Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5601647 | Production of a magnetic recording medium | Reinhard Kraetschmer, Michael Breitsameter, Siegfried Rieger | 1997-02-11 |
| 5466542 | A magnetic recording medium | Reinhard Kraetschmer, Josef Schelble | 1995-11-14 |
| 5014150 | Magnetic tape cassette having outer appearance modified by surface printing | Rudolf Breuer, Gottfried Lutz, Helmut Schultz | 1991-05-07 |
| 4916565 | Magnetic tape cassette having improved closure means | Rudolf Breuer, Hubert Brunner, August Liepold, Ludwig Zeroni | 1990-04-10 |
| 4884158 | Magnetic tape cassette having a spring-biased front panel and locking member | Hubert Brunner, Ludwig Zeroni | 1989-11-28 |
| 4712150 | Tape cassette having a lock mechanism for locking a tape protective lid | Ludwig Zeroni, Hubert Brunner | 1987-12-08 |
| 4623105 | Video cassette | Hubert Brunner, Ludwig Zeroni | 1986-11-18 |
| 4602303 | Cover for the light channel for a device for switching-off a magnetic cassette tape at the end of its run | August Liepold, Hubert Brunner, Ludwig Zeroni | 1986-07-22 |
| 4564120 | Magnetic tape cassette | August Liepold, Hubert Brunner, Ludwig Zeroni | 1986-01-14 |
| 4527691 | Magnetic tape cassette | August Liepold, Hubert Brunner, Ludwig Zeroni | 1985-07-09 |
| 4473198 | Spool for video cassette | August Liepold, Hubert Brunner | 1984-09-25 |
| 4336278 | Method for coating magnetic, binder-containing dispersions on flexible substrates | Siegfried Rieger, Friedrich Ankenbrand | 1982-06-22 |