US 5639476
Prior Art
How to Make Pill Coatings That Keep Medicine Stable Over Time
Patents that US 5639476 cites as prior art — the earlier inventions that this patent builds upon or distinguishes itself from.
CITED PATENTS
48
IN PATENTLENS
0
Citation data
This patent cites 48 prior patents. Citation detail pages are being built out in Phase 2.
Prior art citations are sourced from the USPTO patent database. Only patents indexed in PatentBrief are shown as links — others are recorded by number only.