Udo Holtmann
6Patents
3h-index
9Co-inventors
50Inventor score
Filing activity: Jun 24, 1992 → Mar 8, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5723404A | Process for the production of mixed oxide powders for catalysts for the removal of nitrogen oxides | Performing Operations; Transporting | 21 | Expired |
| US5792250A | Process for the production of inorganically coated pigments and fillers | Chemistry; Metallurgy | 11 | Expired |
| US9428402B2 | Method for producing finely divided haematite and for producing iron oxide red pigments | Emerging Cross-Sectional Technologies | 4 | Active |
| US7837785B2 | Process for the preparation of pigment granules and the use thereof | Emerging Cross-Sectional Technologies | 2 | Active |
| US5268159A | Process for the production of storable, free-flowing hydrated ferrous sulfate | Chemistry; Metallurgy | 1 | Expired |
| US11104807B2 | Preparation of red iron oxide pigment | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.