Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10170775 | Method for producing a solder glass green seal | Hans-Rainer Zerfass, Sonja-Michaela Gross-Barsnick | 2019-01-01 |
| 9112193 | Sealing arrangement for high-temperature fuel cell stack | Hans-Rainer Zerfass | 2015-08-18 |