PHONEX CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H04B TRANSMISSION 1184
 
 
 
H04J MULTIPLEX COMMUNICATION 1118
 
 
 
H04M TELEPHONIC COMMUNICATION 1149
 
 
 
H04Q SELECTING 1108

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5,911,119 Secure cordless telephone extension system and methodOct 15, 96Jun 08, 99[H04M, H04Q]
5,319,634 Multiple access telephone extension systems and methodsOct 07, 91Jun 07, 94[H04J, H04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0173,594 METHOD AND SYSTEM FOR RF COMMUNICATION FREQUENCY ARBITRATIONABANJan 05, 10Jul 08, 10[H04B]
2002/0049,036 WIRELESS PHONE/DATA JACK USING 49 MHZ RF TECHNOLOGYABANOct 13, 99Apr 25, 02[H04Q]
5,029,198 Telephone call responding system and control method and device thereforExpiredJan 17, 90Jul 02, 91[H04M]
4,523,307 Power line carrier multi telephone extension system for full duplex conferencing and intercom between telephonesExpiredNov 30, 82Jun 11, 85[H04M]
4,514,594 Power line carrier telephone extension system for full duplex conferencing between telephones and having telephone call hold capabilityExpiredSep 30, 82Apr 30, 85[H04M]
4,495,386 Telephone extension system utilizing power line carrier signalsExpiredNov 07, 83Jan 22, 85[H04M]
4,479,033 Telephone extension system utilizing power line carrier signalsExpiredMar 29, 82Oct 23, 84[H04M]
4,475,193 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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