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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
8038752 Apparatus and method for detecting telephone line status Mar 25, 1993 Feb 6, 1995
8037776 Path testing and/or monitoring within a multiple node telecommunication system Mar 24, 1993 Jul 18, 1994
8035143 Polarization compensated integrated optical filters and multiplexers Mar 18, 1993 Aug 22, 1994
8033912 Optical communication system with multiple fiber monitoring Mar 18, 1993 Jul 11, 1994
8034938 Semiconductor wafer cleaning and rinsing techniques using re-ionized water and tank overflow Mar 17, 1993 Aug 8, 1994
8033038 Gas burner assembly for simulating a natural log fire Mar 17, 1993 Jun 13, 1994
8030516 Subband color video coding using a reduced motion information subband Mar 11, 1993 Apr 3, 1995
8030938 Adjustable terminations in equipment housing for cables Mar 11, 1993 Dec 5, 1994
8030501 System for continuously monitoring curing energy levels within a curing unit Mar 11, 1993 May 22, 1995
8030931 Low-delay subband adaptive filter Mar 11, 1993 Jul 11, 1994
8029749 Optical lithographical imaging system including optical transmission diffraction devices Mar 10, 1993 Jun 13, 1994
8025714 Electron beam lithography with reduced charging effects Mar 1, 1993 Feb 21, 1994
8026364 Article comprising a tunable semiconductor laser Feb 28, 1993 Apr 4, 1994
8024695 Method and apparatus for detecting retention faults in memories Feb 28, 1993 Jan 9, 1995
8024045 Modular transformer structure providing enhanced leakage inductance and winding isolation Feb 28, 1993 Apr 3, 1995
8023458 Built-in current sensor for I.sub.DDQ testing Feb 25, 1993 Feb 20, 1995
8023306 Circuit card mounting assembly Feb 25, 1993 Feb 28, 1994
8023236 Telecommunications switch with integral feature installation capability Feb 24, 1993 Jan 23, 1995
8022249 Article that comprises a semiconductor laser, and method of operating the article Feb 24, 1993 May 9, 1994
8021702 Optical filter having multiple interferometric stages Feb 23, 1993 May 2, 1994
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