Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6256166 | Tape cassette for cleaning VCR heads and transport components | Robert D. DeMaster, Alexander R. Mitka, John V. Nowicki, Alexander S. Sinclair, Richard E. Skare | 2001-07-03 | $27,185,000 |
| 5841613 | Tape cassette for cleaning VCR heads and transport components | Robert D. DeMaster, Alexander R. Mitka, John V. Nowicki, Alexander S. Sinclair, Richard E. Skare | 1998-11-24 | $15,904,000 |
| 5568863 | Cassette album box with spine window | — | 1996-10-29 | $32,097,000 |
| 4642722 | Spring mechanism for lid of video cassette | Charles D. Gebeke | 1987-02-10 | $19,218,000 |
| 4564878 | Cassette removable piece | Charles D. Gebeke, Ken'ichi Yamasaki | 1986-01-14 | $3,724,000 |
| 4211337 | Multiple-point hinge for double-wall plastic box | Anthony W. Konkler | 1980-07-08 | $13,765,000 |