Nifedipine patent 1962?

Short answer: 1962 is unlikely to be the correct patent year for nifedipine. The earliest patent filings for nifedipine and related dihydropyridine calcium channel blockers appear in the late 1960s (roughly 1967–1969) rather than 1962. The drug itself was developed and brought to market later (in the 1970s–80s in various regions).

If you’re after exact patent details (patent numbers, assignees, or expiry), I can help if you specify:
- which jurisdiction(s) (US, Europe, Japan, etc.)
- whether you want the original patent family or later related patents
- whether you’re after the earliest patent filing or the first marketing/administrative patent

Tips to look up quickly (no fee):
- Google Patents: search for “nifedipine” and filter by earliest filing date; look for the first patent family entries (often from Japanese or European inventors/companies in the late 1960s).
- Check international patent families (PCT) to trace continuations and regional patents from the late 1960s onward.
- If you have a suspected assignee (e.g., a specific company), search by assignee + nifedipine + year range.

If you want, tell me your region and I’ll outline a likely earliest patent family and its key details.