Assignee
ISHIGAKI MECH IND
JP·40 granted patents·2 pending applications·774 citations·filing 1974–2023
Top patents by PatentIndex Score
42 records- 0192US6634508B1Screw pressISHIGAKI MECH IND·Filed 2000·Granted Oct 21, 2003·66 cites·11 claims
- 0290US10974982B2Recovery device and recovery method for recovering specific material from sludgeISHIGAKI MECH IND·Filed 2016·Granted Apr 13, 2021·5 cites·1 claims
- 0390US5357855AScrew press for dewatering a slurryISHIGAKI MECH IND·Filed 1991·Granted Oct 25, 1994·39 cites·9 claims
- 0488US9975798B2Sludge dehydration system and sludge dehydration methodISHIGAKI MECH IND·Filed 2016·Granted May 22, 2018·4 cites·10 claims
- 0585US4045344AApparatus for treating waste waterISHIGAKI MECH IND·Filed 1974·Granted Aug 30, 1977·58 cites·14 claims
- 0684US6615710B1Screw press apparatusISHIGAKI MECH IND·Filed 1999·Granted Sep 9, 2003·70 cites·23 claims
- 0784US4200532AWastewater treatment apparatusISHIGAKI MECH IND·Filed 1979·Granted Apr 29, 1980·54 cites·9 claims
- 0881US4198301AFilter apparatus using floating filter mediumISHIGAKI MECH IND·Filed 1978·Granted Apr 15, 1980·36 cites·10 claims
- 0980US7906029B2Sludge thickening methodISHIGAKI MECH IND·Filed 2010·Granted Mar 15, 2011·4 cites·7 claims
- 1079US11401188B2Sludge dehydration system and sludge dehydration methodISHIGAKI MECH IND·Filed 2018·Granted Aug 2, 2022·1 cites·19 claims
- 1179US4137171AProcess for treating waste water and an apparatus thereforISHIGAKI MECH IND·Filed 1974·Granted Jan 30, 1979·49 cites·1 claims
- 1278US6283805B1Water jet propulsion type outboard motorISHIGAKI MECH IND·Filed 1998·Granted Sep 4, 2001·23 cites·2 claims
- 1377US9718004B2Filter medium layer and filter device provided with sameISHIGAKI MECH IND·Filed 2012·Granted Aug 1, 2017·7 cites·19 claims
- 1476US5989083AWater jet propulsion device for vesselsISHIGAKI MECH IND·Filed 1996·Granted Nov 23, 1999·23 cites·8 claims
- 1573US4032450AFilter pressISHIGAKI MECH IND·Filed 1975·Granted Jun 28, 1977·27 cites·2 claims
- 1671US6461507B1Continuous squeeze-dewatering deviceISHIGAKI MECH IND·Filed 1999·Granted Oct 8, 2002·45 cites·42 claims
- 1770US7828961B2Sludge thickening deviceISHIGAKI MECH IND·Filed 2005·Granted Nov 9, 2010·4 cites·13 claims
- 1869US6923694B2Waterjet propelling device of boatISHIGAKI MECH IND·Filed 2002·Granted Aug 2, 2005·11 cites·6 claims
- 1969US4919775AMethod and apparatus for electrolytic treatment of sludgeISHIGAKI MECH IND·Filed 1988·Granted Apr 24, 1990·31 cites·4 claims
- 2067US5487644APump having a single or a plurality of helical bladesISHIGAKI MECH IND·Filed 1994·Granted Jan 30, 1996·34 cites·3 claims
- 2166US4900436AApparatus for cake removal in a filter pressISHIGAKI MECH IND·Filed 1988·Granted Feb 13, 1990·27 cites·5 claims
- 2262US2024060887A1Filter-press filter-cloth damage detection deviceISHIGAKI MECH IND·Filed 2023·Application pending·0 cites
- 2361US7021890B2Turbo pumpISHIGAKI MECH IND·Filed 2002·Granted Apr 4, 2006·11 cites·15 claims
- 2460US5167801AFilter press with cake removing deviceISHIGAKI MECH IND·Filed 1991·Granted Dec 1, 1992·27 cites·7 claims
- 2559US6645018B2Boat propulsion deviceISHIGAKI MECH IND·Filed 2001·Granted Nov 11, 2003·7 cites·8 claims
- 2658US5846415AApparatus for regenerating filter clothes of filter pressISHIGAKI MECH IND·Filed 1997·Granted Dec 8, 1998·31 cites·6 claims
- 2757US12521652B2Filter cloth cleaning method of filter pressISHIGAKI MECH IND·Filed 2019·Granted Jan 13, 2026·0 cites·8 claims
- 2857US12083452B2Outer cylinder screen washing apparatus of screw pressISHIGAKI MECH IND·Filed 2022·Granted Sep 10, 2024·0 cites·6 claims
- 2955US6183319B1Closure preventive device for water jet propulsion type outboard motorISHIGAKI MECH IND·Filed 1998·Granted Feb 6, 2001·10 cites·14 claims
- 3054US6821167B2Outboard motorISHIGAKI MECH IND·Filed 2002·Granted Nov 23, 2004·8 cites·20 claims
- 3151US6102757AWater jet propulsion device for marine vesselISHIGAKI MECH IND·Filed 1997·Granted Aug 15, 2000·9 cites·18 claims
- 3245US6786167B2Propulsion system for boatsISHIGAKI MECH IND·Filed 2001·Granted Sep 7, 2004·2 cites·11 claims
- 3345US6193570B1Water jet propulsion system for watercraftISHIGAKI MECH IND·Filed 1998·Granted Feb 27, 2001·7 cites·4 claims
- 3444US4511469AFilter press of movable twin head typeISHIGAKI MECH IND·Filed 1982·Granted Apr 16, 1985·10 cites·10 claims
- 3544US4178251AApparatus for dehydration of sludgeISHIGAKI MECH IND·Filed 1978·Granted Dec 11, 1979·6 cites·13 claims
- 3639US6086436AWater jet propulsion device for marine vesselISHIGAKI MECH IND·Filed 1997·Granted Jul 11, 2000·5 cites·16 claims
- 3739USD408779SMotorboatISHIGAKI MECH IND·Filed 1998·Granted Apr 27, 1999·3 cites·1 claims
- 3837US2013043175A1Device for attaching undiluted-liquid supply plate to filter cloth of filter press, and filter press equipped with sameISHIGAKI MECH IND·Filed 2011·Application pending·0 cites
- 3934US10252482B2Belt pressISHIGAKI MECH IND·Filed 2014·Granted Apr 9, 2019·0 cites·1 claims
- 4034US5741418AFilter cloth suspending apparatus in filter pressISHIGAKI MECH IND·Filed 1995·Granted Apr 21, 1998·7 cites·4 claims
- 4133US5843310AFilter unit for filter pressISHIGAKI MECH IND·Filed 1997·Granted Dec 1, 1998·9 cites·4 claims
- 4223US4512889AFilter pressISHIGAKI MECH IND·Filed 1983·Granted Apr 23, 1985·4 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →