Otto Vitzthum
13Patents
10h-index
15Co-inventors
69Inventor score
Filing activity: Aug 23, 1973 → May 7, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4153063A | Process for the extraction of nicotine from tobacco | Human Necessities | 112 | Expired |
| US4134535A | Pressure relief valve for packing containers | Emerging Cross-Sectional Technologies | 96 | Expired |
| US4123559A | Process for the production of spice extracts | Human Necessities | 30 | Expired |
| US5225223A | Process for the preparation of soluble coffee | Human Necessities | 29 | Expired |
| US4104409A | Production of hop extracts | Chemistry; Metallurgy | 28 | Expired |
| US6054162A | Stabilization of liquid coffee by treatment with alkali | Human Necessities | 18 | Expired |
| US4167589A | Method for the manufacture of caffeine free black tea | Human Necessities | 15 | Expired |
| US4198432A | Process for the production of spice extracts | Human Necessities | 14 | Expired |
| US4328255A | Method of extracting coffee oil containing aroma constituents from roasted coffee | Human Necessities | 14 | Expired |
| US4411923A | Process for the extraction of caffeine from super-critical solutions | Performing Operations; Transporting | 12 | Expired |
| US4703874A | Metering device for powdered material | Physics | 9 | Expired |
| US4540784A | Recovery of caffeine adsorbed to activated carbon | Chemistry; Metallurgy | 4 | Expired |
| US6025002A | Method of removing off-notes from cocoa products | Human Necessities | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.