Individual holder
HEIL JOHN S
US·4 granted patents·26 citations·filing 1986–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0140US4671314AFlow line sampler valve apparatusHEIL JOHN S·Filed 1986·Granted Jun 9, 1987·9 cites·12 claims
- 0237US5170991AValve seal apparatusHEIL JOHN S·Filed 1991·Granted Dec 15, 1992·9 cites·19 claims
- 0330US5338004AValve seal apparatusHEIL JOHN S·Filed 1992·Granted Aug 16, 1994·5 cites·10 claims
- 0427US5052658AValve seal apparatusHEIL JOHN S·Filed 1990·Granted Oct 1, 1991·3 cites·13 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →