Waagner-Biro A.G.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5237931 Transportation system for city transportation with traction cable and railroad system having a central routing control and electronic calling systems in the stationsExpiredOct 21, 92Aug 24, 93[B61B]
5107771 Connection of several cableway carsExpiredMar 05, 91Apr 28, 92[B61B]
5096680 Method for waste gas treatmentExpiredJul 29, 88Mar 17, 92[C01B, B01J]
5033392 Apparatus for loading and unloading passengers from watercraftExpiredMar 21, 90Jul 23, 91[A63G]
4968622 Procedure for microbiologica transformation of sulphur containing harmful components in exhaust gasesExpiredOct 17, 88Nov 06, 90[B01D]
4880313 Method and nozzle for mixing mediums of different viscosityExpiredNov 24, 87Nov 14, 89[S14E]
4859438 Method for separation of impurities from flowing gasExpiredJun 29, 88Aug 22, 89[C01B, B01J]
4839147 Method of purifying combustion product gases contaminated with dust and noxious gasesExpiredFeb 25, 88Jun 13, 89[C01B, B01J]
4834837 Method for delignification of cellulose with oxygenExpiredJul 22, 87May 30, 89[D21C]
4767605 Method for separation of acid pollution gasExpiredDec 02, 85Aug 30, 88[C01B, C01P, B01J]
4758248 Gasification of fine-grained or sludgy carbonaceous materialExpiredNov 18, 86Jul 19, 88[C10J]
4693729 Method for gasifying solid fuelsExpiredFeb 03, 86Sep 15, 87[C10J]
4684374 Method for the continuous gasification of solid fuelExpiredNov 18, 86Aug 04, 87[C10J]
4629565 Process for the biological treatment of sewageExpiredJan 02, 85Dec 16, 86[C02F]
4485975 Anchorage of the liner plates in tumbling mills by means of wedge-shaped elementsExpiredApr 21, 82Dec 04, 84[B02C]
4480797 Installation for treatment of waste metal and liquid drossExpiredAug 20, 82Nov 06, 84[B02C]
4443955 Method and installation for cooling hot bulk materialExpiredMay 26, 81Apr 24, 84[F26B]
4441261 Method and apparatus for cooling hot bulk materialExpiredJun 01, 81Apr 10, 84[F26B]
4394978 Method for treatment of waste metal and liquid drossExpiredFeb 06, 81Jul 26, 83[B02C]
4367598 Thermal treatment apparatus for bulk materialExpiredJun 20, 80Jan 11, 83[F26B]

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