Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7004988 | Gas-liquid separator | — | 2006-02-28 |
| 6905112 | Column for counter-currently contacting vapor and liquid | Gerrit Konijn | 2005-06-14 |
HL
Hugo Letzel
Overall (All Time): #2,165,763 of 4,157,543Top 55%
2
Patents All Time