Inventor · disambiguated record
Ralf Birkelbach
Also filed as: BIRKELBACH RALF
6 granted patents·1 pending application·94 citations·filing 1995–2019
81Inventor score
Top patents by PatentIndex Score
7 records- 0188US8043021B2Fastening element for a friction-welded jointEJOT GMBH & CO KG·Filed 2006·Granted Oct 25, 2011·16 cites·20 claims
- 0271US6722833B2Self-threading screw with straight load flank and angled rear flank profileEJOT VERBINDUNGSTECH GMBH & CO·Filed 2000·Granted Apr 20, 2004·21 cites·6 claims
- 0369US5882161ASelf-drilling and thread-forming screw having a flow-forming sectionEJOT VERBINDUNGSTECH GMBH & CO·Filed 1995·Granted Mar 16, 1999·41 cites·13 claims
- 0462US7021877B2Self-tapping screwEJOT GMBH & CO KG·Filed 2003·Granted Apr 4, 2006·16 cites·10 claims
- 0540US11754110B2Self-tapping screwEJOT GMBH & CO KG·Filed 2019·Granted Sep 12, 2023·0 cites·15 claims
- 0640US2005008456A1Device for securing a structural element to a panel-like componentEJOT GMBH & CO KG·Filed 2004·Application pending·0 cites
- 0738US12372111B2Screw for screwing into plasticEJOT GMBH & CO KG·Filed 2019·Granted Jul 29, 2025·0 cites·25 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →