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VARIABLE SPEECH CONTROL

Overview
  • Total Patents
    11
About

VARIABLE SPEECH CONTROL has a total of 11 patent applications. Its first patent ever was published in 1980. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets telecommunications, computer technology and audio-visual technology are SOLANA TECHNOLOGY DEV CORP, SOUMAGNE JOEL and IBM OESTERREICH INTERNATIONALE.

Patent filings in countries

World map showing VARIABLE SPEECH CONTROLs patent filings in countries
# Country Total Patents
#1 United States 5
#2 Canada 2
#3 EPO (European Patent Office) 2
#4 WIPO (World Intellectual Property Organization) 2

Patent filings per year

Chart showing VARIABLE SPEECH CONTROLs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wong Stephen 4
#2 Mackay Kent W 4
#3 Kornfeld Irwin H 3
#4 Klasco Michael A 3
#5 Eppler Jr William G 2
#6 Nathanson Rex 1
#7 Leslie Jr George F 1
#8 Leslie George F Jr 1
#9 Leslie George E 1
#10 Leslie George 1

Latest patents

Publication Filing date Title
US4700391A Method and apparatus for pitch controlled voice signal processing
CA1262973A Audio channel stacking with speech compression for narrow band transmission with provision for dialed calls
US4586174A Audio channel stacking with speech compression for narrow band transmission with provision for dialed calls
EP0155285A1 Audio channel stacking with speech compression for narrow band transmission with provision for dialed calls.
WO8404989A1 Method and apparatus for pitch period controlled voice signal processing
US4417103A Stereo reproduction with gapless splicing of pitch altered waveforms
US4415772A Gapless splicing of pitch altered waveforms
US4406001A Time compression/expansion with synchronized individual pitch correction of separate components