Individual holder
HART FRANK J
US·3 granted patents·347 citations·filing 1988–1991
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0193US5299971AInteractive tracking deviceHART FRANK J·Filed 1991·Granted Apr 5, 1994·263 cites·16 claims
- 0281US5083968AInteractive toyHART FRANK J·Filed 1990·Granted Jan 28, 1992·47 cites·12 claims
- 0374US4930236APassive infrared display devicesHART FRANK J·Filed 1988·Granted Jun 5, 1990·37 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when HART FRANK J files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →