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Class Information
Number: 379/55.1
Name: Telephonic communications > Having near field link (e.g., capacitive, inductive)
Description: Subject matter having a transceiver, a base station, and a limited range system (i.e., field strength=k/d where k is a constant and d=distance between the transceiver and base station antennas) whereby signal transfer is inductive or capacitive, rather than electromagnetic.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7580509 |
Telephone hook switch using non-contact capacitive sensor and telephone using the same |
Aug. 25, 2009 |
| 7421246 |
Wireless communication device and a method for controlling the same |
Sep. 2, 2008 |
| 7224992 |
Four pole stereo headset with push to talk capability in a duplex radio |
May. 29, 2007 |
| 6925315 |
Telephone handset with thumb-operated tactile keypad |
Aug. 2, 2005 |
| 6880761 |
Method for loading data onto chip cards and devices adapted thereto |
Apr. 19, 2005 |
| 6477502 |
Method and apparatus for using non-symmetric speech coders to produce non-symmetric links in a wireless communication system |
Nov. 5, 2002 |
| 6223018 |
Intra-body information transfer device |
Apr. 24, 2001 |
| 6154635 |
Antenna driving device for transponder |
Nov. 28, 2000 |
| 6091779 |
Process for the wireless transmitting of energy and data |
Jul. 18, 2000 |
| 6031492 |
Mobile cradle antenna and heat sink enhancement |
Feb. 29, 2000 |
| 5995591 |
Connecting arrangement for reducing induced noise |
Nov. 30, 1999 |
| 5949291 |
Cordless telephone with digital frequency adjustment |
Sep. 7, 1999 |
| 5940447 |
Wireless powered communication device using power signal sampling and method |
Aug. 17, 1999 |
| 5809429 |
Radiating coaxial cable and radio communication system using same |
Sep. 15, 1998 |
| 5625883 |
System for wireless information transmission between two different rooms |
Apr. 29, 1997 |
| 5329576 |
Wireless communication zone management system |
Jul. 12, 1994 |
| 5293400 |
Contactless linking device for interconnecting data bus sections |
Mar. 8, 1994 |
| 5257290 |
Transmission line termination of guide-communications wire for guided vehicles |
Oct. 26, 1993 |
| 5247575 |
Information distribution system |
Sep. 21, 1993 |
| 5230085 |
Method and apparatus for wireless electromagnetic communication within a contained electromagnetic field |
Jul. 20, 1993 |
| 5115463 |
Extended cordless telephone system |
May. 19, 1992 |
| 4993060 |
Portable device for use by a news reporter |
Feb. 12, 1991 |
| 4918745 |
Multi-channel cochlear implant system |
Apr. 17, 1990 |
| 4908869 |
Induction-based assistive listening system |
Mar. 13, 1990 |
| 4866732 |
Wireless telephone system |
Sep. 12, 1989 |
| 4792965 |
Oscillator system for detecting a selected one of a plurality of tuned circuits |
Dec. 20, 1988 |
| 4747158 |
Cordless communications system |
May. 24, 1988 |
| 4736452 |
Core coupled transmitter/receiver loops for connectorless entertainment systems |
Apr. 5, 1988 |
| 4697283 |
Telephone handset with integrated flux coil |
Sep. 29, 1987 |
| 4694292 |
Digitized decoder-receiver for receiving call signal |
Sep. 15, 1987 |
| 4602255 |
Luggage door unlocking device for vehicle |
Jul. 22, 1986 |
| 4584707 |
Cordless communications system |
Apr. 22, 1986 |
| 4528677 |
Data transmission system |
Jul. 9, 1985 |
| 4462113 |
Cordless transmitting and receiving apparatus |
Jul. 24, 1984 |
| 4352200 |
Wireless aircraft passenger audio entertainment system |
Sep. 28, 1982 |
| 4301335 |
Visual telephone or other annuciator ringing indicator |
Nov. 17, 1981 |
| 4117271 |
Inductive communication system |
Sep. 26, 1978 |
| 4101835 |
Method and electronic control device for radio telephone communication |
Jul. 18, 1978 |
| 3967201 |
Wireless subterranean signaling method |
Jun. 29, 1976 |
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