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AT&T Company

159 Case(s) (Last 5 Years)
www.att.com

Patents Prosecuted

Application numberTitle of the patentIPCFiling DateDecision Date
8175027 Key management scheme for use with electronic cards H04L, G07F Dec 28, 1993 Apr 29, 1996
8174993 Optical fiber connector bypass device and method using same Dec 28, 1993 Aug 7, 1995
8175072 Passive temperature-compensated optical wave guide coupler Dec 28, 1993 May 15, 1995
8175023 Radio frequency amplifier Dec 28, 1993 Mar 6, 1995
8174569 Methods and apparatus to verify the identity of a cellular mobile phone Dec 27, 1993 Oct 9, 1995
8178724 Routing of special emergency calls Dec 27, 1993 Aug 21, 1995
8174115 Assembly and method for adjusting brake force for passenger conveyor emergency brake Dec 27, 1993 Aug 15, 1994
8173849 Method for laser welding of optical packages Dec 26, 1993 Nov 21, 1994
8173012 Method and apparatus for removing contaminants from solder Dec 26, 1993 Feb 13, 1995
8172374 System and method for redirecting a telephone call with call merging Dec 21, 1993 Dec 30, 1996
8172370 Semiconductor device with reduced high voltage termination area and high breakdown voltage Dec 21, 1993 Jan 9, 1995
8171809 Integrated operator console Dec 21, 1993 Aug 14, 1995
8171505 Optical switch having spatial light modulators Dec 20, 1993 Jan 2, 1995
8171127 Large capacity multi-access wavelength division multiplexing packet network Dec 20, 1993 Oct 2, 1995
8169939 Method and apparatus for a reduced iteration decoder Dec 19, 1993 Jan 8, 1996
8170139 Application-oriented telecommunication system interface Dec 19, 1993 Jan 29, 1996
8170626 Transport apparatus for large network telecommunication equipment Dec 19, 1993 May 27, 1996
8170624 Repeater for soliton transmission system using sliding-frequency guiding filter Dec 19, 1993 Aug 12, 1996
8168706 Manufacture of semiconductor devices and novel lead frame assembly Dec 16, 1993 Apr 17, 1995
8169339 Canopy mounting device for exit signs and the like Dec 16, 1993 Oct 23, 1995
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