Patent directory · USPTO A61K / A61P
Patents matching “nitrogen”
30 pharma patents match "nitrogen" in our USPTO index (A61K/A61P) — applicant, grant date, expiration, and drug links.
Quick answer
This filtered view shows 30 pharmaceutical patents matching "nitrogen" in our USPTO PatentsView index (CPC A61K/A61P). Search matches patent number, title, applicant, and CPC classification codes.
Patent results
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US 8318746
Nitrogen-containing five-membered heterocyclic compound
granted -
US 7714009
Nitrogen-containing fused heterocyclic compounds
granted -
US 6962919
Nitrogen-containing heterocyclic compounds, their production and use
expired -
US 6413972
Nitrogen-containing heterocyclic compounds, their production and use
expired -
US 6407116
Nitrogenous fused-ring compounds, process for the preparation of the same, and drugs
expired -
US 6194419
Nitrogen-containing heterocyclic compounds, their production and use
expired