Assignee
VEITSCHER MAGNESITWERKE AG
AT·31 granted patents·414 citations·filing 1974–1993
Top patents by PatentIndex Score
31 records- 0192US4944928AProcess for producing pure magnesium oxideVEITSCHER MAGNESITWERKE AG·Filed 1988·Granted Jul 31, 1990·74 cites·11 claims
- 0284US4540039APrismatic refractory brick for glass melting furnace chambersVEITSCHER MAGNESITWERKE AG·Filed 1983·Granted Sep 10, 1985·17 cites·5 claims
- 0384US4340360AFire brick for a rotary kilnVEITSCHER MAGNESITWERKE AG·Filed 1980·Granted Jul 20, 1982·25 cites·2 claims
- 0484US3980753AIndustrial process of preparing magnesia of high purityVEITSCHER MAGNESITWERKE AG·Filed 1974·Granted Sep 14, 1976·36 cites·12 claims
- 0580US4436144APrismatic brick of refractory materialVEITSCHER MAGNESITWERKE AG·Filed 1982·Granted Mar 13, 1984·29 cites·2 claims
- 0678US4427184ATaphole apparatusVEITSCHER MAGNESITWERKE AG·Filed 1982·Granted Jan 24, 1984·16 cites·2 claims
- 0777US4651810ACheckerwork for upright regeneration chambers of a glass melting furnaceVEITSCHER MAGNESITWERKE AG·Filed 1986·Granted Mar 24, 1987·44 cites·10 claims
- 0872US4100254AIndustrial process of preparing magnesia of high purityVEITSCHER MAGNESITWERKE AG·Filed 1976·Granted Jul 11, 1978·16 cites·10 claims
- 0967US5286285AFinely powdery magnesium hydroxide and a process for preparing thereofVEITSCHER MAGNESITWERKE AG·Filed 1990·Granted Feb 15, 1994·21 cites·22 claims
- 1066US4199108AApparatus for building up and repairing a refractory liningVEITSCHER MAGNESITWERKE AG·Filed 1978·Granted Apr 22, 1980·14 cites·5 claims
- 1163US3989446AMethod and kiln for calcining finely divided materialVEITSCHER MAGNESITWERKE AG·Filed 1975·Granted Nov 2, 1976·16 cites·16 claims
- 1261US4033514AApparatus for building up and repairing a refractory liningVEITSCHER MAGNESITWERKE AG·Filed 1975·Granted Jul 5, 1977·11 cites·8 claims
- 1360US4255399AProcess for the recovery of magnesium oxide of high purityVEITSCHER MAGNESITWERKE AG·Filed 1979·Granted Mar 10, 1981·9 cites·12 claims
- 1456US4023786ARefractory lining for a pig iron containerVEITSCHER MAGNESITWERKE AG·Filed 1976·Granted May 17, 1977·8 cites·3 claims
- 1552US5007366ARefractory gas permeable bubbling plugVEITSCHER MAGNESITWERKE AG·Filed 1989·Granted Apr 16, 1991·8 cites·7 claims
- 1649US4075311AProcess for preparing granulated magnesium hydroxide and magnesia of a large specific surfaceVEITSCHER MAGNESITWERKE AG·Filed 1976·Granted Feb 21, 1978·6 cites·33 claims
- 1743US5328879ABinding and plasticizing agent for preparing carbon-containing, refractory, ceramic materials and material prepared therewithVEITSCHER MAGNESITWERKE AG·Filed 1993·Granted Jul 12, 1994·11 cites·13 claims
- 1841US5106608AMagnesium oxide in fine powder form and its useVEITSCHER MAGNESITWERKE AG·Filed 1989·Granted Apr 21, 1992·5 cites·8 claims
- 1941US4589474ACheckerwork in horizontal chamber of a regeneratively fired furnaceVEITSCHER MAGNESITWERKE AG·Filed 1983·Granted May 20, 1986·7 cites·3 claims
- 2040US4238076AApparatus for building up and repairing the refractory lining of industrial furnaces and hot-running vesselsVEITSCHER MAGNESITWERKE AG·Filed 1979·Granted Dec 9, 1980·5 cites·1 claims
- 2134US4137026ABrickmaking pressVEITSCHER MAGNESITWERKE AG·Filed 1977·Granted Jan 30, 1979·7 cites·5 claims
- 2232US5426078AUse of a finely divided, refractory, oxidic micropowder for preparing ceramic masses and moldingsVEITSCHER MAGNESITWERKE AG·Filed 1993·Granted Jun 20, 1995·3 cites·16 claims
- 2332US5340088AMetallurgical vessel and method of making the refractory lining of such vesselsVEITSCHER MAGNESITWERKE AG·Filed 1993·Granted Aug 23, 1994·4 cites·15 claims
- 2432US4362709AProcess of preparing sinter magnesiaVEITSCHER MAGNESITWERKE AG·Filed 1981·Granted Dec 7, 1982·4 cites·8 claims
- 2529US4075293AControl system for an absorption columnVEITSCHER MAGNESITWERKE AG·Filed 1976·Granted Feb 21, 1978·5 cites·21 claims
- 2626US5333843ADevice for installing and removing gas purging plugs for metallurgical vesselsVEITSCHER MAGNESITWERKE AG·Filed 1991·Granted Aug 2, 1994·2 cites·14 claims
- 2725US5368459ADevice for preparing and feeding a monolithic ceramic mass into a metallurgical melting vesselVEITSCHER MAGNESITWERKE AG·Filed 1993·Granted Nov 29, 1994·1 cites·17 claims
- 2825US4422626AApparatus for repairing a refractory furnace liningVEITSCHER MAGNESITWERKE AG·Filed 1982·Granted Dec 27, 1983·3 cites·10 claims
- 2922US5332201ASystem of sized bricksVEITSCHER MAGNESITWERKE AG·Filed 1993·Granted Jul 26, 1994·3 cites·4 claims
- 3019US4073656AFired refractory brick and process for preparing the sameVEITSCHER MAGNESITWERKE AG·Filed 1976·Granted Feb 14, 1978·2 cites·4 claims
- 3114US4315992ACarbon-containing and uncarbonized sinter magnesia refractoriesVEITSCHER MAGNESITWERKE AG·Filed 1980·Granted Feb 16, 1982·2 cites·5 claims
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