Protel, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G07D SORTING, TESTING, CHANGING, DELIVERING, OR OTHERWISE HANDLING COINS; TESTING OR CHANGING PAPER CURRENCY; TESTING SECURITIES, BONDS, OR SIMILAR VALUABLE PAPERS 235
 
  
 
G07F COIN- FREED OR LIKE APPARATUS 157
 
  
 
H04M TELEPHONIC COMMUNICATION 1162

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D430149 Handset cable plate for a pay telephoneSep 21, 99Aug 29, 00[1403]
D429711 Pay telephoneSep 21, 99Aug 22, 00[1403]
D429712 Front face bezel for a pay telephoneSep 21, 99Aug 22, 00[1403]
5841847 Billing systemApr 11, 97Nov 24, 98[H04M]
5568854 Coin discrimination methodOct 04, 94Oct 29, 96[G07D]
5351798 Coin discrimination apparatus and methodMar 08, 93Oct 04, 94[G07D]
5191957 Coin discrimination methodJun 28, 91Mar 09, 93[G07F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7239694 Integrated circuit configurations and methods for providing functions for public telephonesExpiredJul 02, 01Jul 03, 07[H04M]
6850607 Intelligent vending system and methodExpiredOct 05, 01Feb 01, 05[H04M]
6625267 Billing systemExpiredDec 04, 99Sep 23, 03[H04M]
6301344 Intelligent public telephone system and methodExpiredNov 04, 98Oct 09, 01[H04M]
6044138 Billing systemExpiredNov 20, 98Mar 28, 00[H04M]
5903629 Apparatus and method for automated audio teleconferencing having enhanced reconfiguration featuresExpiredOct 15, 96May 11, 99[H04M]
5687830 Item discrimination apparatus and methodExpiredApr 17, 96Nov 18, 97[G07D]
D375953 Telephone card reader consoleExpiredNov 03, 95Nov 26, 96[]
5430797 Coin return coverExpiredOct 19, 93Jul 04, 95[H04M]
5027390 Coin validation method and apparatus for a coin telephone or similar system having an escrow mechanismExpiredJun 06, 89Jun 25, 91[H04M]
4860346 Telephone system and method operated from central office loop currentExpiredDec 22, 86Aug 22, 89[H04M]
4860345 Telephone system and method operated from central office loop currentExpiredJul 11, 88Aug 22, 89[H04M]
D299341 Housing for a key pad, carrier select and credit card bezel for coin telephonesExpiredMay 08, 87Jan 10, 89[]
D299133 Key pad and credit card bezel for coin telephonesExpiredMay 08, 87Dec 27, 88[]
4759050 Intelligent toll telephone system and methodExpiredDec 22, 86Jul 19, 88[H04M]
4759054 Toll telephone system and method for maintaining or initiating loop current after resuming on-hook conditionExpiredDec 22, 86Jul 19, 88[H04M]

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