Individual holder
JACKSON FRANCIS W
7 granted patents·35 citations·filing 1981–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
7 records- 0146US4580532AMultiple piston expansion chamber engineJACKSON FRANCIS W·Filed 1984·Granted Apr 8, 1986·10 cites·2 claims
- 0236US4489681AMultiple piston expansion chamber engineJACKSON FRANCIS W·Filed 1981·Granted Dec 25, 1984·6 cites·1 claims
- 0332US5271315APressure balanced piston ringsJACKSON FRANCIS W·Filed 1992·Granted Dec 21, 1993·7 cites·6 claims
- 0432US4741296AMultiple piston expansion chamber engineJACKSON FRANCIS W·Filed 1986·Granted May 3, 1988·5 cites·2 claims
- 0530US4860701AMultiple piston expansion chamber engineJACKSON FRANCIS W·Filed 1988·Granted Aug 29, 1989·3 cites·10 claims
- 0630US4570580AMultiple piston expansion chamber engineJACKSON FRANCIS W·Filed 1984·Granted Feb 18, 1986·3 cites·6 claims
- 0727US4715328AMultiple piston expansion chamber engineJACKSON FRANCIS W·Filed 1985·Granted Dec 29, 1987·1 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →