Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7428861 | Valve for hydraulic props of shield-type support frames, and shield-type support frame | Michael Dettmers | 2008-09-30 |
| 6748639 | Method for producing a dispensing device for products that can be spread easily | Christian Hemming, Werner Hoeve | 2004-06-15 |
| 6555217 | Self-supporting and redetachable adhesive article | Wolf-Ruediger Mueller, Joerg Kuhn | 2003-04-29 |
| 6180705 | Polyacrylamide with low molecular weight | Norbert Huebner, Wolf-Ruediger Mueller, Ludwig Schieferstein | 2001-01-30 |
| 6093270 | Bonding process | Andreas Ferencz, Norbert Huebner, Herbert Fischer, Lothar Unger, Wolf-Ruediger Mueller +2 more | 2000-07-25 |
| 5746529 | Container for a fluid product | Marie-Claude Bossert, Johannes Hubertus Jozef Maria Kelders, Roy Edwin Van Swieten | 1998-05-05 |
| D372671 | Correction fluid holder | Marie-Claude Bossert | 1996-08-13 |
| 5433775 | Adhesive stick based on starch ethers | Karl-Josef Gardenier, Gerhard Gierenz, Wolfgang Klauck, Horst Donothek, Norbert Doering | 1995-07-18 |
| 5427142 | Valve device for use in electro-hydraulic control systems of mining installations | Michael Dettmers | 1995-06-27 |
| 5159872 | Valve units for use in hydraulic control systems of mining equipment | Michael Dettmers | 1992-11-03 |
| 4755084 | Multi-part roof-contacting structures of mine roof supports | Harry Rosenberg, Walter Weirich | 1988-07-05 |
| 4737052 | Distributor | Walter Weirich | 1988-04-12 |
| 4718458 | Distributors for pressure fluid control system in mineral mining installations | Walter Weirich | 1988-01-12 |
| 4544185 | Hydraulic coupling device | Walter Weirich | 1985-10-01 |
| 4536017 | Connecting devices for use with pneumatic or hydraulic hoses | Walter Weirich | 1985-08-20 |
| 4422807 | Mine roof supports | Michael Dettmers, Walter Weirich | 1983-12-27 |
| 4378124 | Hydraulic coupling device | Walter Weirich | 1983-03-29 |
| 4271135 | Preparation of finely-divided, water-insoluble silicate cation-exchangers with a narrow particle size spectra | Willi Wuest, Guenther Just | 1981-06-02 |
| 4247135 | Hydraulic coupling device | Walter Weirich | 1981-01-27 |