
| 4580276 | System and method for transporting data A private local area network (LAN) is created for use with a variety of transmission media for the purpose of exchanging data preassigned addresses, and control signals according to simplified protocols. The LAN members can consist of any combination of c... | 04/01/1986 |
| 4420752 | Real-time parameter sensor-transmitter A system for monitoring at least one parameter of either an energized electrical power line conductor or at least one parameter adjacent to the power line conductor, on a real-time basis and transmitting signals indicative of the parameter to a remote loc... | 12/13/1983 |
| 4344066 | Noise trap arrangement for AC power line communication systems A noise trap circuit which suppresses noise in a communication system of the type used in hotels and motels to transmit encoded communication signals such as room status information. The communication signals are transmitted on the neutral and ground line... | 08/10/1982 |
| 4190790 | Isolator circuit for use with frequency sensitive switching circuit An isolator circuit for use with a switching circuit for energizing a ballasted load in response to a control signal of preselected frequency superimposed on AC power circuits which supply the load. In the switching circuit, a triac is gated to conduct th... | 02/26/1980 |
| 4123748 | Burglar alarms utilizing ultrasonic waves Burglar alarms utilizing ultrasonic waves in which ultrasonic waves transmitted from a wave transmitting oscillator are reflected by such objects as doors, windows, floors, walls, etc. and such reflected ultrasonic waves will be received by a wave receivi... | 10/31/1978 |
| 3978469 | Method and apparatus for communicating in building structures and parts thereof particularly multi-story building There is disclosed a method and apparatus for communicating in multi- and single story building structures and parts thereof wherein a signal voltage source is connected to a metallic building structural member which is an integral part of the building. M... | 08/31/1976 |
