Inventor · disambiguated record
L. Dennis Shapiro
Also filed as: SHAPIRO L DENNIS
11 granted patents·475 citations·filing 1974–1997
93Inventor score
Top patents by PatentIndex Score
11 records- 0195US4524243APersonal alarm systemLIFELINE SYSTEMS INC·Filed 1983·Granted Jun 18, 1985·142 cites·42 claims
- 0284US4686697ATelephone care system with telephone line-checkingLIFELINE SYSTEMS INC·Filed 1983·Granted Aug 11, 1987·74 cites·4 claims
- 0383US4760593APersonal alarm system providing handsfree operationLIFELINE SYSTEMS INC·Filed 1986·Granted Jul 26, 1988·79 cites·11 claims
- 0480US3932870AOn-line test circuit for intrusion alarm systemsAMERICAN DISTRICT TELEGRAPH CO·Filed 1974·Granted Jan 13, 1976·24 cites·10 claims
- 0569US4884060AMulti-state selection switch for a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1988·Granted Nov 28, 1989·35 cites·16 claims
- 0664US4117479AMulti-mode intrusion alarm systemAMERICAN DISTRICT TELEGRAPH CO·Filed 1976·Granted Sep 26, 1978·19 cites·3 claims
- 0759US4884059AApparatus and method for reporting verification testing of a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1988·Granted Nov 28, 1989·18 cites·16 claims
- 0857US5870453AAutomatic control system for a remotely controllable sound producing deviceFiled 1997·Granted Feb 9, 1999·28 cites·9 claims
- 0956US5420907AAutomatic control system for a remotely controllable sound producing deviceFiled 1993·Granted May 30, 1995·26 cites·20 claims
- 1053US5091930AEnhancement of a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1990·Granted Feb 25, 1992·23 cites·14 claims
- 1150US3938118AMultizone intrusion alarm systemAMERICAN DISTRICT TELEGRAPH CO·Filed 1974·Granted Feb 10, 1976·7 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →