ONDEO NALCO ENERGY SERVICES, L.P.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0185,281 Polyester color filmAbandonedMar 17, 03Sep 23, 04[B32B]
2002/0113,603 Method and apparatus using variable capacitance compensation for thickness shear mode sensorsAbandonedDec 28, 00Aug 22, 02[G01R]
2001/0007,351 Use of delayed release breakers in gelled hydrocarbonsAbandonedJan 05, 01Jul 12, 01[G21K, G01N]
5879534 Non-enolizable oxygenates as anti foulants in ethylene dichloride manufactureExpiredJun 22, 98Mar 09, 99[C10G]
5770041 Non-enolizable oxygenates as antifoulantsExpiredFeb 21, 97Jun 23, 98[C10G]
5710329 Antifoulant for acrylic acid purificationExpiredOct 23, 96Jan 20, 98[C07C]
5674377 Method of treating sour gas and liquid hydrocarbonExpiredJun 19, 95Oct 07, 97[C10G]
5660717 Abatement of hydrolyzable cations in crude oilExpiredMar 27, 95Aug 26, 97[C10G]
5660874 Method of protecting steel water handling facilities from corrosionExpiredFeb 14, 96Aug 26, 97[B05D]
5649596 Use of breaker chemicals in gelled hydrocarbonsExpiredFeb 27, 96Jul 22, 97[E21B]
5545782 Method for inhibiting premature polymerization of vinyl aromatic monomersExpiredMay 17, 95Aug 13, 96[C07C]
5468367 Antifoulant for inorganic foulingExpiredFeb 16, 94Nov 21, 95[C10G]
5420194 .alpha.olefin/maelic anhydride copolymers as antifoulants in ethylene process water stripper systemsExpiredFeb 14, 94May 30, 95[C08L]
5415785 Method for removing a cyanide contaminant from refinery waste water streamsExpiredOct 18, 93May 16, 95[C02F]
5387393 Prevention of cracking and blistering of refinery steels by cyanide scavenging in petroleum refining processesExpiredSep 08, 93Feb 07, 95[C23F]
5360531 Phosphoric triamide coking inhibitorsExpiredJun 02, 93Nov 01, 94[C10G]
5340210 Apparatus for blending chemicals with a reversible multi-speed pumpExpiredFeb 25, 92Aug 23, 94[B01F]
5226186 Waterbed mattress with draining systemExpiredJul 06, 92Jul 13, 93[A47C]
5192336 Anti-foam diesel fuelExpiredDec 04, 91Mar 09, 93[C10L]
5028239 Fuel dewatering additivesExpiredMay 12, 89Jul 02, 91[C10L]

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