Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859206 | Hair dye preparations containing nitrodiphenylamine derivative | David Rose, Edgar Lieske, Norbert Maak | 1989-08-22 |
| 4834971 | Hair permanent-waving method and aftertreatment composition | Adolf Klenk, Detlef Hollenberg | 1989-05-30 |
| 4824594 | Free-flowing pearlescent concentrate | Anke Kaczich | 1989-04-25 |
| 4820511 | Hair care and aftertreatment preparations | Fritz Lange, Karl Giede | 1989-04-11 |
| 4814101 | Zwitterionic polymers and their use in hair treatment preparations | Ludwig Schieferstein, Kurt Seidel, Karl Giede, Peter Busch | 1989-03-21 |
| 4795632 | Preparations for washing and rinsing hair | Karl Giede | 1989-01-03 |