Assignee
HARTLEY SIMON LTD
15 granted patents·330 citations·filing 1975–1991
Top patents by PatentIndex Score
15 records- 0193US5117871AFlap valveHARTLEY SIMON LTD·Filed 1991·Granted Jun 2, 1992·121 cites·6 claims
- 0279US4128267ALifting beamHARTLEY SIMON LTD·Filed 1977·Granted Dec 5, 1978·37 cites·10 claims
- 0379US4101409AElectrolytic flotation apparatusHARTLEY SIMON LTD·Filed 1977·Granted Jul 18, 1978·28 cites·2 claims
- 0476US4060484AFiltersHARTLEY SIMON LTD·Filed 1975·Granted Nov 29, 1977·36 cites·9 claims
- 0562US4115279AApparatus for separation of oil from oil and water mixturesHARTLEY SIMON LTD·Filed 1976·Granted Sep 19, 1978·24 cites·10 claims
- 0659US4151231ARotary surface aeratorsHARTLEY SIMON LTD·Filed 1977·Granted Apr 24, 1979·21 cites·12 claims
- 0749US4354935AApparatus for thickening sludgeHARTLEY SIMON LTD·Filed 1981·Granted Oct 19, 1982·16 cites·6 claims
- 0846US4075851APenstocksHARTLEY SIMON LTD·Filed 1976·Granted Feb 28, 1978·13 cites·13 claims
- 0941US5059322AApparatus for dewatering sludgeHARTLEY SIMON LTD·Filed 1990·Granted Oct 22, 1991·10 cites·4 claims
- 1040US4404099ASludge thickeningHARTLEY SIMON LTD·Filed 1982·Granted Sep 13, 1983·8 cites·7 claims
- 1135US5103864ALiquid distribution systemsHARTLEY SIMON LTD·Filed 1990·Granted Apr 14, 1992·7 cites·10 claims
- 1230US5129195ASluice gate or penstock doorHARTLEY SIMON LTD·Filed 1991·Granted Jul 14, 1992·3 cites·7 claims
- 1328US5135651ASludge dewatering systemHARTLEY SIMON LTD·Filed 1991·Granted Aug 4, 1992·4 cites·7 claims
- 1428US5129147ASluice gate or penstock doorHARTLEY SIMON LTD·Filed 1990·Granted Jul 14, 1992·1 cites·12 claims
- 1520US4738432AFluid flow control valvesHARTLEY SIMON LTD·Filed 1987·Granted Apr 19, 1988·1 cites·10 claims
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