Inventor · Krefeld, DE

Hilmar Rieck

4Patents
3h-index
11Co-inventors
47Inventor score

Filing activity: Nov 3, 1980 → Jun 3, 1997

Most-cited inventions

PatentTitleAreaCited byStatus
US4344799A Readily dispersible TiO.sub.2 pigment Chemistry; Metallurgy 12 Expired
US5792250A Process for the production of inorganically coated pigments and fillers Chemistry; Metallurgy 11 Expired
US4304758A Hydrolyzable titanyl sulphate solutions by decomposition of ternary raw material mixtures Chemistry; Metallurgy 4 Expired
US5174817A Process for the calcination of filter cakes with high solids contents being partly pre-dried in a directly heated rotary kiln Chemistry; Metallurgy 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.