Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5189521 | Image forming apparatus and method for correction image density non-uniformity by reading a test pattern recorded by the apparatus | Toshihiko Ohtsubo, Akio Suzuki, Kiyohisa Sugishima, Eiichi Takagi, Yoshihiro Takada | 1993-02-23 |