Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8188392 | Serrated contact members | Peter Isberg, Mats Johansson, Krister Linnarud, Lars Eriksson | 2012-05-29 |
| 7524166 | Compressor cleaning system | Martin Thiele, Henning Fuhrmann, Ralf Strumpler | 2009-04-28 |
| 6932928 | Method of producing a PTC-resistor device | Ralf Strumpler, Ruzica Loitzl-Jelenic | 2005-08-23 |
| 6628485 | Apparatus for limiting an electrical current | Erkki Rajala, Ralf Strumpler, Timo Jokiniemi | 2003-09-30 |
| 6515570 | Fuse with overstoichiometric amount of oxidant | Uwe Kaltenborn, Ralf Strumpler, Felix Greuter | 2003-02-04 |
| 6429766 | Electrical device comprising a PTC polymer element for overcurrent fault and short-circuit fault protection | Ralf Strumpler | 2002-08-06 |
| 6396383 | Protective element | Felix Greuter, Ruzica Loitzl-Jelenic, Jorgen Skindhoj, Ralf Strumpler | 2002-05-28 |
| 6259349 | Electrical component with a constriction in a PTC polymer element | Ralf Strumpler, Erkki Rajala, Jorgen Skindhoj | 2001-07-10 |
| 6157290 | Resistor element | Ralf Strumpler, Jorgen Skindhoj, Felix Greuter | 2000-12-05 |
| 5861795 | Current-limiting resistor having PTC behavior | Felix Greuter, Gerhard Mauthe, Zdenek Pelanek, Claus Schuler, Jorgen Skindhoj +1 more | 1999-01-19 |