Generating ring-back signals or tones

Industry

CPC
H04N1/32743

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

HELECTRICITY H04Electric communication H04NPICTORIAL COMMUNICATION H04N1/00Scanning, transmission or reproduction of documents or the like

Current Industry

H04N1/32743Generating ring-back signals or tones

Industries

Patents Grantslast 30 patents

Information Patent Grant
Image communication apparatus capable of performing facsimile commu...
- Patent number 10,051,137
- Issue date Aug 14, 2018
- Canon Kabushiki Kaisha
- Yutaka Inoue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication terminal apparatus
- Patent number 8,577,020
- Issue date Nov 5, 2013
- Oki Data Corporation
- Hideaki Hosoi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for validation of facsimile communication
- Patent number 7,688,956
- Issue date Mar 30, 2010
- Lexmark International, Inc.
- Duane E. Norris
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic facsimile/data/voice switch
- Patent number 5,870,458
- Issue date Feb 9, 1999
- Paul M. Pappas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Visual telephone apparatus
- Patent number 5,850,251
- Issue date Dec 15, 1998
- Canon Kabushiki Kaisha
- Shinji Tsuchida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Visual telephone apparatus
- Patent number 5,610,975
- Issue date Mar 11, 1997
- Canon Kabushiki Kaisha
- Shinji Tsuchida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Facsimile detection system and method
- Patent number 5,519,768
- Issue date May 21, 1996
- BellSouth Corporation
- Thomas J. Moquin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Facsimile machine having answering function
- Patent number 5,444,771
- Issue date Aug 22, 1995
- Murata Kikai Kabushiki Kaisha
- Toru Ohnishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Facsimile receiving method and facsimile apparatus carrying out the...
- Patent number 5,377,257
- Issue date Dec 27, 1994
- Hitachi, Ltd.
- Manabu Shirasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image telecommunication apparatus
- Patent number 5,337,349
- Issue date Aug 9, 1994
- Matsushita Graphic Communication Systems, Inc.
- Ikuko Furohashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus capable of data communication and speech co...
- Patent number 5,280,519
- Issue date Jan 18, 1994
- Ricoh Company, Ltd.
- Masato Nakajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data communication apparatus
- Patent number 5,255,311
- Issue date Oct 19, 1993
- Canon Kabushiki Kaisha
- Takehiro Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Facsimile apparatus for communicating on external and internal tele...
- Patent number 5,027,385
- Issue date Jun 25, 1991
- Tamura Electric Works, Ltd.
- Hidetoshi Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interface apparatus for communication terminal equipment units
- Patent number 4,953,199
- Issue date Aug 28, 1990
- Fuji Electric Co., Ltd.
- Takashi Hoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
IMAGE COMMUNICATION APPARATUS CAPABLE OF PERFORMING FACSIMILE COMMU...
- Publication number 20170094068
- Publication date Mar 30, 2017
- Canon Kabushiki Kaisha
- Yutaka Inoue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication terminal apparatus
- Publication number 20100091962
- Publication date Apr 15, 2010
- Oki Data Corporation
- Hideaki Hosoi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for validation of facsimile communication
- Publication number 20050286072
- Publication date Dec 29, 2005
- Duane E. Norris
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Generating ring-back signals or tones

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Image communication apparatus capable of performing facsimile commu...

Communication terminal apparatus

Method and apparatus for validation of facsimile communication

Automatic facsimile/data/voice switch

Visual telephone apparatus

Visual telephone apparatus

Facsimile detection system and method

Facsimile machine having answering function

Facsimile receiving method and facsimile apparatus carrying out the...

Image telecommunication apparatus

Communication apparatus capable of data communication and speech co...

Data communication apparatus

Facsimile apparatus for communicating on external and internal tele...

Interface apparatus for communication terminal equipment units

Patents Applicationslast 30 patents

IMAGE COMMUNICATION APPARATUS CAPABLE OF PERFORMING FACSIMILE COMMU...

Communication terminal apparatus

Method and apparatus for validation of facsimile communication