HER MAJESTY IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF COMMUNICATIONS

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 3202
 
  
 
A61B DIAGNOSIS; SURGERY; IDENTIFICATION 1239
 
  
 
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 WAVES1108
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H01Q AERIALS 1109
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6700537 Method for calibrating a wideband direction finding systemAug 30, 01Mar 02, 04[G01S]
5563614 Low noise dual polarization electromagnetic power reception and conversion systemFeb 15, 95Oct 08, 96[H01Q]
5495548 Photosensitization of optical fiber and silica waveguidesFeb 16, 94Feb 27, 96[G02B]
5367588 Method of fabricating Bragg gratings using a silica glass phase grating mask and mask used by sameOct 29, 92Nov 22, 94[H01L, G02B]
5285944 Surgical stapler apparatusDec 06, 90Feb 15, 94[A61B]
5245340 Digital transmultiplexer with automatic threshold controllerFeb 14, 92Sep 14, 93[H03M]
5150439 Simplified WDM fused fiber coupler designMay 22, 91Sep 22, 92[G02B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5574823 Frequency selective harmonic codingExpiredJun 23, 93Nov 12, 96[G10L]
5321414 Dual polarization dipole array antennaExpiredAug 20, 93Jun 14, 94[H01Q]
5153601 Microwave polarizing lens structureExpiredApr 04, 91Oct 06, 92[H01Q]
5045862 Dual polarization microstrip array antennaExpiredDec 07, 89Sep 03, 91[H01Q]
5004316 Coupler fabrication techniques for dissimilar fibersExpiredJan 09, 86Apr 02, 91[G02B]
4955562 Microwave powered aircraftExpiredNov 16, 88Sep 11, 90[B64C]
4943811 Dual polarization electromagnetic power reception and conversion systemExpiredNov 23, 87Jul 24, 90[H01Q]
4920324 High power RF switchExpiredMay 05, 88Apr 24, 90[H01P]
4900119 Wavelength selective optical devices using optical directional couplerExpiredApr 01, 88Feb 13, 90[G02B]
4895423 Fabrication technique for low-loss fused taper directional couplers and pressure sensor produced therebyExpiredJan 03, 89Jan 23, 90[C03B, G01L, G02B, G01D]
4868575 Phase slope equalizer for satellite antennasExpiredNov 30, 87Sep 19, 89[H01P]
4833428 14/12 GHz DuplexerExpiredNov 30, 87May 23, 89[H01P]
4783850 Optoelectronic compound switching matrixExpiredMar 07, 84Nov 08, 88[H04B]
4779945 Directional coupler utilizing biconically tapered optical fibers and a method of making sameExpiredJul 24, 86Oct 25, 88[G02B]
4769818 Method and apparatus for coding digital data to permit correction of one or two incorrect data packets (bytes)ExpiredNov 21, 86Sep 06, 88[G06F]
4763977 Optical fiber coupler with tunable coupling ratio and method of makingExpiredJan 09, 85Aug 16, 88[G02B]
4727349 Depleted channel photoconductorExpiredAug 18, 86Feb 23, 88[H01L]
4715048 Frequency offset diversity receiving systemExpiredMay 02, 86Dec 22, 87[H04B]
4707064 Optical mixing/demixing deviceExpiredJul 07, 86Nov 17, 87[G02B]
4699449 Optoelectronic assembly and method of making the sameExpiredMar 05, 85Oct 13, 87[G02B]

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