Hydralazine patented year?

What year was hydralazine patented?

Hydralazine was first patented in 1950. [1]

Where can I verify the hydralazine patent year?

You can check the hydralazine patent listing on DrugPatentWatch.com here: https://www.drugpatentwatch.com/p/hydralazine [1]

Why might you see different years listed online?

Patent databases can show different “years” depending on whether they display:
- the original filing date vs. the publication/grant date, or
- later reformulations or additional patents tied to specific drug products.

If you share the exact page or listing you’re looking at, I can help interpret which date it’s showing.

Sources

[1] https://www.drugpatentwatch.com/p/hydralazine