PHONEX CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H04B TRANSMISSION 1209
 
 
 
H04J MULTIPLEX COMMUNICATION 1124
 
 
 
H04M TELEPHONIC COMMUNICATION 1162
 
 
 
H04Q SELECTING 1109

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5911119 Secure cordless telephone extension system and methodOct 15, 96Jun 08, 99[H04M, H04Q]
5319634 Multiple access telephone extension systems and methodsOct 07, 91Jun 07, 94[H04B, H04J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0173,594 METHOD AND SYSTEM FOR RF COMMUNICATION FREQUENCY ARBITRATIONAbandonedJan 05, 10Jul 08, 10[H04B]
2002/0049,036 WIRELESS PHONE/DATA JACK USING 49 MHZ RF TECHNOLOGYAbandonedOct 13, 99Apr 25, 02[H04Q]
5029198 Telephone call responding system and control method and device thereforExpiredJan 17, 90Jul 02, 91[H04M]
4523307 Power line carrier multi telephone extension system for full duplex conferencing and intercom between telephonesExpiredNov 30, 82Jun 11, 85[H04M]
4514594 Power line carrier telephone extension system for full duplex conferencing between telephones and having telephone call hold capabilityExpiredSep 30, 82Apr 30, 85[H04M]
4495386 Telephone extension system utilizing power line carrier signalsExpiredNov 07, 83Jan 22, 85[H04M]
4479033 Telephone extension system utilizing power line carrier signalsExpiredMar 29, 82Oct 23, 84[H04M]
4475193 Power line carrier multi telephone extension system for full duplex conferencing between telephonesExpiredSep 30, 82Oct 02, 84[H04M]

Top Inventors for This Owner

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