Assignee
AMERICAN WATER SERVICES
US·31 granted patents·543 citations·filing 1975–1996
Top patents by PatentIndex Score
31 records- 0188US4543996AFluid flow diverter valve with improved flow-through constructionAMERICAN WATER SERVICES·Filed 1984·Granted Oct 1, 1985·39 cites·12 claims
- 0286US3973592AFluid flow diverterAMERICAN WATER SERVICES·Filed 1975·Granted Aug 10, 1976·54 cites·17 claims
- 0384US4124065AApparatus for cleaning heat exchanger tubesAMERICAN WATER SERVICES·Filed 1976·Granted Nov 7, 1978·52 cites·29 claims
- 0481US4445540ASleeve-type fluid flow diverterAMERICAN WATER SERVICES·Filed 1981·Granted May 1, 1984·37 cites·24 claims
- 0579US4520847AFluid flow diverter disc valveAMERICAN WATER SERVICES·Filed 1983·Granted Jun 4, 1985·33 cites·7 claims
- 0679US4506703AFour-way fluid flow diverter valveAMERICAN WATER SERVICES·Filed 1983·Granted Mar 26, 1985·30 cites·7 claims
- 0771US4269264ACleaning of heat exchanger tubingAMERICAN WATER SERVICES·Filed 1978·Granted May 26, 1981·25 cites·4 claims
- 0869US5010950ABall strainer for circulating ball cleaning systemAMERICAN WATER SERVICES·Filed 1989·Granted Apr 30, 1991·25 cites·6 claims
- 0965US4904126ATruck mounted vacuum loading apparatusAMERICAN WATER SERVICES·Filed 1989·Granted Feb 27, 1990·28 cites·13 claims
- 1063US4489776AHeat exchanger with tube cleaning element capturing cage interconnectionAMERICAN WATER SERVICES·Filed 1983·Granted Dec 25, 1984·17 cites·8 claims
- 1162US4653537AFluid flow diverter valve with improved chamber arrangementAMERICAN WATER SERVICES·Filed 1986·Granted Mar 31, 1987·22 cites·6 claims
- 1259US4382465ACleaning arrangement for heat exchange tubesAMERICAN WATER SERVICES·Filed 1981·Granted May 10, 1983·15 cites·6 claims
- 1355US4984629ABall collector and filling apparatus for circulating ball cleaning systemAMERICAN WATER SERVICES·Filed 1989·Granted Jan 15, 1991·20 cites·21 claims
- 1451US4739796AFluid flow diverterAMERICAN WATER SERVICES·Filed 1987·Granted Apr 26, 1988·15 cites·16 claims
- 1551US4398592ABasket retainer for heat exchanger tube cleaning elementAMERICAN WATER SERVICES·Filed 1982·Granted Aug 16, 1983·11 cites·11 claims
- 1651US4353414AHeat exchanger tube cleaningAMERICAN WATER SERVICES·Filed 1980·Granted Oct 12, 1982·13 cites·9 claims
- 1750US4643248AProtection of heat exchanger tube endsAMERICAN WATER SERVICES·Filed 1986·Granted Feb 17, 1987·15 cites·7 claims
- 1849US5680665ABall conditioning, sorting and collecting apparatus for circulating ball cleaning systemAMERICAN WATER SERVICES·Filed 1996·Granted Oct 28, 1997·14 cites·20 claims
- 1945US4595050AHeat exchanger tube cleaning element capturing device with retainer rotation preventionAMERICAN WATER SERVICES·Filed 1984·Granted Jun 17, 1986·8 cites·5 claims
- 2045US4592417AHeat exchanger tube cleaning element capturing device with offset stopAMERICAN WATER SERVICES·Filed 1984·Granted Jun 3, 1986·8 cites·7 claims
- 2142US4627486ACorrection for tube sheet misalignment in heat exchangers having tube cleaning arrangements thereinAMERICAN WATER SERVICES·Filed 1985·Granted Dec 9, 1986·8 cites·9 claims
- 2242US4553396ABrine concentratorAMERICAN WATER SERVICES·Filed 1984·Granted Nov 19, 1985·18 cites·23 claims
- 2341US4418747AShuttle cleaning of heat exchanger tubesAMERICAN WATER SERVICES·Filed 1982·Granted Dec 6, 1983·7 cites·9 claims
- 2441US4402360ARetainer for heat exchanger cleaning elementsAMERICAN WATER SERVICES·Filed 1981·Granted Sep 6, 1983·7 cites·11 claims
- 2540USD292309SEnd clip for a heat exchanger tube cleaning shuttle brush retaining basketAMERICAN WATER SERVICES·Filed 1985·Granted Oct 13, 1987·3 cites·1 claims
- 2638US4508164ADash pot basket for heat exchanger tube cleaning elementAMERICAN WATER SERVICES·Filed 1983·Granted Apr 2, 1985·5 cites·4 claims
- 2737US4552207ABasket retainer for heat exchanger tube cleaning elementAMERICAN WATER SERVICES·Filed 1983·Granted Nov 12, 1985·5 cites·9 claims
- 2834US4544026AHeat exchanger tube cleaning element capturing device with hinged retainerAMERICAN WATER SERVICES·Filed 1984·Granted Oct 1, 1985·3 cites·4 claims
- 2932US4595049ABasket retainer for heat exchanger tube cleaning elementAMERICAN WATER SERVICES·Filed 1985·Granted Jun 17, 1986·3 cites·9 claims
- 3031US4415022AMounting for heat exchanger tube cleaner capturing devicesAMERICAN WATER SERVICES·Filed 1982·Granted Nov 15, 1983·2 cites·4 claims
- 3130US4607686ABasket retainer for heat exchanger tube cleaning elementAMERICAN WATER SERVICES·Filed 1984·Granted Aug 26, 1986·1 cites·13 claims
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