Preparation of caffeine
US4380631A · kind A · utility
2Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1982 |
| Grant date | Apr 19, 1983 |
| Priority date | — |
| Expiry date | Mar 19, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Caffeine is prepared from theophylline, carbon monoxide and methanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.