Assignee
CULLIGAN INT CO
US·51 granted patents·6 pending applications·1,338 citations·filing 1979–2025
Top patents by PatentIndex Score
57 records- 0194US4606943AMethod for preparation of semipermeable composite membraneCULLIGAN INT CO·Filed 1984·Granted Aug 19, 1986·91 cites·14 claims
- 0292US6740235B2Swivelling filter head assemblyCULLIGAN INT CO·Filed 2002·Granted May 25, 2004·53 cites·19 claims
- 0389US11365814B2Control valve for fluid treatment apparatusCULLIGAN INT CO·Filed 2021·Granted Jun 21, 2022·2 cites·16 claims
- 0489US10675573B2Remote control faucet filter systemCULLIGAN INT CO·Filed 2015·Granted Jun 9, 2020·13 cites·20 claims
- 0586US4769135AAutomatic metering systemCULLIGAN INT CO·Filed 1987·Granted Sep 6, 1988·58 cites·23 claims
- 0685US6830683B2Filter cartridge assembly with brine seal and retaining ringCULLIGAN INT CO·Filed 2002·Granted Dec 14, 2004·72 cites·23 claims
- 0785US5254257AReclaiming of spent brineCULLIGAN INT CO·Filed 1993·Granted Oct 19, 1993·74 cites·18 claims
- 0884US5127427ADrinking water faucetCULLIGAN INT CO·Filed 1991·Granted Jul 7, 1992·55 cites·11 claims
- 0982US8356628B2Electronic bypass system for a fluid treatment systemCULLIGAN INT CO·Filed 2008·Granted Jan 22, 2013·14 cites·17 claims
- 1080US5585003ATreatment of dialysis feedwater using ozoneCULLIGAN INT CO·Filed 1995·Granted Dec 17, 1996·58 cites·6 claims
- 1180US4536845ASelf-programmable controller for water conditioner rechargingCULLIGAN INT CO·Filed 1983·Granted Aug 20, 1985·31 cites·19 claims
- 1280US4299698ACircuit and apparatus for controlling a water softenerCULLIGAN INT CO·Filed 1980·Granted Nov 10, 1981·37 cites·5 claims
- 1379USD327731SFaucetCULLIGAN INT CO·Filed 1990·Granted Jul 7, 1992·21 cites·1 claims
- 1479US4257887ACircuit and apparatus for controlling a water softenerCULLIGAN INT CO·Filed 1979·Granted Mar 24, 1981·27 cites·6 claims
- 1578US7338595B2Flow-through tank for water treatmentCULLIGAN INT CO·Filed 2004·Granted Mar 4, 2008·25 cites·10 claims
- 1677US10612670B2Control valve for fluid treatment apparatusCULLIGAN INT CO·Filed 2016·Granted Apr 7, 2020·2 cites·10 claims
- 1777US7556738B2Method for determining the duration of a brine/slow rinse cycle for a water conditionerCULLIGAN INT CO·Filed 2005·Granted Jul 7, 2009·8 cites·10 claims
- 1877US4668402ASystem for treating fluidsCULLIGAN INT CO·Filed 1984·Granted May 26, 1987·28 cites·27 claims
- 1976US10767770B2Control valve assembly for fluid treatment apparatusCULLIGAN INT CO·Filed 2018·Granted Sep 8, 2020·2 cites·20 claims
- 2076US9616388B2Reverse osmosis system with an automated modulated bypassCULLIGAN INT CO·Filed 2013·Granted Apr 11, 2017·3 cites·16 claims
- 2176US6790362B2Efficiency mode for water softenerCULLIGAN INT CO·Filed 2002·Granted Sep 14, 2004·28 cites·20 claims
- 2276US5073255AWater treatment apparatusCULLIGAN INT CO·Filed 1989·Granted Dec 17, 1991·44 cites·24 claims
- 2375US4537329ATank lining systemCULLIGAN INT CO·Filed 1984·Granted Aug 27, 1985·33 cites·6 claims
- 2474US5160608AHigh efficiency water treatment systemCULLIGAN INT CO·Filed 1991·Granted Nov 3, 1992·38 cites·15 claims
- 2574US4980056AFaucet-mounted microbial filterCULLIGAN INT CO·Filed 1989·Granted Dec 25, 1990·34 cites·27 claims
- 2672US5239285ALow salt level sensorCULLIGAN INT CO·Filed 1990·Granted Aug 24, 1993·31 cites·4 claims
- 2771US4678565APurified water storage system with accumulator tank and diaphragm responsive valvesCULLIGAN INT CO·Filed 1986·Granted Jul 7, 1987·33 cites·8 claims
- 2870US5751598AWater softening apparatus with microprocessor controlCULLIGAN INT CO·Filed 1996·Granted May 12, 1998·41 cites·5 claims
- 2970US5273070AWater treatment apparatusCULLIGAN INT CO·Filed 1992·Granted Dec 28, 1993·33 cites·7 claims
- 3070US4900450ARemoving residual alkali metal ions from demineralized waterCULLIGAN INT CO·Filed 1988·Granted Feb 13, 1990·28 cites·8 claims
- 3169US5290443AFaucet with microbial filterCULLIGAN INT CO·Filed 1991·Granted Mar 1, 1994·32 cites·24 claims
- 3268US11655903B2Control valve assembly for fluid treatment apparatusCULLIGAN INT CO·Filed 2020·Granted May 23, 2023·0 cites·6 claims
- 3368US5045198AFaucet-mounted microbial filterCULLIGAN INT CO·Filed 1990·Granted Sep 3, 1991·31 cites·19 claims
- 3467USD1004050SWater treatment system housingCULLIGAN INT CO·Filed 2020·Granted Nov 7, 2023·6 cites·1 claims
- 3567US5066393ASlotted flow collector/distributor for water treatment tank with one-way valvesCULLIGAN INT CO·Filed 1990·Granted Nov 19, 1991·38 cites·30 claims
- 3666US5699272AWater softening system with self adjusting rinse cycleCULLIGAN INT CO·Filed 1996·Granted Dec 16, 1997·33 cites·15 claims
- 3765US12385572B2Whole home water management systemCULLIGAN INT CO·Filed 2022·Granted Aug 12, 2025·0 cites·14 claims
- 3865US4534867ASystem for removing iron and/or other chemically reducing substances from potable waterCULLIGAN INT CO·Filed 1984·Granted Aug 13, 1985·31 cites·7 claims
- 3965US2026027496A1Water filtration assemblyCULLIGAN INT CO·Filed 2024·Application pending·0 cites
- 4064US5863438AProcesses for deionization and demineralization of fluidsCULLIGAN INT CO·Filed 1997·Granted Jan 26, 1999·23 cites·11 claims
- 4164US2024025773A1Modular pump for residential reverse osmosis systemCULLIGAN INT CO·Filed 2023·Application pending·0 cites
- 4263US12061108B2Water softener salt monitoring systemCULLIGAN INT CO·Filed 2021·Granted Aug 13, 2024·0 cites·21 claims
- 4361US2026035265A1Drinking water pitcher and dispenser with interchangeable cartridgesCULLIGAN INT CO·Filed 2025·Application pending·0 cites
- 4460US11022222B2Control valve for fluid treatment apparatusCULLIGAN INT CO·Filed 2019·Granted Jun 1, 2021·0 cites·13 claims
- 4559US4747945ALightweight media depth filterCULLIGAN INT CO·Filed 1987·Granted May 31, 1988·29 cites·18 claims
- 4656US5345666AMethod of sealing a tank having a flexible sheet liner thereinCULLIGAN INT CO·Filed 1993·Granted Sep 13, 1994·28 cites·3 claims
- 4754US2021379513A1Water filter cartridge and head having keyed engagementCULLIGAN INT CO·Filed 2021·Application pending·0 cites
- 4853US10550012B2Softener eductor with embedded check valveCULLIGAN INT CO·Filed 2019·Granted Feb 4, 2020·0 cites·15 claims
- 4951US2024068584A1Comprehensive water protection deviceCULLIGAN INT CO·Filed 2023·Application pending·0 cites
- 5051US2021236991A1Reverse osmosis drinking water system with dedicated powered faucetCULLIGAN INT CO·Filed 2021·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
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