HER MAJESTY IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF COMMUNICATIONS
Patent Owner
Stats
- 7 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Mar 02, 2004 most recent publication
Details
- 7 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 2,517 Total Citation Count
- Jun 13, 1977 Earliest Filing
- 36 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4943811 Dual polarization electromagnetic power reception and conversion systemExpiredNov 23, 87Jul 24, 90[H01Q]
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]
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]
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