СПИСОК патентов США - подгруппа МПК16 H04M1/74
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| № п/п | Номер патента | Название патента | |||
2017 | |||||
| 1 | 9570904 | Transmission bandwidth extender/category 6 surge protector | |||
2016 | |||||
| 2 | 9363364 | Method for correcting telephone signal degradation caused by the length of the analog line via the receiver | |||
2015 | |||||
| 3 | 9167077 | Surge protection circuit and communication apparatus | |||
2014 | |||||
| 4 | 8848504 | DSL alien noise reduction | |||
| 5 | 8666059 | Method and device for processing data and to a communication system comprising such device | |||
2006 | |||||
| 6 | 7046798 | System and method for subliminal time domain duplexing | |||
2005 | |||||
| 7 | 6914963 | Determining the composition of subscriber loops from frequency domain measurements | |||
| 8 | 6876742 | High-voltage protection circuitry in a data access arrangement | |||
| 9 | 6842520 | Telephone | |||
2004 | |||||
| 10 | 6788953 | Wireless local loop communication system using SLIC module | |||
| 11 | 6782098 | Protection circuit/method for subscriber telephone interface circuit | |||
| 12 | 6757386 | Apparatus, system, and method for efficient reduction of electromagnetic interference in telecommunications equipment | |||
| 13 | 6748077 | Station interface and protector with built in redundancy | |||
| 14 | 6744883 | Filter system and method to suppress interference imposed upon a frequency-division multiplexed channel | |||
| 15 | 6731752 | Method and circuit for echo-cancellation in two-way communications | |||
| 16 | 6714647 | Network interface unit with subscriber line daughter boards | |||
2003 | |||||
| 17 | 6665400 | Low-voltage transistor circuit for suppressing high-voltage surges in a telephone line interface circuit | |||
| 18 | 6661893 | Telephone loop monitoring and isolation system | |||
| 19 | 6643270 | Method of compensating for systemic impairments in a telecommunications network | |||
| 20 | 6628782 | Ring voltage termination by means of a spare fuse | |||
| 21 | 6608899 | Telephone circuit surge protection module | |||
| 22 | 6606231 | Integrated telephony subscriber line protection and filter device | |||
| 23 | 6507654 | Line interface battery feed arrangements with PTC resistors | |||
2002 | |||||
| 24 | 6480604 | Balanced spectrum limiter for telephone and communication systems and protection module incorporating the same | |||
| 25 | 6473507 | Apparatus and method for isolating transients associated with a digital subscriber line | |||
| 26 | 6434220 | Long-distance transmission system and device | |||
| 27 | 6418222 | High current protection circuit for telephone interface | |||
| 28 | 6418220 | Extended feedback circuit employing capacitive coupling and sampled data filters | |||
| 29 | 6411680 | Telephonic apparatus and input device for telephonic apparatus | |||
| 30 | 6384946 | Electrical isolation between IR receiver and further electronic circuits | |||
| 31 | 6342999 | Current surge absorbing wire winding box | |||
2001 | |||||
| 32 | 6327301 | Detection and adaptation to digital network impairments by PCM modems | |||
| 33 | 6298134 | System for protecting telecommunications equipment from transient voltages | |||
| 34 | 6275581 | Extended feedback circuit employing capacitive coupling and sampled data filters | |||
| 35 | 6259589 | Protection apparatus applied to a telephone line | |||
| 36 | 6229890 | Network interface device with automatic connector closure | |||
| 37 | 6205201 | Telephone line testing device | |||
| 38 | 6186834 | Enhanced communication connector assembly with crosstalk compensation | |||
| 39 | 6185296 | Ring trip circuit for stopping call signal at different timing from zero-crossing point of call signal | |||
| 40 | 6185083 | Protected telecommunication test adapter module | |||
| 41 | 6178162 | Method and apparatus for inhibiting echo in a channel of a communication system | |||
| 42 | 6176742 | Capacitive crosstalk compensation arrangement for communication connectors | |||
2000 | |||||
| 43 | 6163447 | Telephone equipment protection circuit | |||
| 44 | 6151392 | Telecommunications protector panel connector assembly | |||
| 45 | 6134321 | Modem loop current detect system to detect an off-hook condition in an extension telephone | |||
| 46 | 6128368 | Apparatus for monitoring telecommunication transmission | |||
| 47 | 6111936 | Method and apparatus for automatically detecting and measuring distortion in a DSL system | |||
| 48 | 6091338 | System and method for safety protection of XDSL circuitry | |||
| 49 | 6088446 | Protection circuit for use with a telephone appliance and methods of use | |||
| 50 | 6078662 | Radio frequency interference filter | |||
| 51 | 6060972 | Method and means for replacing an electrically conducting cable by another electrically conducting cable | |||
| 52 | 6055435 | Wireless telephone connection surge suppressor | |||
1999 | |||||
| 53 | 5975924 | Grounding mechanism with integrated strain relief | |||
| 54 | 5959815 | Method and apparatus for detecting potentially damaging electrical fields | |||
| 55 | 5953194 | Arrangement for protecting telecommunications equipment from voltage transients | |||
| 56 | 5888085 | Network interface device with switchable contacts | |||
| 57 | 5883953 | Telephone and data communications line protection module and grounding spring clip | |||
| 58 | 5878132 | High-frequency noise elimination for use in telephone systems | |||
| 59 | 5867083 | Protective device for surge current protection of associated equipment in communications systems | |||
| 60 | 5857010 | Power-failure resistant communication system | |||
1998 | |||||
| 61 | 5818923 | System and method for supressing pulse dialing feedback occurring particularly with auxiliary acoustic ringers in socket telephone systems | |||
| 62 | 5815918 | Method for replacing an electrically conducting cable by another electrically conducting cable | |||
| 63 | 5809109 | Integrated ring sensor with fault detection | |||
| 64 | 5802170 | Customer bridge module | |||
| 65 | 5783999 | Audio warning device for use with a line current protection circuit in a PCMCIA-architecture modem card | |||
| 66 | 5777836 | Line current protection circuit and method for use with a PCMCIA-architecture modem card | |||
| 67 | 5719917 | Circuit for activating back-up lines | |||
| 68 | 5717558 | Electrostatic discharge protection for an electrical device | |||
1997 | |||||
| 69 | 5696660 | Line current protection circuit for use with a PCMCIA-architecture modem card | |||
| 70 | 5694460 | Circuit and method for reducing common mode interference in telephone instruments | |||
| 71 | 5661624 | Foldback current limiting of a telephone line switch | |||
| 72 | 5642416 | AM broadcast band interference filter for line-powered telephone | |||
| 73 | 5640451 | Power cross detection using loop current and voltage | |||
| 74 | 5638440 | Protection circuit for telephone systems | |||
| 75 | 5637011 | Wire termination device | |||
| 76 | 5606592 | Method and apparatus for analyzing resistive faults on telephones cables | |||
| 77 | 5602914 | Device for limiting the working voltage for mechanical switches in telephony | |||
| 78 | 5596470 | Fault current protection circuit for an auxiliary device in a digital telephone system | |||
1996 | |||||
| 79 | 5553136 | Modular device for telephone network interface apparatus | |||
| 80 | 5539801 | Removable telephone line protection module for an electronic device | |||
| 81 | 5537471 | Weatherproof telephone station protectors | |||
| 82 | 5532898 | Line current protection circuit for use with a PCMCIA-architecture modem card | |||
| 83 | 5513059 | Arrangement for protecting telecommunications equipment from voltage transients | |||
| 84 | 5502760 | Telephone-line dedicating apparatus | |||
| 85 | 5500895 | Telephone isolation device | |||
| 86 | 5497417 | Switching device for transmitting telecommunication signals | |||
1995 | |||||
| 87 | 5459783 | Acoustic feedback suppression device particulary for auxiliary ringers in plug-in telephone systems | |||
| 88 | 5448636 | Device for limiting the working voltage mechanical switches in telephony | |||
| 89 | 5416663 | Arrangement for protecting telecommunications equipment from voltage transients | |||
| 90 | 5402465 | Telephone trouble isolator | |||
| 91 | 5390231 | Protection and recovery of telephone line interface circuits | |||
1994 | |||||
| 92 | 5359657 | Telephone line overvoltage protection apparatus | |||
| 93 | 5357568 | Telephone line overvoltage protection method and apparatus | |||
| 94 | 5347565 | Order wire device having function for reducing noise in communication system having a plurality of order wire devices | |||
| 95 | 5315651 | Active surge rejection circuit | |||
1993 | |||||
| 96 | 5222131 | Telephone protector including removable fuse holder | |||
| 97 | 5208718 | Protection circuit | |||
1992 | |||||
| 98 | 5172412 | Subscriber circuit capable of suppressing in-phase induced noise | |||
1991 | |||||
| 99 | 5073924 | Telephone line noise filter apparatus | |||
1990 | |||||
| 100 | 4971581 | Connector guard for a telephone line overvoltage protection device | |||
| 101 | 4947426 | Telephone protection circuit | |||
| 102 | 4926473 | Longitudinal balance system | |||
| 103 | 4896352 | Telephone set circuit including an overvoltage protection | |||
| 104 | 4893337 | Circuit arrangement for a digital telephone station | |||
1989 | |||||
| 105 | 4876713 | Signal circuit protector device for consumer use | |||
| 106 | 4817204 | Optical communication apparatus and method for telephone supervisory and audio signals | |||
1988 | |||||
| 107 | 4727571 | Circuit for surge voltage protection in electronic telephone stations | |||
1987 | |||||
| 108 | 4634814 | Surge protected electronic switch for telephone voiceband circuits | |||
1986 | |||||
| 109 | 4607142 | Transformer flux compensation circuit | |||
| 110 | 4571460 | Active impedance line feed circuit with improved ground fault protection | |||
1984 | |||||
| 111 | 4449157 | Surge protection for signal transmission systems | |||
1983 | |||||
| 112 | 4375015 | Improved electronic hybrid circuit | |||
1982 | |||||
| 113 | 4357494 | Impedance canceller circuit | |||
| 114 | 4350964 | Impedance generator circuit | |||
1981 | |||||
| 115 | 4283604 | Current source circuits with common mode noise rejection | |||
| 116 | 4264787 | Hazardous voltage protection circuit | |||
| 117 | 4254442 | Circuit for the protection of telephone lines | |||
1980 | |||||
| 118 | 4213012 | Discriminating means for telephone circuits | |||
| 119 | 4203006 | Direct access coupler | |||
1979 | |||||
| 120 | 4169215 | Signal limiting circuit | |||
| 121 | 4152549 | Suppressor of spurious ringing currents for telephone apparatus | |||
1978 | |||||
| 122 | 4079211 | Protection device for a subscriber's telephone set | |||
| 123 | 4068282 | Protective device for low current transmission circuits | |||
1977 | |||||
| 124 | 4048647 | Solid state disconnect device | |||
1976 | |||||
| 125 | 3962664 | Current protector | |||
| 126 | 3961229 | Two pair station protector | |||
| 127 | 3947730 | Telephone line surge protecting device | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||