Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656752 | Preparation of naphthalocyanines | Juergen Kipper | 1997-08-12 |
| 5607762 | Ink-ribbons comprising IR-absorbing compounds | Juergen Kipper, Friedrich Closs, Helmut Bellaire | 1997-03-04 |