BELL TELEPHONE LABORATORIES, INCORPORATED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 365
 
  
 
H01B CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES 371
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 2360
 
  
 
H04J MULTIPLEX COMMUNICATION 2123
 
  
 
H04M TELEPHONIC COMMUNICATION 2161
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
C22C ALLOYS 171
 
  
 
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
 
  
 
G11C STATIC STORES 1150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6638894 Devices and systems based on novel superconducting materialMar 10, 87Oct 28, 03[C04B, H01B]
6635603 Devices and systems based on novel superconducting materialMar 03, 87Oct 21, 03[C04B, H01B]
6630425 Devices and systems based on novel superconducting materialMar 18, 87Oct 07, 03[C04B, H01B]
6434121 Telephone agent call management systemAug 21, 91Aug 13, 02[H04J]
D409711 Rodent bait unitSep 18, 98May 11, 99[2206]
5416063 Method of producing a layer of superconductive oxideNov 30, 87May 16, 95[B05D]
5373180 Planar isolation technique for integrated circuitsSep 14, 93Dec 13, 94[H01L]
5149672 Process for fabricating integrated circuits having shallow junctionsAug 29, 91Sep 22, 92[H01L]
RE31423 Magnetic domain detectorMar 15, 73Oct 18, 83[G11C]
RE31319 Digital data communication systemFeb 25, 80Jul 19, 83[H04J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0108,066 OPTICAL SYSTEM FOR BARCODE SCANNERAbandonedDec 30, 08Apr 30, 09[G06K]
5237234 Harmonic electrostatic motorExpiredOct 13, 88Aug 17, 93[H02N]
5227335 Tungsten metallizationExpiredApr 30, 90Jul 13, 93[H01L]
5228030 Time division communication system frame changeover arrangementExpiredOct 31, 89Jul 13, 93[H04J]
5217808 Water blocked cable portion and methods of making sameExpiredNov 29, 89Jun 08, 93[D02G, B32B]
5187660 Arrangement for displaying on a display volumetric dataExpiredDec 01, 89Feb 16, 93[G06F]
5179626 Harmonic speech coding arrangement where a set of parameters for a continuous magnitude spectrum is determined by a speech analyzer and the parameters are used by a synthesizer to determine a spectrum which is used to determine senusoids for synthesisExpiredApr 08, 88Jan 12, 93[G10L]
5155692 Technique for routing conductive pathsExpiredAug 21, 89Oct 13, 92[G06F]
5153145 FET with gate spacerExpiredOct 17, 89Oct 06, 92[H01L]
5153909 Resource control and data handling for central office based automatic call distributorsExpiredMay 25, 89Oct 06, 92[H04M]
5150246 Administration arrangement for local area network architectureExpiredAug 31, 89Sep 22, 92[H04B]
5147825 Photonic-integrated-circuit fabrication processExpiredAug 26, 88Sep 15, 92[H01L]
5146405 Methods for part-of-speech determination and usageExpiredFeb 05, 88Sep 08, 92[G06F]
5141794 Superabsorbent article having relatively thin liquid absorbent portionExpiredNov 03, 89Aug 25, 92[A61F, A61L, B32B]
5140694 Anti-intrusion defeator and locator for communication satellitesExpiredAug 23, 89Aug 18, 92[H04B]
5134711 Computer with intelligent memory systemExpiredMay 13, 88Jul 28, 92[G06F]
5132280 Method of producing a superconductive oxide layer on a substrateExpiredSep 25, 87Jul 21, 92[B05D]
5132829 Tone spacing and power level monitor for FSK lightwave systemsExpiredDec 18, 89Jul 21, 92[H04B]
5131041 Fault tolerant interconnection networksExpiredNov 30, 89Jul 14, 92[H04J]
5126889 Technique for information protection on fault-tolerant redundant information storage devicesExpiredNov 22, 89Jun 30, 92[G06F, G11B]

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