Assignee
DURFERRIT THERMOTECHNIK GMBH
DE·5 granted patents·34 citations·filing 1994–1997
Top patents by PatentIndex Score
5 records- 0157US5769906AProcess for recovering the salt constituents from hardening-shop salt bathsDURFERRIT THERMOTECHNIK GMBH·Filed 1996·Granted Jun 23, 1998·17 cites·2 claims
- 0238US5846501AProcess for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrateDURFERRIT THERMOTECHNIK GMBH·Filed 1997·Granted Dec 8, 1998·6 cites·14 claims
- 0330US5735971AMethod for the Pre-treatment of steel parts prior to salt bath nitridingDURFERRIT THERMOTECHNIK GMBH·Filed 1995·Granted Apr 7, 1998·6 cites·7 claims
- 0430US5453109AMethod for the preparation of a hardening salt in piece form and productDURFERRIT THERMOTECHNIK GMBH·Filed 1994·Granted Sep 26, 1995·2 cites·13 claims
- 0527US5527018AFilter unit and apparatus for desludging salt bathsDURFERRIT THERMOTECHNIK GMBH·Filed 1994·Granted Jun 18, 1996·3 cites·4 claims
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