AT&T WIRELESS COMMUNICATIONS PRODUCTS LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 1132
 
  
 
H03G CONTROL OF AMPLIFICATION 151
 
  
 
H04J MULTIPLEX COMMUNICATION 1124
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284
 
  
 
H04Q SELECTING 1109

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5680438 Telecommunications system having single base unit and plural individual antennas each for communication with one or more remote handsets for use within premisesDec 22, 94Oct 21, 97[H04Q]
5583854 Method of establishing a communication link in a digital cordless telephone systemApr 04, 95Dec 10, 96[H04L, H04J]
5483198 Method and apparatus for controlling amplifier powerOct 25, 94Jan 09, 96[H03G]
5363223 Illumination of displays with control which switches illuminator in response to changes in the displayNov 27, 92Nov 08, 94[G02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5337061 High performance antenna for hand-held and portable equipmentExpiredFeb 12, 92Aug 09, 94[H01Q]

Top Inventors for This Owner

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