Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9132541 | Pneumatic hammer mechanism and control method | Alexander John, Eduard Pfeiffer | 2015-09-15 |
| 8955615 | Pneumatic hammer mechanism | Alexander John, Eduard Pfeiffer | 2015-02-17 |
| 8616301 | Pneumatic hammer mechanism | Alexander John, Eduard Pfeiffer | 2013-12-31 |
| 8267189 | Hand-held power tool with a pneumatic percussion mechanism | Erwin Manschitz, Alexander Loeffler | 2012-09-18 |
| 7950471 | Hand-held power tool with pneumatic percussion mechanism | Alexander Loeffler | 2011-05-31 |
| 7059432 | Cup-shaped rock drill head | Udo Hauptmann, Peter Sternberger, Martin Richter | 2006-06-13 |
| 6306555 | Iodonium salts as latent acid donors | Jean-Luc Birbaum, Jean-Pierre Wolf, Stephan Ilg, Hitoshi Yamato, Toshikage Asakura | 2001-10-23 |
| 5975217 | Tool for drilling and/or chiseling | Jens Frenzel, Helmut Nussrainer, Hans-Werner Bongers-Ambrosius | 1999-11-02 |
| 5806609 | Manually operable tool for drilling and/or removing material in brittle and/or low ductile material | Maximilian Stock, Werner Kaibach, Hans-Werner Bongers-Ambrosius, Ralf Ludwig, Hanspeter Schad +1 more | 1998-09-15 |
| 5759740 | High resolution i-line photoresist of high sensitivity | Norbert Munzel, Heinz Holzwarth, Stephan Ilg | 1998-06-02 |
| 5650262 | High-resolution negative photoresist with wide process latitude | Norbert Munzel, Heinz Holzwarth | 1997-07-22 |
| 5627011 | High resolution i-line photoresist of high sensitivity | Norbert Munzel, Heinz Holzwarth, Stephan Ilg | 1997-05-06 |
| 5585699 | Control circuit for fluorescent lamps | — | 1996-12-17 |
| 5554797 | Tetra (hydroxphenyl) alkanes | Norbert M unzel, Martin Roth, Wilhelm Knobloch | 1996-09-10 |
| 5500573 | Dimmer circuit for gas discharge lamps having electronic ballasts | — | 1996-03-19 |
| 5464363 | Polishing stack for thermoplastic films or sheets | — | 1995-11-07 |
| 5436098 | Positive photoresists with enhanced resolution and reduced crystallization containing novel tetra(hydroxyphenyl)alkanes | Norbert Munzel, Martin Roth, Wilhelm Knobloch | 1995-07-25 |
| 5397203 | Tool and tool holder for hand-tool apparatus | Werner Kleine, Wolfgang Lange, Holger Meinke | 1995-03-14 |
| 5375950 | Tool and tool holder for manually operated tools | Werner Kleine | 1994-12-27 |
| 5326199 | Tool bit and tool bit chuck for manually operated tools | Werner Kleine | 1994-07-05 |
| 5296330 | Positive photoresists containing quinone diazide photosensitizer, alkali-soluble resin and tetra(hydroxyphenyl) alkane additive | Norbert Munzel, Martin Roth, Wilhelm Knobloch | 1994-03-22 |
| 5219701 | Positive photoresist containing 1,2-naphthoquinone-diazide-5-sulfonyl tris ester of 1,3,5-trihydroxybenzene and aromatic hydroxy compound sensitizer | Horst Munzel | 1993-06-15 |
| 5200293 | Photoresist composition containing specific amounts of a naphthoquinone diazide sulfonyl ester of tetrahydroxy diphenyl sulfide and a polyhydroxy compound | Horst Munzel, Ekkehard Bartmann | 1993-04-06 |
| 5145237 | Cutter bit with optimized shank | Axel Neukirchen, Josef Obermeier | 1992-09-08 |
| 5106718 | Positive photoresist composition containing alkali-soluble phenolic resin, photosensitive quinonediazide compound and sulfonyl containing compound | Ekkehard Bartmann, Horst Munzel | 1992-04-21 |