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| Number | Title | Issue Date |
| 5812945 | Metered payment cellular telephone communication system This invention overcomes the disadvantages of the prior art by providing a cellular telephone metering systems that allows phone calls to be made as long as sufficient funds or call units reside in the phone. The apparatus of this invention also utilize e... | 09/22/1998 |
| 5809124 | Coin charging system for mobile telephony Coin charging system for mobile telephony in order to facilitate the making of telephone calls by means of a mobile telephone with a coin charging system, mainly in public transport means such as buses, airplanes, trains, ships etc., the system being prov... | 09/15/1998 |
| 5797101 | Radiotelephone subscriber unit having a generic phone number A radiotelephone subscriber unit (101) comprises a memory unit (259) having stored therein an identification sequence including a phone number (MIN1 and MIN2) and an electronic serial number (ESN). The phone number (MIN1 and MIN2) is common to at least on... | 08/18/1998 |
| 5752189 | Mobile communication system which prohibits service to a mobile station having an ID number upon receiving a non-coincidence notice from the mobile station A mobile communication system intended to early detect unlawful mobile station. User information about accumulated call account is totaled by the network and the mobile station individually so as to be subjected to a comparison to found an unlawful mobile... | 05/12/1998 |
| 5751798 | Passive information access system The apparatus and method of the present invention provide passive information access for use in a service subscription system having a service provider and at least one subscriber unit. The passive information access system includes a database, a receiver... | 05/12/1998 |
| 5748720 | Removable subscriber identification module for a mobile radio terminal An ability to hold a record of amount of funds prepaid for at the point of the sale is incorporated within a subscriber identity module (or "SIM") of a mobile radio terminal. This payment record will progressively decrease as services of the network are u... | 05/05/1998 |
| 5517549 | Call logging in cellular subscriber stations A system for collecting within a mobile subscriber station of a cellular radio system the key elements of telephone billing information for subsequent retrieval. Information about the connected party's number, the time of the call and the duration of the ... | 05/14/1996 |
| 5509056 | Method and apparatus for executing automatic calling card access in cellular telephones A method of placing a calling account card telephone call on a call by call basis using one of a plurality of carrier networks is disclosed. The method includes the steps of storing a plurality of data sets in accordance with requirements for use of the c... | 04/16/1996 |
| 5471643 | Radio telecommunication apparatus The cellular mobile telephone apparatus comprises a radio unit having an antenna which is connected to a base station provided in a cell via a radio channel, and a telephone unit which is connected to the radio unit via a line and is formed of a main unit... | 11/28/1995 |
| 5361297 | Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same A method and apparatus for telephone call answer supervision, capable of detecting the completion of both national and international calls, which employ different answer confirmation formats, and provide confirmation that a placed call has been answered i... | 11/01/1994 |
| 5359182 | Wireless telephone debit card system and method A wireless telephone debit card communications system comprising a radio telephone, a base station, and an end station. The radio telephone includes a processor; a reader for reading a credit amount and a telephone number of a debit card; a writer for cha... | 10/25/1994 |
| 5327482 | Public cordless telephone system with coin/card insertion inhibiting means A public cordless telephone system which comprises abase unit and a branch unit connected to the base unit through a radio link to be used by many unspecified persons. The public cordless telephone system comprises a base unit connected to a public line n... | 07/05/1994 |
| 5272747 | Mobile pay telephone system A mobile telephone system for public transportation vehicle, such as trains, cabs, etc., provides passengers with a wide variety of public services presently not available in any other system. Such services include access to facsimile machines and other p... | 12/21/1993 |
| 5220593 | Cellular radiotelephone credit card paystation method A system (10) for operating a multiplicity of credit card reader-equipped cellular mobile radiotelephones (CMRs 12) as credit card paystations is disclosed. The CMRs (12) incorporate a remotely programmable unit (RPU 48) which controls credit card operati... | 06/15/1993 |
| 5134651 | Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same A method and apparatus for telephone call answer supervision, capable of detecting the completion of both national and international calls, which employ different answer confirmation formats, and provide confirmation that a placed call has been answered i... | 07/28/1992 |
| 5109401 | Radio telecommunication apparatus capable of controlling call charges A radio telecommunication apparatus in which a telecommunication link is made between the user of the apparatus and a second party, a charge rate is obtained from a base station coupled to the apparatus, a first allowable call charge for one call is set, ... | 04/28/1992 |
| 5046085 | Interfacing system for an international-type pay-telephone An interface unit for coupling an international-type pay-telephone to a land-based or cellular telephone system. The interfacing unit of the invention has a microcomputer, and an associated EPROM in which is stored the exchanges of the telephone numbers t... | 09/03/1991 |
| 4777646 | Communication system Cellular mobile telephone stations which are intended for installation and use in public transportation facilities, e.g., taxicabs, limousines, rental cars, etc. are equipped to support credit card billing of transient customers for use of the station ser... | 10/11/1988 |
| 4776003 | Cellular mobile radio credit card system Cellular mobile telephone stations which are intended for installation and use in public transportation facilities, e.g., taxicabs, limousines, rental cars, etc. are equipped to support credit card billing of transient customers for use of the station ser... | 10/04/1988 |
| 4776000 | Telephone communications system with portable handsets This is a telephone communications system having at least one fixed terminal connected by at least one subscriber's line to a telephone exchange and a plurality of portable handsets, the fixed terminal and the portable handsets having infrared transmitter... | 10/04/1988 |
| 4727569 | Hardwire airplane telephone apparatus Telephone apparatus mounted on an airplane food and beverage tray which is pivotable from a storage position nearly flush with the back of a seat of an airplane to a position of use, and includes a telephone handset that in a storage position in a tray re... | 02/23/1988 |
| 4640986 | Mobile radio communication system A mobile radio communication system having a plurality of fixed stations respectively connected to a plurality of subscriber's lines extending from a telephone exchange, and a plurality of mobile stations linked with the fixed stations through radio chann... | 02/03/1987 |
