BELL-NORTHERN RESEARCH LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04B TRANSMISSION 2208
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 1197
 
  
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 196
 
  
 
G11C STATIC STORES 1150
 
  
 
H01Q AERIALS 1109
 
  
 
H03K PULSE TECHNIQUE 1130
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1110
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6253173 Split-vector quantization for speech signal involving out-of-sequence regrouping of sub-vectorsOct 20, 97Jun 26, 01[G10L]
6104935 Down link beam forming architecture for heavily overlapped beam configurationMay 05, 97Aug 15, 00[H04B]
5995956 Questionless cased-based knowledge and a method for constructing the sameAug 27, 97Nov 30, 99[G06F]
5923304 Omnidirectional antenna schemeApr 25, 97Jul 13, 99[H01Q]
5890054 Emergency mobile routing protocolNov 14, 96Mar 30, 99[H04B]
5793231 Current memory cell having bipolar transistor configured as a current source and using field effect transistor (FET) for current trimmingApr 18, 97Aug 11, 98[H03K, H03M, G11C]
5668911 Storage holders for optical fibersJul 11, 96Sep 16, 97[G02B]
5655033 Method for extracting corresponding point in plural imagesJun 17, 94Aug 05, 97[G06K]
5276584 Electronic unitApr 02, 93Jan 04, 94[H05K]
5155446 Digital FSK demodulatorNov 14, 91Oct 13, 92[H04L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6336109 Method and apparatus for inducing rules from data classifiersExpiredApr 15, 97Jan 01, 02[G06N]
6104930 Floating transceiver assignment for cellular radioExpiredMay 02, 97Aug 15, 00[H04B]
6072866 Path replacement schemeExpiredApr 30, 97Jun 06, 00[H04M]
5969926 Short circuit protection arrangement for an output buffer of an integrated circuitExpiredMar 19, 97Oct 19, 99[H02H]
5898332 Time delay charge integration circuitExpiredMar 28, 97Apr 27, 99[G06G]
5884486 Thermoelectric humidity pump and method for dehumidfying of an electronic apparatusExpiredJun 19, 97Mar 23, 99[F25B]
5796582 Printed circuit board and heat sink arrangementExpiredNov 21, 96Aug 18, 98[H05K]
5567659 Method of etching patterns in III-V material with accurate depth controlExpiredMay 25, 95Oct 22, 96[H01L]
5371475 Low noise oscillators and tracking filtersExpiredJun 03, 93Dec 06, 94[H03H]
D348458 Handheld telephoneExpiredJun 14, 93Jul 05, 94[]
5239682 Inter-cell call hand-over in radio communication systems with dynamic channel allocationExpiredJun 06, 91Aug 24, 93[A04B, H04B]
5193068 Method of inducing off-circuit behavior in a physical modelExpiredOct 01, 90Mar 09, 93[G06F]
D330028 Base for a telephone setExpiredMay 23, 91Oct 06, 92[]
5071211 Connector holders and distribution frame and connector holder assemblies for optical cableExpiredOct 18, 89Dec 10, 91[G02B]
5027178 Electrically tunable interference filters and methods for their useExpiredAug 03, 89Jun 25, 91[H01L, G02F]
5027392 Speaker drive arrangement for loudspeaker telephoneExpiredJul 12, 89Jun 25, 91[H04M]
5021880 Digital video signal compressionExpiredJun 13, 90Jun 04, 91[H04N]
5001707 Method of providing reserved bandwidth in a dual bus systemExpiredNov 02, 89Mar 19, 91[H04J]
4994909 Video signal distribution systemExpiredMay 04, 89Feb 19, 91[H04N, H04J]
4987375 Carrier lock detector for a QAM systemExpiredFeb 15, 90Jan 22, 91[H04L]

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