Assignee
LEYBOLD DURFERRIT GMBH
DE·20 granted patents·220 citations·filing 1991–1995
Top patents by PatentIndex Score
20 records- 0186US6085827AMethod for the directed solidification of molten metal and a casting apparatus for the practice thereofLEYBOLD DURFERRIT GMBH·Filed 1993·Granted Jul 11, 2000·22 cites·14 claims
- 0284US5479438AApparatus for fusing a solid layer of electrically conductive materialLEYBOLD DURFERRIT GMBH·Filed 1994·Granted Dec 26, 1995·24 cites·2 claims
- 0363US5503215APrecision casting system with lockLEYBOLD DURFERRIT GMBH·Filed 1995·Granted Apr 2, 1996·11 cites·13 claims
- 0460US5505008AMethod for recycling materials containing plastic, rubber or lacquerLEYBOLD DURFERRIT GMBH·Filed 1994·Granted Apr 9, 1996·15 cites·9 claims
- 0560US5372655AMethod for the treatment of alloy steels and refractory metalsLEYBOLD DURFERRIT GMBH·Filed 1992·Granted Dec 13, 1994·22 cites·7 claims
- 0655US5271033AInduction furnace for melting and casting substances in a nonreactive atmosphereLEYBOLD DURFERRIT GMBH·Filed 1992·Granted Dec 14, 1993·18 cites·10 claims
- 0754US5343492AClosed induction furnace for the melting and casting of substancesLEYBOLD DURFERRIT GMBH·Filed 1993·Granted Aug 30, 1994·18 cites·10 claims
- 0852US5445789AMethod and apparatus for degreasing and compacting electrically conductive materialLEYBOLD DURFERRIT GMBH·Filed 1994·Granted Aug 29, 1995·8 cites·16 claims
- 0946US5383980AProcess for hardening workpieces in a pulsed plasma dischargeLEYBOLD DURFERRIT GMBH·Filed 1993·Granted Jan 24, 1995·15 cites·12 claims
- 1043US5416793AInduction melting apparatus sealed against the atmosphereLEYBOLD DURFERRIT GMBH·Filed 1993·Granted May 16, 1995·12 cites·8 claims
- 1142US5294096APower supply coil for the ceramic-free outlet of a melting potLEYBOLD DURFERRIT GMBH·Filed 1992·Granted Mar 15, 1994·9 cites·6 claims
- 1241US5280847ATeeming spoutLEYBOLD DURFERRIT GMBH·Filed 1993·Granted Jan 25, 1994·5 cites·9 claims
- 1341US5260966ARemelting arc furnace with movable electrodeLEYBOLD DURFERRIT GMBH·Filed 1992·Granted Nov 9, 1993·9 cites·3 claims
- 1439US5425047AClosed induction furnace with a tilting apparatusLEYBOLD DURFERRIT GMBH·Filed 1993·Granted Jun 13, 1995·6 cites·7 claims
- 1537US5225142AMethod and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment ovenLEYBOLD DURFERRIT GMBH·Filed 1991·Granted Jul 6, 1993·7 cites·5 claims
- 1635US5478057AApparatus for the heat treatment of workpiecesLEYBOLD DURFERRIT GMBH·Filed 1994·Granted Dec 26, 1995·7 cites·6 claims
- 1733US5234486AMethod for remelting reactive metalsLEYBOLD DURFERRIT GMBH·Filed 1992·Granted Aug 10, 1993·1 cites·6 claims
- 1832US5544194AApparatus for degreasing electrically conductive materialLEYBOLD DURFERRIT GMBH·Filed 1994·Granted Aug 6, 1996·3 cites·16 claims
- 1929US5480127AApparatus for the melting and treatment of metalLEYBOLD DURFERRIT GMBH·Filed 1994·Granted Jan 2, 1996·2 cites·9 claims
- 2025US5281781AApparatus for switching a high-current power sourceLEYBOLD DURFERRIT GMBH·Filed 1991·Granted Jan 25, 1994·6 cites·4 claims
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