involving a separate line for each pair of parties

Industry

CPC
H04M9/04

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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M9/00Interconnection arrangements not involving centralised switching

Current Industry

H04M9/04involving a separate line for each pair of parties

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Interface device for intercom access control systems
- Patent number 12,206,826
- Issue date Jan 21, 2025
- Amazon Technologies, Inc.
- Aaron Lung
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Speaker phone noise suppression method and apparatus
- Patent number 8,976,956
- Issue date Mar 10, 2015
- Avaya Inc.
- Paul Roller Michaelis
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Mobile communication terminal apparatus
- Patent number 8,744,533
- Issue date Jun 3, 2014
- Kyocera Corporation
- Tomoaki Miwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication terminal apparatus
- Patent number 8,478,354
- Issue date Jul 2, 2013
- Kyocera Corporation
- Tomoaki Miwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
In-vehicle handsfree apparatus
- Patent number 8,190,214
- Issue date May 29, 2012
- Denso Corporation
- Yousuke Kimura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for controlling notification characteristics of a...
- Patent number 8,140,127
- Issue date Mar 20, 2012
- Broadcom Corporation
- Hui Luo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and apparatus for silencing communication devices
- Patent number 7,956,748
- Issue date Jun 7, 2011
- AT&T Intellectual Property I, L.P.
- Wayne Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and apparatus for silencing communication devices
- Patent number 7,626,504
- Issue date Dec 1, 2009
- AT&T Intellectual Property I, L.P.
- Wayne Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Incoming call management in a push-to-talk communication system
- Patent number 7,433,680
- Issue date Oct 7, 2008
- Clarity Communications Systems Inc.
- William Wesley Jenkins
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Subset switching means in apparatus for a key telephone system for...
- Patent number 4,081,615
- Issue date Mar 28, 1978
- Litton Business Telephone Systems, Inc.
- Steven Jon Hoehn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for a key telephone system for enabling intercom substati...
- Patent number 4,064,371
- Issue date Dec 20, 1977
- Litton Business Telephone Systems, Inc.
- Steven Jon Hoehn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for a key telephone system for enabling intercom substati...
- Patent number 4,016,372
- Issue date Apr 5, 1977
- Litton Business Telephone Systems, Inc.
- Steven Jon Hoehn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
3175045
- Patent number 3,175,045
- Issue date Mar 23, 1965
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
3036162
- Patent number 3,036,162
- Issue date May 22, 1962
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
2346548
- Patent number 2,346,548
- Issue date Apr 11, 1944
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Interface Device for Intercom Access Control Systems
- Publication number 20240098187
- Publication date Mar 21, 2024
- AMAZON TECHNOLOGIES, INC.
- Aaron Lung
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SPEAKER PHONE NOISE SUPPRESSION METHOD AND APPARATUS
- Publication number 20140133647
- Publication date May 15, 2014
- AVAYA INC.
- Paul Roller Michaelis
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
MOBILE COMMUNICATION TERMINAL APPARATUS
- Publication number 20130267281
- Publication date Oct 10, 2013
- Tomoaki MIWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and Method for Controlling Notification Characteristics of a...
- Publication number 20120178423
- Publication date Jul 12, 2012
- BROADCOM CORPORATION
- Hui Luo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MOBILE COMMUNICATION TERMINAL APPARATUS
- Publication number 20110319141
- Publication date Dec 29, 2011
- Kyocera Corporation
- Tomoaki MIWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND APPARATUS FOR SILENCING COMMUNICATION DEVICES
- Publication number 20100041343
- Publication date Feb 18, 2010
- AT&T Intellectual Property I, L.P.
- WAYNE CHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
In-vehicle handsfree apparatus
- Publication number 20090209296
- Publication date Aug 20, 2009
- DENSO CORPORATION
- Yousuke Kimura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND APPARATUS FOR SILENCING COMMUNICATION DEVICES
- Publication number 20080254781
- Publication date Oct 16, 2008
- AT&T KNOWLEDGE VENTURES, L.P.
- WAYNE CHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for controlling notification characteristics of a...
- Publication number 20060264245
- Publication date Nov 23, 2006
- Hui Luo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile communication device with adaptive audible user notification
- Publication number 20060014569
- Publication date Jan 19, 2006
- BROADCOM CORPORATION
- Matthew DelGiorno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Incoming call management in a push-to-talk communication system
- Publication number 20050164682
- Publication date Jul 28, 2005
- William Wesley Jenkins
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

involving a separate line for each pair of parties

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Interface device for intercom access control systems

Speaker phone noise suppression method and apparatus

Mobile communication terminal apparatus

Mobile communication terminal apparatus

In-vehicle handsfree apparatus

System and method for controlling notification characteristics of a...

System and apparatus for silencing communication devices

System and apparatus for silencing communication devices

Incoming call management in a push-to-talk communication system

Subset switching means in apparatus for a key telephone system for...

Apparatus for a key telephone system for enabling intercom substati...

Apparatus for a key telephone system for enabling intercom substati...

3175045

3036162

2346548

Patents Applicationslast 30 patents

Interface Device for Intercom Access Control Systems

SPEAKER PHONE NOISE SUPPRESSION METHOD AND APPARATUS

MOBILE COMMUNICATION TERMINAL APPARATUS

System and Method for Controlling Notification Characteristics of a...

MOBILE COMMUNICATION TERMINAL APPARATUS

SYSTEM AND APPARATUS FOR SILENCING COMMUNICATION DEVICES

In-vehicle handsfree apparatus

SYSTEM AND APPARATUS FOR SILENCING COMMUNICATION DEVICES

System and method for controlling notification characteristics of a...

Mobile communication device with adaptive audible user notification

Incoming call management in a push-to-talk communication system