Nukem GmbH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5500162 Process and device for producing microspheresExpiredMay 13, 94Mar 19, 96[B29B]
5489422 Process for coating carbon fiber reinforced carbonExpiredSep 09, 94Feb 06, 96[D01F]
5474411 Multistory structure for chemical plantsExpiredMay 21, 93Dec 12, 95[E04B]
5279160 Array for non-destructive material testing of cylindrical workpieces by means of electrodynamic ultrasonic measurementExpiredAug 06, 91Jan 18, 94[G01N]
5165280 Device for testing of oblong objects by means of ultrasonic wavesExpiredOct 30, 90Nov 24, 92[G01N]
5140860 Electrodynamic transducer headExpiredJan 23, 91Aug 25, 92[G01N]
5109918 Device for the thermal treatment or organic and inorganic substancesExpiredJun 08, 90May 05, 92[F28D]
5053355 Method and means for producing a layered system of semiconductorsExpiredJan 09, 90Oct 01, 91[H01L]
4976569 Method of introducing ecologically harmful waste into subterranean cavitiesExpiredMay 18, 88Dec 11, 90[B09B]
4960141 Device for cleaning in particular of disc-shaped oxide substratesExpiredSep 27, 88Oct 02, 90[B08B]
4937065 Process for the chemical-thermal degradation of haolgenated hydrocarbonsExpiredDec 06, 88Jun 26, 90[F23G, C01B, F23B, C01F]
4929281 Method for producing thin-film solar cells in a series-connected arrayExpiredMar 31, 88May 29, 90[H01L]
4924181 Device having electromagnet for providing a magnetic field inclined with respect to the transportation direction of a ferromagnetic body for non-destructive, magnetic testing of the bodyExpiredJun 28, 88May 08, 90[G01N, G01R]
4919867 Method for sintering high temperature ceramicsExpiredNov 09, 87Apr 24, 90[C04B]
4915978 Method and device for forming a layer by plasma-chemical processExpiredDec 08, 88Apr 10, 90[C23C, B05D]
4900369 Solar cellExpiredDec 14, 88Feb 13, 90[H01L]
4891325 Method for re-using silicon base material of a metal insulator semiconductor (mis) inversion-layer solar cellExpiredJul 14, 88Jan 02, 90[B01J]
4886555 Solar cellExpiredMar 31, 88Dec 12, 89[H01L]
4876727 Method and apparatus for detecting faults in an objectExpiredJan 30, 87Oct 24, 89[G06K]
4869755 Encapsulation of a photovoltaic elementExpiredJul 14, 88Sep 26, 89[H01L]

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