Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5259031 | Sheets for concealing information recorded on recording paper for use with a facsimile and method of concealing information recording paper by the use of the concealment sheet | — | 1993-11-02 |
| 5217162 | Communication medium such as postcard and method of manufacturing the same | — | 1993-06-08 |
| 5205475 | Sealed letters, postcards and like confidential sheets, and paper, continuous form or document sheet for preparing same | Norio Hochin | 1993-04-27 |
| 5078314 | Two-way communication medium in the form of double post card or the like | — | 1992-01-07 |
| 5075780 | Method of reproducing gradations according to a ratio of fine pixels turned on to fine pixels turned off | — | 1991-12-24 |
| 5055944 | Image signal processing apparatus | — | 1991-10-08 |
| 5020829 | Two-way communication sheets in the form of double post card, double letter sheet, and the like | Norio Houchin | 1991-06-04 |