Yellowstone Environmental Science, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6298327 Expert support system for authoring invention disclosuresExpiredMar 08, 95Oct 02, 01[G06F]
5942117 Anaerobic biodegradation of unsaturated, saturated, aromatic and halogenated hydrocarbonsExpiredOct 19, 95Aug 24, 99[C02F]
5922204 Method and apparatus for bioremediation of mixed hazardous wastesExpiredAug 04, 92Jul 13, 99[C02F]
5914441 Biocatalyzed anaerobic oxidation of metal sulfides for recovery of metal valuesExpiredJun 12, 96Jun 22, 99[C22B]
5811255 Apparatus and method for anaerobic respirometryExpiredSep 20, 95Sep 22, 98[C12Q, C12M]
5672194 Method and apparatus for extracting precious metals from their ores and the product thereofExpiredMay 08, 95Sep 30, 97[C22B]
5608171 Distributed, unattended wastewater monitoring systemExpiredDec 21, 94Mar 04, 97[G01F]
5601763 In situ pipeline rehabilitation systemExpiredNov 29, 94Feb 11, 97[B29C]
5485518 Electronic media program recognition and choiceExpiredSep 30, 93Jan 16, 96[H04N]
5449397 Biocatalyzed leaching of precious metal valuesExpiredJun 24, 94Sep 12, 95[C22B]
5423226 Flow measurement systemExpiredDec 09, 93Jun 13, 95[G01F]
5406828 Method and apparatus for pressure and level transmission and sensingExpiredNov 16, 93Apr 18, 95[G01F]
5351845 Cognitive skill based child-resistant and tamper-evident closureExpiredJan 31, 92Oct 04, 94[B65D]
5342769 Microbial dehalogenation using methanosarcinaExpiredSep 04, 92Aug 30, 94[C12P, C02F]
5317796 Technique for rendering packaging child resistantExpiredNov 15, 89Jun 07, 94[B23P, B65D]
5205023 Child-resistant buckle and buckle guard combinationExpiredOct 04, 90Apr 27, 93[A44B]
5184376 Child-resistant safety belt buckleExpiredApr 18, 90Feb 09, 93[A44B]
5104595 Process and apparatus for in situ rehabilitation of pipelinesExpiredJul 13, 90Apr 14, 92[B29C]
5085578 Child-resistant lighter with gas and spark controlExpiredOct 09, 90Feb 04, 92[F23D]
5076927 Biocatalyzed partial demineralization of acidic metal sulfate solutionsExpiredMar 09, 88Dec 31, 91[C02F]

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