Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5420738 | Audio tape cassette comprising a felt pad and a magnetic tape having a specified back coat layer | — | 1995-05-30 |
| 5357391 | Audio tape cassette, audio tape and production method of the same | Kouzaburo Sato, Yuki Sakamoto, Yoshiyuki Takahira, Yasuo Yamasaki | 1994-10-18 |
| 4895763 | Magnetic recording medium and non-aqueous suspension of inorganic solid particles for use in the production of the same | Shigeo Aoyama, Kenji Sumiya | 1990-01-23 |
| 4741953 | Magnetic recording medium | Haruo Ando | 1988-05-03 |