US 644077
Forward Citations
How Felix Hoffmann Invented Aspirin
Patents that cite US 644077 — inventions that reference this patent as foundational prior art in their own applications. High forward citation counts indicate an influential patent.
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6 patents
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This patent has been cited by 6 later patents. Citation detail pages are being built out in Phase 2.
Forward citation data is sourced from the USPTO patent database. Only patents indexed in PatentBrief are shown as links.