Individual holder
BERGERON CHARLES W
US·4 granted patents·67 citations·filing 1987–1990
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0180US4836154APoppet valve assembly with aperturesBERGERON CHARLES W·Filed 1987·Granted Jun 6, 1989·35 cites·4 claims
- 0253US5005538AExtended circumference intake poppet valve system for opening and sealing a single valve seatBERGERON CHARLES W·Filed 1990·Granted Apr 9, 1991·17 cites·2 claims
- 0343US4957073AMultiple concentric intake/exhaust valve system for an internal combustion engineBERGERON CHARLES W·Filed 1990·Granted Sep 18, 1990·12 cites·10 claims
- 0429US4907554AMultiple intake poppet valve array for a single portBERGERON CHARLES W·Filed 1989·Granted Mar 13, 1990·3 cites·8 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →