Sulzer-Escher Wyss Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5298122 Measuring device and method for measuring the crosswise profile of a paper webExpiredJan 29, 91Mar 29, 94[D21F]
5076891 Heated roller and method for its operationExpiredAug 15, 90Dec 31, 91[F28F, D21G]
4970767 Heatable controlled deflection rollExpiredMay 01, 89Nov 20, 90[B21B]
4967653 Calender having displaceable bearing partsExpiredDec 12, 88Nov 06, 90[B30B]
4704879 Treatment machine with rotatable treatment drumExpiredFeb 20, 85Nov 10, 87[D06F]
4681029 Apparatus for treating soybeansExpiredOct 28, 85Jul 21, 87[A23L]
4611479 Method and apparatus for rolling metal foilsExpiredNov 26, 84Sep 16, 86[B21B]
4583273 Controlled deflection rollExpiredAug 29, 84Apr 22, 86[B21B]
4558986 Control mechanism for the stator vanes of an axial turbine deviceExpiredMay 07, 84Dec 17, 85[F04D]
4552008 Rolling mill for sheet materialExpiredAug 18, 83Nov 12, 85[B21B]
4547197 Treatment of brine elutriateExpiredDec 07, 83Oct 15, 85[B01D]
4545726 TurbineExpiredMay 19, 82Oct 08, 85[F03B]
4530227 Hydrostatic support member, particularly for rolling mills, and method of using the sameExpiredJul 18, 83Jul 23, 85[B21B]
4519899 Purification of oil using a jet pump mixerExpiredNov 22, 83May 28, 85[C10M, B01D]
4517695 Method and apparatus for balancing of out-of-balance forces in centrifuges or combined washing machines-spin driersExpiredOct 18, 82May 21, 85[D06F]
4513464 Method for controlling the acceleration of a centrifuging deviceExpiredNov 22, 83Apr 30, 85[D06F]
4493768 Twin pusher centrifuge including rotatable pusherExpiredAug 29, 83Jan 15, 85[B04B]
4493769 Twin pusher centrifugeExpiredAug 29, 83Jan 15, 85[B04B]
4480452 Rolling millExpiredMar 21, 83Nov 06, 84[B21B]
4427552 Method of automatically controlling a continuously operating pressure filterExpiredJan 27, 83Jan 24, 84[B01D]

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