Individual holder
BLACK JOHN O
5 granted patents·60 citations·filing 1974–1979
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0165US3934843AFree wing for convertible aircraft structureBLACK JOHN O·Filed 1974·Granted Jan 27, 1976·18 cites·2 claims
- 0264US4032084AHelicopter type aircraft with ground effect structureBLACK JOHN O·Filed 1976·Granted Jun 28, 1977·27 cites·7 claims
- 0344US4253135ALampBLACK JOHN O·Filed 1979·Granted Feb 24, 1981·8 cites·2 claims
- 0441US4187999AVertical ascending and descending airplaneBLACK JOHN O·Filed 1978·Granted Feb 12, 1980·6 cites·4 claims
- 0537USD265133SLampBLACK JOHN O·Filed 1979·Granted Jun 22, 1982·1 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →