Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7470498 | Mg-based ferrite, an electrophotographic development carrier containing the ferrite, and a developer containing the carrier | Hidehiko Iinuma, Masatomo Hayashi | 2008-12-30 |
| 4751164 | Method of making carrier for use in electrophotographic developers | Mitsuhiro Katayama, Kazuyoshi Oka, Ulf Engstrom, Svenn E. Larssen | 1988-06-14 |
| 4732835 | Carrier for use in electrophotographic developers | Mitsuhiro Katayama, Kazuyoshi Oka, Ulf Engstrom, Svenn E. Larrssen | 1988-03-22 |
| 4503136 | Two-component resin system of acrylic and diene polymers for coating electrophotographic carrier particles | Shigeo Yokoe, Kazuyoshi Oka, Tamotsu Murakami, Tsugifusa Hashimoto | 1985-03-05 |
| 4486502 | Resin-coated carrier for use in two-component electrophotographic developers | Shigeo Yokoe, Kazuyoshi Oka, Tamotsu Murakami, Tsugifusa Hashimoto | 1984-12-04 |