Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4508654 | Preparation of bis-carboxy ethyl germanium sesquioxide and its propionic acid derivatives | Ching-Te Chang, Hsueh-Ling Su | 1985-04-02 |
| 4420430 | Method for preparing organo germanium propionic acid derivatives | Ching-Te Chang, Hsueh-Ling Su | 1983-12-13 |