QUORTECH GLOBAL SOLUTIONS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04M TELEPHONIC COMMUNICATION 5158
 
  
 
F16M FRAMES, CASINGS, OR BEDS, OF ENGINES OR OTHER MACHINES OR APPARATUS, NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS OR SUPPORTS134
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 1132

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D452230 Wall phone componentOct 29, 99Dec 18, 01[1403]
D452231 Wall phone componentOct 29, 99Dec 18, 01[1403]
D451910 Wall phone componentOct 29, 99Dec 11, 01[1403]
D451500 Wall phone componentOct 29, 99Dec 04, 01[1403]
D435838 Wall phoneOct 29, 99Jan 02, 01[1403]
D408404 Pay telephone housing with programmable keys and LCD displayMar 18, 98Apr 20, 99[1403]
5315648 Retainer member for anchoring a telephone handset to a telephone housingDec 09, 92May 24, 94[H04M]
5311582 Integrated cocot and regulated paystation telephone systemJan 19, 93May 10, 94[H04M]
5216707 Circuit for firing paystation coin relay using power derived from telephone line tip/ring voltageAug 06, 91Jun 01, 93[H04M]
5187739 Answer supervision circuit for paystation telephone with non-muted microphoneAug 06, 91Feb 16, 93[H04M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6304643 Pay phone deposit method for limiting overpayment by a customerExpiredAug 03, 99Oct 16, 01[H04M]
6249574 Anti-stuffing deviceExpiredSep 24, 99Jun 19, 01[H04M]
6206167 Coin turning coin-entrance chuteExpiredSep 27, 99Mar 27, 01[G07F]
6186310 Coin escrow apparatusExpiredMay 14, 99Feb 13, 01[G07D]
6072863 Apparatus for conditioning automatic coin validation signals, and method-of-use thereforExpiredApr 01, 98Jun 06, 00[H04M]
5978458 Magnetic pay telephone cash box proximity switchExpiredAug 01, 97Nov 02, 99[H04M]
5818916 Method and apparatus for preventing return dial tone fraud in a cellular paystationExpiredJun 20, 95Oct 06, 98[H04M]
5007079 Coin fraud prevention unit and modular configurations for pay telephone stationsExpiredOct 20, 89Apr 09, 91[H04M, G07F]
4918724 Coin fraud preventing unit and modular configurations for pay telephone stationsExpiredSep 15, 89Apr 17, 90[H04M, G07F]

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