loadpatents
Patent applications and USPTO patent grants for BIRKELBACH; RALF.The latest application filed is for "screw for screwing into plastic".
Patent | Date |
---|---|
Screw For Screwing Into Plastic App 20210364030 - ACHENBACH; MICHAEL ;   et al. | 2021-11-25 |
Self-tapping Screw App 20210115959 - ACHENBACH; MICHAEL ;   et al. | 2021-04-22 |
Fastening element for a friction-welded joint Grant 8,043,021 - Birkelbach October 25, 2 | 2011-10-25 |
Fastening Element for a Friction-Welded Joint App 20080253829 - Birkelbach; Ralf | 2008-10-16 |
Self-tapping screw Grant 7,021,877 - Birkelbach , et al. April 4, 2 | 2006-04-04 |
Device for securing a structural element to a panel-like component App 20050008456 - Birkelbach, Ralf ;   et al. | 2005-01-13 |
Self-tapping screw App 20040081535 - Birkelbach, Ralf ;   et al. | 2004-04-29 |
Self-threading screw with straight load flank and angled rear flank profile Grant 6,722,833 - Birkelbach April 20, 2 | 2004-04-20 |
Self-threading screw App 20020136616 - Birkelbach, Ralf | 2002-09-26 |
Self-drilling and thread-forming screw having a flow-forming section Grant 5,882,161 - Birkelbach March 16, 1 | 1999-03-16 |
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