Inventor · disambiguated record
John Penn
Also filed as: PENN JOHN · PENN JOHN R · PENN JOHN R III
3 granted patents·42 citations·filing 1975–2011
71Inventor score
Top patents by PatentIndex Score
3 records- 0181US9232827B1Orthopedic protective helmetPENN JOHN·Filed 2011·Granted Jan 12, 2016·23 cites·4 claims
- 0250US4220685APassive fire protection systemGRUMMAN AEROSPACE CORP·Filed 1978·Granted Sep 2, 1980·11 cites·12 claims
- 0343US3972391ALining wear sensorBENDIX CORP·Filed 1975·Granted Aug 3, 1976·8 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →