NORTHERN TELECOM INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H04B TRANSMISSION 5200
 
 
 
H01S DEVICES USING STIMULATED EMISSION299
 
 
 
B41J TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS 199
 
 
 
H04K SECRET COMMUNICATION; JAMMING OF COMMUNICATION160

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6275486 Adaptive resource allocation scheme for a fixed wireless access communications systemJan 28, 97Aug 14, 01[H04B]
6198734 Adaptive radio communications systemJan 29, 97Mar 06, 01[H04B]
5969840 Optical element power controlSep 18, 96Oct 19, 99[H01S]
5949560 Optical transmission systemFeb 05, 97Sep 07, 99[H04B]
5832032 Interference reduction in telecommunications systemsOct 28, 96Nov 03, 98[H04K]
5826181 Radio frequency noise reduction arrangementOct 10, 96Oct 20, 98[H04B]
5777773 Optical frequency control system and methodOct 31, 96Jul 07, 98[H04B]
5715265 Dispersion compensationSep 13, 96Feb 03, 98[H01S]
RE30515 High speed printerOct 16, 78Feb 17, 81[B41J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2001/0012,764 FIXED WIRELESS ACCESS CHANNEL RADIO COMMUNICATION SYSTEMABANJan 29, 97Aug 09, 01[H04M]
5950231 Memory manager systemExpiredNov 25, 96Sep 07, 99[G06F]
5939924 Integrating circuit having high time constant, low bandwidth feedback loop arrangementsExpiredOct 11, 96Aug 17, 99[H03K]
5930310 Interference reduction scheme and methodExpiredOct 25, 96Jul 27, 99[H03D]
5930714 CDMA inter-mobile switching center soft hand-offExpiredOct 24, 96Jul 27, 99[H04Q, H04B]
5187591 System for transmitting and receiving aural information and modulated dataExpiredJan 24, 91Feb 16, 93[H04N]
4571013 Connector for cable shieldsExpiredSep 30, 83Feb 18, 86[H01R]
4533864 Test instrument with flexibly connected headExpiredApr 21, 83Aug 06, 85[G01R]
4514774 Method and an apparatus for extracting tape from a tape cartridge of the internal belt-drive typeExpiredJun 30, 82Apr 30, 85[G11B]
4511936 Switch and optical sensor assembly for recorderExpiredMay 24, 82Apr 16, 85[G11B]
D276429 Combined printed circuit board carrier and component trayExpiredDec 11, 81Nov 20, 84[]
4443758 Meter to printer coupling circuitExpiredApr 10, 81Apr 17, 84[G01R]
4441647 Resoldering tool for ceramic substrate hybrid electronic circuitsExpiredJun 04, 82Apr 10, 84[B23K]
4425524 Piezoelectric switch using piezoceramic bending elements, and in particular a relay utilizing such elementsExpiredAug 27, 82Jan 10, 84[H01H]
4414426 Aerial cable terminalExpiredOct 09, 81Nov 08, 83[H01R, H02G]
4414589 Embedded servo track following system and method for writing servo tracksExpiredDec 14, 81Nov 08, 83[G11B]
D271217 Combined copy stand and electronic interface deviceExpiredJun 15, 81Nov 01, 83[D190]
4405967 Gas tube overvoltage protector with back-up gapExpiredDec 04, 81Sep 20, 83[H02H]
4398166 Compensator for CRT deflection yokes and the likeExpiredJun 01, 81Aug 09, 83[H01F]
4394123 Tiltable support bracket for slidably supporting quartz support tubes for semiconductor wafer processing boards, and processing apparatus embodying such bracketsExpiredFeb 09, 82Jul 19, 83[F27D]

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