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ROCHESTER TELEPHONE CORP

Overview
  • Total Patents
    12
About

ROCHESTER TELEPHONE CORP has a total of 12 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States and Canada. Its main competitors in its focus markets telecommunications are HASTINGS RUBEN C M, ANIP INC and NIPPO TSUSHIN KOGYO KK.

Patent filings in countries

World map showing ROCHESTER TELEPHONE CORPs patent filings in countries
# Country Total Patents
#1 United States 9
#2 Canada 3

Patent filings per year

Chart showing ROCHESTER TELEPHONE CORPs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Telecommunications

Focus technologies

Top inventors

# Name Total Patents
#1 Heffernan Stuart D 4
#2 Vincent William J 4
#3 Maring Donald G Sr 2
#4 Gordon Harry E 2
#5 Andrews Henry J Jr 1
#6 Allen Richard W 1
#7 Talbot Emmett D 1
#8 Mendes Mark A 1
#9 Maring Donald G 1
#10 Teumer Christopher R 1

Latest patents

Publication Filing date Title
US4945555A Method and means for remote testing of unused telephone lines
CA1091374A Control circuit for transfer of auxiliary telephone equipment
US4140879A Control circuit for transfer of auxiliary telephone equipment
US4063037A Telephone metering interface with reverse signal sensor
CA950140A Apparatus for protecting and testing telephone networks
US2523657A Multiparty message rate line circuit
US2392890A Telephone traffic indicating and recording means
US2413825A Time warning arrangement for telephone systems
US2108909A Telephone system
US2028851A Telephone pay station apparatus
US1821193A Telephone system