MARCONI UK INTELLECTUAL PROPERTY LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204
 
  
 
H04J MULTIPLEX COMMUNICATION 1124

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6456596 Synchronous transmission systemsMar 29, 99Sep 24, 02[H04J]
5229833 Optical sensorSep 26, 91Jul 20, 93[G01N]
5175778 Integrated optic waveguide coupler with reduced wavelength sensitivityAug 15, 91Dec 29, 92[G02B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7243772 Coin-validation arrangementExpiredFeb 01, 01Jul 17, 07[G07D]
7127634 Communications system for and method of recovering from communications failureWithdrawnJul 02, 01Oct 24, 06[G06F]
2006/0153,260 Erbium doped fibersAbandonedOct 14, 03Jul 13, 06[H01S]
2005/0226,627 Dispersion compensation in optical communications systemsAbandonedApr 05, 05Oct 13, 05[H04B]
6801173 Structure with switchable magnetic propertiesExpiredDec 16, 02Oct 05, 04[H01G]
2004/0028,333 Tunable optical filterAbandonedJul 31, 03Feb 12, 04[G02B]
6539083 Inductive coin validation system and payphone using such systemExpiredJan 14, 00Mar 25, 03[H04M]
6501781 Arrangement for aligning the light beam paths of a group of laser diodes on a common spot, especially for providing pumping light for a solid state laserExpiredAug 11, 99Dec 31, 02[H01S]
6456641 High-frequency semiconductor laser moduleExpiredOct 27, 99Sep 24, 02[H01S]
6400483 Optical signal transmission with thermooptically controlled optical switchingExpiredMar 02, 99Jun 04, 02[H04B]
2002/0041,604 SDH MULTIPLEXER WITH AIM FACILITIESAbandonedJan 09, 98Apr 11, 02[H04J]
6169784 Telecommunication line termination testExpiredSep 01, 98Jan 02, 01[H04M]
6125043 Circuit board arrangement with accurately positioned components mounted thereonExpiredSep 15, 98Sep 26, 00[H01L]
5887106 Management of optical fiberExpiredMar 31, 97Mar 23, 99[G02B]
5870519 Slice tray with an adaptor having windowsExpiredJun 28, 96Feb 09, 99[G02B]
5841912 Optical switching deviceExpiredFeb 24, 97Nov 24, 98[G02F]
5696862 Optical transmitting and receiving device having a surface-emitting laserExpiredOct 11, 95Dec 09, 97[G02B]
5682423 Electrical power and telephone ringer signal distribution systemExpiredMay 28, 96Oct 28, 97[H04M]
5601731 Process for the production of an optoelectronic component having a defined axial variation of the coupling coefficient and a defined axial distribution of the phase shiftExpiredMar 09, 95Feb 11, 97[H01L, B44C]
5600741 Arrangement for coupling optoelectronic components and optical waveguides to one anotherExpiredMay 03, 95Feb 04, 97[G02B]

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