HAG Aktiengesellschaft
7Patents
0Active
7Granted
28Portfolio score
Filing activity: Mar 8, 1976 → Feb 9, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4134535A | Pressure relief valve for packing containers | Emerging Cross-Sectional Technologies | 96 | Expired |
| US4411923A | Process for the extraction of caffeine from super-critical solutions | Performing Operations; Transporting | 12 | Expired |
| US4168324A | Process of extracting stimulants from coffee | Human Necessities | 12 | Expired |
| US4255458A | Method for the selective extraction of caffeine from vegetable materials | Performing Operations; Transporting | 12 | Expired |
| US4060394A | Bottom closure for a chemical reactor | Performing Operations; Transporting | 2 | Expired |
| US4308291A | Process for decaffeinating green coffee | Human Necessities | 2 | Expired |
| US4049409A | Method for transferring a highly compressed gas from a reactor to a storage tank with condensation of the gas | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.