EXFO INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04B TRANSMISSION 28182
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 17189
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR1255
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 11194
 
  
 
1004 OTHER MEASURING INSTRUMENTS, APPARATUS AND DEVICES927
 
  
 
H04J MULTIPLEX COMMUNICATION 5120
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 4281
 
  
 
1404 SCREEN DISPLAYS AND ICONS456
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 375
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS297

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0237,800 SYSTEM AND METHOD OF COMMUNICATING WITH AND CONTROLLING A TEST DEVICESep 02, 16Aug 17, 17[H04L, G06F]
2015/0242,294 Network Test SystemDec 03, 14Aug 27, 15[G06F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9921373 Fiber-optic connector mating assembly for optical test instrumentsDec 16, 14Mar 20, 18[G01M, G02B]
9915790 Fiber inspection microscope and power measurement system, fiber inspection tip and method using sameDec 08, 15Mar 13, 18[G01M, G01N, G02B]
9900087 Multimode launch systems for use in performing an OTDR measurement on a multi-fiber array DUT and method of performing sameSep 12, 16Feb 20, 18[G01M, H04B, G02B]
9880359 Adapter tip and microscope system for inspection of fiber-optic connector endfaceMay 20, 16Jan 30, 18[F21V, G01M, G01N, G02B]
9858137 Network test systemDec 03, 14Jan 02, 18[G06F]
9841579 Multiple-fiber connector inspectionAug 26, 14Dec 12, 17[H04N, G01M, G02B]
9829429 Determining a polarization-related characteristic of an optical linkFeb 14, 13Nov 28, 17[G01M, G01N, G06F]
9831948 Optical power measurement in a passive optical networkSep 13, 16Nov 28, 17[H04B, H04J]
9825700 Method and system for measuring an optical power attenuation value of a multimode device under test, receive device and computer-readable memoryJul 27, 16Nov 21, 17[G01M, H04B]
D798171 Module for use in a test instrumentDec 08, 15Sep 26, 17[1004]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0218,802 METHOD AND SYSTEM FOR MEASURING AN OPTICAL POWER ATTENUATION VALUE OF A MULTIMODE DEVICE UNDER TEST, RECEIVE DEVICE AND COMPUTER-READABLE MEMORYAbandonedDec 11, 15Jul 28, 16[H04B]
2013/0215,417 SYSTEM AND METHOD FOR DETERMINING OPTICAL DISTRIBUTION NETWORK CONNECTIVITYAbandonedAug 17, 12Aug 22, 13[G01N]
2012/0093,501 In-Band Optical Noise Measurement Using Differential Polarization ResponseAbandonedAug 19, 10Apr 19, 12[H04B]
7995915 Method and apparatus for testing transmission lines normally propagating optical signalsExpiredMar 05, 07Aug 09, 11[H04B]
7920253 Polarization optical time domain reflectometer and method of determining PMDExpiredSep 29, 06Apr 05, 11[G01J, G01N]
2010/0073,667 Method and Apparatus for Determining Differential Group Delay and Polarization Mode DispersionAbandonedSep 28, 09Mar 25, 10[G01N]
7426021 Interferometric optical analyzer and method for measuring the linear response of an optical componentExpiredNov 28, 05Sep 16, 08[G01N]
7382810 Widely-tunable laser apparatusExpiredJan 12, 07Jun 03, 08[H01S]
2008/0100,828 Polarization-sensitive optical time domain reflectometer and method for determining PMDAbandonedMar 28, 07May 01, 08[G01N]
6992828 Optical attentuator systemExpiredJul 05, 02Jan 31, 06[G02B]
6856398 Method of and apparatus for making wavelength-resolved polarimetric measurementsExpiredOct 23, 02Feb 15, 05[G01N, G01B]
6819429 Multi-pass optical spectrum analyzer having a polarization-dependent tunable filterExpiredApr 06, 01Nov 16, 04[G01B]
6762829 Measurement of optical properties of passive optical devices using the matrix methodExpiredFeb 27, 03Jul 13, 04[G01N]
6724469 Polarization-OTDR for measuring characteristics of optical fibersExpiredMar 14, 03Apr 20, 04[G01N]
6621067 Polarization independent photodetector device and method of making sameExpiredMar 02, 01Sep 16, 03[G02F]
6612750 Adapter for interconnecting optical fiber connectorsExpiredAug 24, 98Sep 02, 03[G02B]
6445773 DMT test method for determining ADSL capability of cablesExpiredJun 14, 00Sep 03, 02[H04M]
5305078 Measurement of attenuation of optical fibers using transmitted wavelength and power informationExpiredJan 21, 92Apr 19, 94[G01N]

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