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Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set
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CPC
H04M9/003
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
H
ELECTRICITY
H04
Electric communication
H04M
TELEPHONIC COMMUNICATION
H04M9/00
Interconnection arrangements not involving centralised switching
Current Industry
H04M9/003
Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set
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Patents Grants
last 30 patents
Information
Patent Grant
Computer-programmed telephone-enabled devices for processing and ma...
Patent number
11,811,973
Issue date
Nov 7, 2023
GREEN KEY TECHNOLOGIES, INC.
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Computer-programmed telephone-enabled devices for processing and ma...
Patent number
11,546,474
Issue date
Jan 3, 2023
GREEN KEY TECHNOLOGIES, INC.
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Systems, methods and computer program products for controlling the...
Patent number
11,487,499
Issue date
Nov 1, 2022
IPC Systems, Inc.
Brett R. Berkowitz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Systems, methods and computer program products for controlling the...
Patent number
10,996,918
Issue date
May 4, 2021
IPC Systems, Inc.
Brett R. Berkowitz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Computer-programmed telephone-enabled devices for processing and ma...
Patent number
10,893,149
Issue date
Jan 12, 2021
GREEN KEY TECHNOLOGIES, INC.
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Systems, methods and computer program products for performing activ...
Patent number
10,545,722
Issue date
Jan 28, 2020
IPC Systems, Inc.
Stephen J. Minutillo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Incoming-call number notification apparatus, exchange, incoming-cal...
Patent number
10,397,409
Issue date
Aug 27, 2019
NEC PLATFORMS, LTD.
Kotaro Miyata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems, methods and computer program products for performing call...
Patent number
10,261,751
Issue date
Apr 16, 2019
IPC Systems, Inc.
Stephen J. Minutillo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Intercom system for collective housing
Patent number
10,084,924
Issue date
Sep 25, 2018
AIPHONE CO., LTD.
Norio Maruyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems, methods and computer program products for performing call...
Patent number
10,031,717
Issue date
Jul 24, 2018
IPC Systems, Inc.
Stephen J. Minutillo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for software turret phone capabilities
Patent number
9,369,587
Issue date
Jun 14, 2016
Avaya Inc.
Doree Duncan Seligmann
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Computer-programmed telephone-enabled devices for processing and ma...
Patent number
9,178,773
Issue date
Nov 3, 2015
Green Key Technologies LLC
Anthony Tassone
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Tone sending device of electronic private branch exchange
Patent number
6,744,876
Issue date
Jun 1, 2004
NEC Corporation
Hidekazu Kanazashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Emulation of phone extensions in a packet telephony distribution sy...
Patent number
6,697,358
Issue date
Feb 24, 2004
2Wire, Inc.
Jeffrey G. Bernstein
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus allowing remote key system units to interoperate
Patent number
6,661,883
Issue date
Dec 9, 2003
Nortel Networks Limited
Michael T. Dowser
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit for attenuation of echos caused by line variations and an i...
Patent number
6,408,008
Issue date
Jun 18, 2002
Creative Integrated Systems, Inc.
James A. Komarek
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Power saving control apparatus for simple electronic exchange system
Patent number
5,937,061
Issue date
Aug 10, 1999
SamSung Electronics Co., Ltd.
Ki-Wook Kim
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Play and plug telephone system
Patent number
5,887,054
Issue date
Mar 23, 1999
Lucent Technologies Inc.
Edmund Thomas Burke
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of improving computer communication speed in key telephone s...
Patent number
5,732,129
Issue date
Mar 24, 1998
LG Electronics Inc.
Kie-Bok Lee
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Analog multibutton telephone keysets
Patent number
5,699,419
Issue date
Dec 16, 1997
Lucent Technologies Inc.
Menachem Tsur Ardon
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for printing key telephone designation strips
Patent number
5,659,603
Issue date
Aug 19, 1997
Lucent Technologies Inc.
Thomas Paul Orlofsky
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key telephone system capable of simulation by button operations
Patent number
5,640,448
Issue date
Jun 17, 1997
NEC Corporation
Fumiyoshi Toyoshima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Full-duplex adapter for PBX telephone system
Patent number
5,550,901
Issue date
Aug 27, 1996
Coherent Communications Systems Corp.
Arthur B. Williams
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Home and small business phone system for operation on a single inte...
Patent number
5,548,592
Issue date
Aug 20, 1996
Creative Integrated Systems, Inc.
James A. Komarek
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Automatic call distributor with telephonic call holding system
Patent number
5,546,454
Issue date
Aug 13, 1996
Noreen A. Harrington
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Identification of called directory number at multiple directory num...
Patent number
5,544,235
Issue date
Aug 6, 1996
AT&T Corp.
Menachem T. Ardon
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone apparatus with dial key display for external line status
Patent number
5,517,551
Issue date
May 14, 1996
Canon Kabushiki Kaisha
Shunji Arai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Trading telephone
Patent number
5,465,292
Issue date
Nov 7, 1995
Hitachi Telecom Technologies, Ltd.
Toshie Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone exchange including less display elements than channels
Patent number
5,381,468
Issue date
Jan 10, 1995
Canon Kabushiki Kaisha
Isamu Ozawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of synchronizing LEDS between a digital telephone and remote...
Patent number
5,339,360
Issue date
Aug 16, 1994
ROLM Company
Norman Endick
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
COMPUTER-PROGRAMMED TELEPHONE-ENABLED DEVICES FOR PROCESSING AND MA...
Publication number
20240031490
Publication date
Jan 25, 2024
GREEN KEY TECHNOLOGIES, INC.
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
COMPUTER-PROGRAMMED TELEPHONE-ENABLED DEVICES FOR PROCESSING AND MA...
Publication number
20230109198
Publication date
Apr 6, 2023
GREEN KEY TECHNOLOGIES, INC.
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR CONTROLLING THE...
Publication number
20210200508
Publication date
Jul 1, 2021
IPC SYSTEMS, INC.
Brett R. Berkowitz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
COMPUTER-PROGRAMMED TELEPHONE-ENABLED DEVICES FOR PROCESSING AND MA...
Publication number
20210084171
Publication date
Mar 18, 2021
GREEN KEY TECHNOLOGIES, INC.
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR PERFORMING CALL...
Publication number
20190179603
Publication date
Jun 13, 2019
IPC SYSTEMS, INC.
Stephen J. Minutillo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
COMPUTER-PROGRAMMED TELEPHONE-ENABLED DEVICES FOR PROCESSING AND MA...
Publication number
20190037079
Publication date
Jan 31, 2019
Green Key Technologies LLC
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR PERFORMING CALL...
Publication number
20180307459
Publication date
Oct 25, 2018
IPC SYSTEMS, INC.
Stephen J. Minutillo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
INCOMING-CALL NUMBER NOTIFICATION APPARATUS, EXCHANGE, INCOMING-CAL...
Publication number
20180227431
Publication date
Aug 9, 2018
NEC PLATFORMS, LTD.
Kotaro MIYATA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMPUTER-PROGRAMMED TELEPHONE-ENABLED DEVICES FOR PROCESSING AND MA...
Publication number
20180109682
Publication date
Apr 19, 2018
Green Key Technologies LLC
Anthony Tassone
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
INTERCOM SYSTEM FOR COLLECTIVE HOUSING
Publication number
20180027124
Publication date
Jan 25, 2018
AIPHONE CO., LTD.
Norio MARUYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR PERFORMING CALL...
Publication number
20160373584
Publication date
Dec 22, 2016
IPC SYSTEMS, INC.
Stephen J. Minutillo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM AND METHOD FOR SOFTWARE TURRET PHONE CAPABILITIES
Publication number
20140241340
Publication date
Aug 28, 2014
AVAYA INC.
Doree Duncan SELIGMANN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIGITAL TELEPHONE INTERFACE DEVICE
Publication number
20090110161
Publication date
Apr 30, 2009
Steve Darrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Emulation of phone extensions in a packet telephony distribution sy...
Publication number
20030026247
Publication date
Feb 6, 2003
Jeffrey G. Bernstein
H04 - ELECTRIC COMMUNICATION TECHNIQUE