Assignee
RICHAL CORP
US·4 granted patents·63 citations·filing 1986–2004
Top patents by PatentIndex Score
4 records- 0165US7131330B2Submersible pump controllerRICHAL CORP·Filed 2004·Granted Nov 7, 2006·16 cites·22 claims
- 0262US6203281B1Submersible pump controller for differentiating fluidsRICHAL CORP·Filed 1999·Granted Mar 20, 2001·24 cites·19 claims
- 0355US4752188AOil Detection method and apparatus for a pump submerged in a transformer vaultRICHAL CORP·Filed 1987·Granted Jun 21, 1988·17 cites·5 claims
- 0433US4715785AOil detection apparatus for submersible pumpsRICHAL CORP·Filed 1986·Granted Dec 29, 1987·6 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →