Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648838 | Method and apparatus for electrically connecting a developer roller to a bias source | Steven B. Michlin | 1997-07-15 |
| 4504670 | Process for the continuous manufacture of trioxane | Hartmut Voigt, Karl-Friedrich Muck, Helmut Bar, Karlheinz Burg, Gunter Sextro | 1985-03-12 |
| 4438730 | Process for the generation of steam | Gerhard Link, Siegfried Jung, Reinhold Zapp, Helmut Bar | 1984-03-27 |
| 4340542 | Process and equipment for the continuous manufacture of trioxan | Helmut Bar, Karl-Friedrich Muck, Paul Zorner | 1982-07-20 |