LIFELINE SYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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
5228079 Method and apparatus for pulse/tone detection and selectionJul 12, 91Jul 13, 93[H04M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D376330 Communicator for a personal emergency response systemExpiredJul 28, 95Dec 10, 96[]
D372435 Communicator for a personal emergency response systemExpiredJul 28, 95Aug 06, 96[]
D338843 Home communicator for a personal emergency response systemExpiredAug 13, 91Aug 31, 93[]
D338844 Personal security alarmExpiredFeb 11, 92Aug 31, 93[]
D333996 Personal security alarmExpiredAug 13, 91Mar 16, 93[]
D313362 Wireless communicator for a personal emergency response systemExpiredNov 30, 88Jan 01, 91[]
D313363 Home communicator for a personal emergency response systemExpiredDec 06, 88Jan 01, 91[]
4686697 Telephone care system with telephone line-checkingExpiredNov 21, 83Aug 11, 87[H04M]
4656319 Alarm system testerExpiredMay 21, 85Apr 07, 87[H04M]
4622544 Low battery indicatorExpiredMay 13, 85Nov 11, 86[G08B]
4565902 Telephone care system with supplementary alarm messageExpiredNov 21, 83Jan 21, 86[H04M]
4524243 Personal alarm systemExpiredJul 07, 83Jun 18, 85[H04M]
D277465 Portable emergency alarm transmitterExpiredJan 10, 83Feb 05, 85[]
4491970 Portable transmitter for emergency alarm system having watertight enclosureExpiredDec 30, 82Jan 01, 85[H04B]

Top Inventors for This Owner

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