Ringing

Industry

CPC
H04Q2213/18

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Parent Industries

HELECTRICITY H04Electric communication H04QSELECTING H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems

Current Industry

H04Q2213/18Ringing

Industries

Patents Grantslast 30 patents

Information Patent Grant
Call waiting response status
- Patent number 6,577,722
- Issue date Jun 10, 2003
- Agere Systems Inc.
- Robert Alan Lippincott
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Distinctive ringing and distinctive call-waiting tones in an ISDN
- Patent number 5,953,407
- Issue date Sep 14, 1999
- Nortel Networks Corporation
- Genzao Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ISDN-based high speed communication system
- Patent number 5,832,240
- Issue date Nov 3, 1998
- Allen J Larsen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus providing improved information on the state...
- Patent number 5,648,971
- Issue date Jul 15, 1997
- Canon Kabushiki Kaisha
- Yukihiko Ogata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital added main line system with power-up and power-down features
- Patent number 5,627,833
- Issue date May 6, 1997
- Raychem Corporation
- David C. Bliven
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus for responding to calls to a different appa...
- Patent number 5,583,930
- Issue date Dec 10, 1996
- Canon Kabushiki Kaisha
- Yukihiko Ogata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus with improved sub-address recall
- Patent number 5,572,580
- Issue date Nov 5, 1996
- Canon Kabushiki Kaisha
- Yukihiko Ogata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice and video communication apparatus
- Patent number 5,510,829
- Issue date Apr 23, 1996
- Canon Kabushiki Kaisha
- Akira Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital added main line system
- Patent number 5,473,613
- Issue date Dec 5, 1995
- Raychem Corporation
- David C. Bliven
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital added main line system
- Patent number 5,459,730
- Issue date Oct 17, 1995
- Raychem Corporation
- David C. Bliven
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital added main line system
- Patent number 5,459,729
- Issue date Oct 17, 1995
- Raychem Corporation
- David C. Bliven
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for interfacing analog telephone in ISDN terminal adapter
- Patent number 5,459,788
- Issue date Oct 17, 1995
- Samsung Electronics Co., Ltd.
- Ho-jun Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ISDN terminal adapter for access from analog signal equipment of fo...
- Patent number 5,341,418
- Issue date Aug 23, 1994
- NEC Corporation
- Atsushi Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interface for a data telephone and data terminal in a digital telep...
- Patent number 5,317,630
- Issue date May 31, 1994
- AT&T Bell Laboratories
- Lee A. Feinberg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interface for ISDN channels
- Patent number 5,113,396
- Issue date May 12, 1992
- Canon Kabushiki Kaisha
- Naoto Kagami
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication terminal apparatus
- Patent number 5,073,922
- Issue date Dec 17, 1991
- Canon Kabushiki Kaisha
- Naoyuki Okada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone apparatus and a method of controlling same
- Patent number 5,056,083
- Issue date Oct 8, 1991
- Kabushiki Kaisha Toshiba
- Jun Sasano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Message signaling arrangement between a switching system and user t...
- Patent number 4,741,026
- Issue date Apr 26, 1988
- American Telephone and Telegraph Company, AT&T Bell Laboratories
- Leslie A. Baxter
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Call waiting response status

Distinctive ringing and distinctive call-waiting tones in an ISDN

ISDN-based high speed communication system

Communication apparatus providing improved information on the state...

Digital added main line system with power-up and power-down features

Communication apparatus for responding to calls to a different appa...

Communication apparatus with improved sub-address recall

Voice and video communication apparatus

Digital added main line system

Digital added main line system

Digital added main line system

Apparatus for interfacing analog telephone in ISDN terminal adapter

ISDN terminal adapter for access from analog signal equipment of fo...

Interface for a data telephone and data terminal in a digital telep...

Interface for ISDN channels

Communication terminal apparatus

Telephone apparatus and a method of controlling same

Message signaling arrangement between a switching system and user t...