What chapter of the hospital does the patent cover?

Official seal. According to the academic reference network, hospital patents need to be stamped with the official seal of the hospital. A seal is stationery printed on a document to indicate identity or signature. Seals are always stained with pigment before printing. Those that are not stained with pigment and will appear concave and convex after being printed on a flat surface are called steel seals, and some are printed on wax or wax, or wax prints on envelopes.