Aspirin tablet
US4555399A · kind A · utility
57Cited by
32References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1984 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Mar 8, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/60
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A tablet, which readily disintegrates in gastric fluid to give aspirin crystals coated with a polymeric film preventing the aspirin crystals from contacting the stomach wall but not preventing access of gastric fluid to the aspirin contained within the polymer film, which consists of a plurality of aspirin crystals 20-60 mesh in size coated with about 3-10% by weight of a polymeric mixture comprising from about 1.5 to about 15 parts by weight ethylcellulose and about one part by weight hydroxypropylcellulose; a compression aid; a disintegrant; and a tableting aid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.