MITEL SEMICONDUCTOR LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H03F AMPLIFIERS 974
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 6279
 
  
 
H03K PULSE TECHNIQUE 5126
 
  
 
H03B GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS 459
 
  
 
H03D DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER 346
 
  
 
H04B TRANSMISSION 3207
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 2157
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES2107
 
  
 
G06G ANALOGUE COMPUTERS 251
 
  
 
H03C MODULATION 224

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6642787 Differential amplifier with two long-tailed pairs of transistorsMar 16, 00Nov 04, 03[H03F]
6608871 Data slicersJan 06, 99Aug 19, 03[H04L, H03D]
6597899 Image reject mixer circuit arrangementsNov 04, 98Jul 22, 03[H04B]
6480066 AmplifiersNov 02, 00Nov 12, 02[H03F]
6407632 Radio frequency amplifierJul 05, 00Jun 18, 02[H03F]
6304071 Phase detector that samples a read signal at sampling points and delayJan 06, 99Oct 16, 01[G01R]
6304142 Variable transconductance amplifierJun 08, 00Oct 16, 01[H03F]
6266381 Frequency control arrangementJan 22, 98Jul 24, 01[H04L]
6211718 Low voltage double balanced mixerJan 07, 98Apr 03, 01[G06G]
6147568 Radio-frequency variable attenuatorFeb 26, 99Nov 14, 00[H03H]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6460164 Integration of externally developed logic in a memory mapped systemExpiredDec 08, 99Oct 01, 02[G06F]
6408036 Detection circuitsExpiredAug 14, 98Jun 18, 02[H04L]
6359942 FSK demodulatorExpiredJul 06, 98Mar 19, 02[H03D]
6324388 Image reject mixer circuit arrangementsExpiredSep 03, 99Nov 27, 01[H04B]
6308058 Image reject mixerExpiredJan 07, 98Oct 23, 01[H04B]
6278299 Voltage to current converterExpiredJan 10, 00Aug 21, 01[H02M]
6249482 Synchronous memoryExpiredFeb 04, 00Jun 19, 01[G11C]
6198678 Semiconductor memoriesExpiredJun 21, 99Mar 06, 01[G11C]
6047031 Error correction circuitExpiredMar 31, 97Apr 04, 00[H04L]
6035030 Re-establishment of a private circuit in a telecommunications systemExpiredNov 18, 97Mar 07, 00[H04M]
6005466 Trimmable inductor structureExpiredJul 24, 95Dec 21, 99[H01F]
5936879 Programmable logic arraysExpiredJul 01, 97Aug 10, 99[G11C]
5912587 Active filter stackExpiredOct 29, 96Jun 15, 99[H03F]
5874862 Phase-locked loops having two amplifiers for driving a vcoExpiredMar 31, 97Feb 23, 99[H03L]
5821903 Conformal antenna for wireless local area network transceiversExpiredNov 07, 95Oct 13, 98[H01Q]
5815214 Oscillatory signal generator arrangementExpiredDec 04, 95Sep 29, 98[H03L, H04N]
5812023 Voltage offset compensation circuitExpiredFeb 21, 96Sep 22, 98[H03F]
5796294 Circuits for generating a current which is proportional to absolute temperatureExpiredJun 19, 96Aug 18, 98[G05F]
5793264 LAN equalizerExpiredOct 02, 96Aug 11, 98[H03H]
5786701 Bare die testingExpiredApr 01, 96Jul 28, 98[G01R]

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Top Inventors for This Owner

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