Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861663 | Process for antistatic treatment or pretreatment of polyamides, polyimides, antistatically treated or pretreated materials, and the use thereof | Kirkor Sirinyan, Hans-Joachim Laue, Dietrich Michael, Milan-Josef Tima | 1989-08-29 |
| 4849492 | Polyhydantoins containing sulphone groups | Gerhard Heywang, Friedrich Jonas, Werner Schmidtberg | 1989-07-18 |
| 4847139 | Flexible circuits | Gerhard D. Wolf, Kirkor Sirinyan, Ulrich von Gizycki | 1989-07-11 |
| 4830714 | Process for the production of printed circuit boards | Kirkor Sirinyan, Gerhard D. Wolf, Ulrich von Gizycki | 1989-05-16 |
| 4804475 | Metallized membrane systems | Kirkor Sirinyan, Karlheinz Hildenbrand, Ulrich von Gizycki, Hermann Perrey, Gerhard D. Wolf | 1989-02-14 |