Willi Ripperger
5Patents
3h-index
10Co-inventors
54Inventor score
Filing activity: Jul 5, 1974 → Jul 12, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3960768A | Production of carbon by eliminating hydrogen halide from polymerized halohydrocarbons | Performing Operations; Transporting | 14 | Expired |
| US4567294A | Preparation of ammonium carbamate | Chemistry; Metallurgy | 10 | Expired |
| US4009125A | Spherical refining catalyst and process for its manufacture | Chemistry; Metallurgy | 8 | Expired |
| US7153962B1 | Process for gently cooling and crystallizing melamine from a melamine melt or from the gaseous phase | Chemistry; Metallurgy | 1 | Expired |
| US6858730B2 | Process for the production of high purity melamine from urea | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.