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AT & T BELL LAB

Overview
  • Total Patents
    3,142
About

AT & T BELL LAB has a total of 3,142 patent applications. Its first patent ever was published in 1979. It filed its patents most often in United States, Republic of Korea and Norway. Its main competitors in its focus markets telecommunications, optics and semiconductors are AMERICAN TELEPHONE & TELEGRAPH, PLESSEY OVERSEAS and PLESSEY CO PLC.

Patent filings per year

Chart showing AT & T BELL LABs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Blonder Greg E 32
#2 Grimes Gary J 29
#3 Netravali Arun N 26
#4 Knauer Scott C 20
#5 Miller David A B 20
#6 Richards Gaylord W 18
#7 Tsang Won-Tien 18
#8 Dragone Corrado 18
#9 Zydzik George J 17
#10 Arroyo Candido J 16

Latest patents

Publication Filing date Title
US5434403A Method and apparatus for reading bar codes with a television camera
US5339384A Code-excited linear predictive coding with low delay for speech or audio signals
KR0135491B1 Telemetering access arrangement
US5367140A Method for laser welding of optical packages
US5442693A Integrated operator console
US5406620A Method of allocating international transit traffic among a plurality of carriers in a terminating country
US5363443A Differing frequency sine wave generation from a look-up table
US5360987A Semiconductor photodiode device with isolation region
US5323404A Optical fiber laser or amplifier including high reflectivity gratings
US5367589A Optical fiber package
US5345542A Proportional replication mapping system
US5355845A Temperature measurement in power generator boilers
US5355345A Fully scalable memory apparatus
US5363398A Absorption resonant rare earth-doped micro-cavities
US5402516A Optical fiber apparatus
US5346118A Surface mount solder assembly of leadless integrated circuit packages to substrates
US5370237A Method and apparatus for attaching connectors to a cable
US5361276A All digital maximum likelihood based spread spectrum receiver
US5365362A Ultra-high capacity non-soliton optical transmission using optical phase conjugation
US5387269A Methods for making planar waveguides with removal of a sacrifical member which surrounds the core