NOKIA (DEUTSCHLAND) GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B23H WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL 120
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 1100
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5349149 Dual-purpose fluid for cutting and electrical discharge machiningApr 01, 92Sep 20, 94[B23H]
RE30643 Method of aluminizing the inside of the panel of a television picture tubeFeb 25, 80Jun 09, 81[H01J, C23C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5323469 Conical loudspeaker having a conical stabilizing element joined between an underside of a speaker membrane and an outside surface of a speaker moving coil carrierExpiredJul 30, 92Jun 21, 94[H04R]
5315385 Inverting the phase of the carrier of a first signal on a line-by-line basis to prevent co-channel interference with a second independently transmitted signalExpiredMar 13, 92May 24, 94[H04N]
5293009 Dust protection cap for conical loudspeakerExpiredMay 20, 92Mar 08, 94[G10K]
5267093 Video recorder having phase-displaced video recording channelsExpiredApr 19, 91Nov 30, 93[G11B]
5231493 Video receiver with permanent electronic program journalExpiredJan 18, 90Jul 27, 93[H04N]
5202559 Ball-and-socket switch for detecting and signalling selectable inclination directions of a base planeExpiredMay 18, 92Apr 13, 93[G01D]
5188870 High-resolution, passively controlled liquid crystal displayExpiredMay 17, 91Feb 23, 93[G02F]
5173812 Videorecorder for adding data signals on previously recorded signals, having playback signal phase comparator meansExpiredApr 19, 91Dec 22, 92[H04N]
5172187 Method of determining the pretilt angle of liquid crystal moleculesExpiredApr 05, 91Dec 15, 92[G01N]
5172255 Process for increasing pretilt angles in nematic liquid crystal cellsExpiredApr 20, 92Dec 15, 92[G02F]
5164697 Input keyboard for an electronic appliance in entertainment electronicsExpiredApr 03, 91Nov 17, 92[H01C]
5157558 Video recording unit featuring switching logic means for generating phase shifting matrix groupsExpiredAug 09, 90Oct 20, 92[H04N]
5120623 Method of producing a substrate plate for a liquid crystal cell with black matrix areasExpiredDec 07, 90Jun 09, 92[G03C]
5108332 Method of manufacturing a liquid-crystal cellExpiredDec 28, 90Apr 28, 92[H01J]
5106441 Method and jig for LCD-productionExpiredJan 25, 90Apr 21, 92[B32B]
5102685 Method and jig for LCD-productionExpiredFeb 08, 90Apr 07, 92[B05D]
5071228 Black-white liquid crystal display having an insulation layer for blocking the diffusion of sodium ions from the glass of the cell plate to the polyphenylene of the orientation layerExpiredDec 19, 89Dec 10, 91[G02F]
5030955 Remote control transmitterExpiredJul 10, 90Jul 09, 91[G08C, H01H]
5027097 Saddle-coil arrangement for a cathode ray tube and a coil carrier for such an arrangementExpiredJun 22, 90Jun 25, 91[H01F]
5024031 Radial expansion/retraction truss structuresExpiredApr 06, 90Jun 18, 91[E04B]

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