Inventor · disambiguated record
Karl Ernst Friedrich
Also filed as: FRIEDRICH KARL-ERNST
6 granted patents·1 pending application·34 citations·filing 2000–2014
79Inventor score
Files withTHYSSENKRUPP STAHL AG3THYSSENKRUPP RASSELSTEIN GMBH2THYSSENKRUPP ELECTRICAL STEEL EBG GMBH1THYSSENKRUPP STEEL AG1
Top patents by PatentIndex Score
7 records- 0181US9623473B2Method for producing a ring-pull top from a steel sheet provided with a protective layer and a ring-pull top produced therebyTHYSSENKRUPP RASSELSTEIN GMBH·Filed 2012·Granted Apr 18, 2017·3 cites·7 claims
- 0279US6773514B1Method for producing non-grain oriented electric sheet steelTHYSSENKRUPP STAHL AG·Filed 2000·Granted Aug 10, 2004·14 cites·44 claims
- 0370US6582528B1Method of producing non-grain-oriented electrical sheetTHYSSENKRUPP ELECTRICAL STEEL EBG GMBH·Filed 2000·Granted Jun 24, 2003·9 cites·12 claims
- 0464US6767412B2Method for producing non-grain-oriented magnetic steel sheetTHYSSENKRUPP STAHL AG·Filed 2001·Granted Jul 27, 2004·6 cites·38 claims
- 0550US7501028B2Non-grain oriented magnetic steel strip or magnetic steel sheet and method for its productionTHYSSENKRUPP STAHL AG·Filed 2003·Granted Mar 10, 2009·2 cites·15 claims
- 0647US2014349135A1Method for coating a steel sheet with a metal layerTHYSSENKRUPP RASSELSTEIN GMBH·Filed 2014·Application pending·0 cites
- 0732US7658807B2Hot-rolled strip intended for the production of non-grain oriented electrical sheet and a method for the production thereofTHYSSENKRUPP STEEL AG·Filed 2002·Granted Feb 9, 2010·0 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Karl Ernst Friedrich files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →