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MULTIPLEX DEV CORP

Overview
  • Total Patents
    11
About

MULTIPLEX DEV CORP has a total of 11 patent applications. Its first patent ever was published in 1950. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets telecommunications and audio-visual technology are CODESTREAM TECHNOLOGIES CORP, FOUNDER COMMUNICATIONS INC and FIFTH RES INST OF TELECOMM TECHNOLOGY.

Patent filings in countries

World map showing MULTIPLEX DEV CORPs patent filings in countries
# Country Total Patents
#1 United States 4
#2 Canada 3
#3 Germany 2
#4 United Kingdom 2

Patent filings per year

Chart showing MULTIPLEX DEV CORPs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Telecommunications
#2 Audio-visual technology

Top inventors

# Name Total Patents
#1 Halstead William S 6
#2 Halstead William Storm 2
#3 Olerud Roy A 1

Latest patents

Publication Filing date Title
GB684307A Improvements in multiplex radio communications systems
DE1008793B Frequency-modulated radio transmission system with additional multiplex transmission
GB689534A Improvements in multiplex communications system
US2776429A Multiplex communications system
US2709254A Subscription radio broadcasting system and equipment therefor
US2697745A Multiplex communications system
US2696611A Multipdex communication system
CA520370A Multiplex communications system
CA518558A Multiplex communications system
CA588988A Multiplex communication system