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PROTEL INC

Overview
  • Total Patents
    32
About

PROTEL INC has a total of 32 patent applications. Its first patent ever was published in 1986. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Australia. Its main competitors in its focus markets telecommunications, control and it methods for management are BILLSHRINK INC, KUNUGI TAKANOBU and AFINITI INT HOLDINGS LTD.

Patent filings in countries

World map showing PROTEL INCs patent filings in countries

Patent filings per year

Chart showing PROTEL INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Pinnell William E 9
#2 Mellon Regis B 7
#3 Hayes Stephen J 6
#4 Campbell James H 3
#5 Campbell James H Iv 3
#6 Campbell Iv James H 3
#7 Plungis Donald W 3
#8 Decorte Michael J 3
#9 Xu Tony 2
#10 Graham R William 2

Latest patents

Publication Filing date Title
US7239694B2 Integrated circuit configurations and methods for providing functions for public telephones
CA2326658A1 Service tool and method for public telephone
AU7088800A Tamper resistant coin acceptance and collection apparatus and method
US6625267B1 Billing system
WO0031955A1 Billing system
US6301344B1 Intelligent public telephone system and method
US5841847A Billing system
AU5741596A Automated audio teleconferencing having reconfiguration feat ures
US5828743A Apparatus and method for automated audio teleconferencing having enhanced access and security features
US5719928A Apparatus and method for automated audio teleconferencing having enhanced billing and reservation features
US5568854A Coin discrimination method
US5430797A Coin return cover
US5191957A Coin discrimination method
US5027390A Coin validation method and apparatus for a coin telephone or similar system having an escrow mechanism
US4860345A Telephone system and method operated from central office loop current
US4860346A Telephone system and method operated from central office loop current
US4759054A Toll telephone system and method for maintaining or initiating loop current after resuming on-hook condition
US4759050A Intelligent toll telephone system and method