Gerhard Kilpper
8Patents
3h-index
13Co-inventors
50Inventor score
Filing activity: Apr 25, 1973 → Feb 27, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4328339A | Continuous preparation of isatoic anhydride | Chemistry; Metallurgy | 5 | Expired |
| US4233459A | Continuous manufacture of anthranilic acid | Chemistry; Metallurgy | 4 | Expired |
| US5342950A | Preparation of quinophthalone derivatives | Chemistry; Metallurgy | 4 | Expired |
| US4012305A | Production of 1-methyl-3-phenylindans | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4421931A | Preparation of anthranilic acid amides | Chemistry; Metallurgy | 2 | Expired |
| US4950756A | Preparation of 1-nitroanthraquinone-2-carboxylic acid | Chemistry; Metallurgy | 1 | Expired |
| US4276433A | Continuous preparation of anthranilic acid | Chemistry; Metallurgy | 1 | Expired |
| US4419519A | Continuous preparation of phthalimide | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.