Inventor · disambiguated record
Ruth B. Leff
Also filed as: LEFF RUTH B
8 granted patents·229 citations·filing 1978–1999
89Inventor score
Files withLEFF RUTH B6
Top patents by PatentIndex Score
8 records- 0188US4165890ACommunication aidLEFF RUTH B·Filed 1978·Granted Aug 28, 1979·78 cites·2 claims
- 0270US4761633ACommunication aidLEFF RUTH B·Filed 1986·Granted Aug 2, 1988·35 cites·7 claims
- 0368USD363741SCabinet for instructional electronic communicationLEFF RUTH B·Filed 1993·Granted Oct 31, 1995·14 cites·1 claims
- 0467US5910009ACommunication aid using multiple membrane switchesFiled 1997·Granted Jun 8, 1999·56 cites·20 claims
- 0559US5382791ADual mode switch for handicappedFiled 1994·Granted Jan 17, 1995·16 cites·11 claims
- 0657US4954083ACommunication aidLEFF RUTH B·Filed 1989·Granted Sep 4, 1990·19 cites·15 claims
- 0741USD420205SReligious head coveringLEFF RUTH B·Filed 1999·Granted Feb 8, 2000·4 cites·1 claims
- 0837US4915632ACommunication aid with sequential lightingLEFF RUTH B·Filed 1989·Granted Apr 10, 1990·7 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Ruth B. Leff files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →