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H04J 3/177

Freeze-out systems

Official title: {Freeze-out systems, e.g. taking away active sources from transmission}

H04J3/177 (Freeze-out systems) appears on 11 US grants and 0 published applications in this corpus.

Search patents in H04J

Granted patents: 11
Published applications: 0
Assignees: 9
Inventors: 28
Latest grant: 28 Apr 1998

Filings by year

H04J 3/177: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	1	0
1977	1	0
1978	1	0
1979	0	0
1980	1	0
1981	2	0
1982	0	0
1983	1	0
1984	0	0
1985	0	0
1986	0	0
1987	0	0
1988	0	0
1989	0	0
1990	0	0
1991	1	0
1992	0	0
1993	0	0
1994	0	0
1995	2	0
1996	0	0
1997	0	0
1998	1	0

By publication year. Applications have been published since 2001.

Recent patents

Speech information freeze-out control method and equipment in mobile satellite communication system28 Apr 1998US 5,745,492 ANTT Mobile Communications Network, Inc.
Method and appartus for controlling multimedia information communication19 Dec 1995US 5,477,542 AHitachi, Ltd.
Method and apparatus for establishing a full-duplex, concurrent, voice/non-voice connection between two sites31 Oct 1995US 5,463,616 AAdvanced Protocol Systems, Inc.
System for and method of multiplexing speech signals utilizing priority signals for individual transmission channels12 Feb 1991US 4,993,022 AHitachi, Ltd.
Buffering speech signals in a TASI system3 May 1983US 4,382,296 ANorthern Telecom Limited

Most cited

By later US patents