Wolfgang Franzischka
15Patents
6h-index
37Co-inventors
66Inventor score
Filing activity: Jun 13, 1978 → Mar 29, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5200163A | Removal of phosgene from off-gases | Performing Operations; Transporting | 25 | Expired |
| US4184982A | Preparation of a silicate hydrogenation catalyst | Performing Operations; Transporting | 14 | Expired |
| US6037381A | Preparation of polytetrahydrofuran with terminal hydroxyl groups using ion exchangers | Chemistry; Metallurgy | 12 | Expired |
| US4234727A | Preparation of amines | Chemistry; Metallurgy | 11 | Expired |
| US4745228A | Preparation of cyclic ketones | Chemistry; Metallurgy | 7 | Expired |
| US4814479A | Preparation of aromatic nitriles | Chemistry; Metallurgy | 6 | Expired |
| US5463020A | Preparation of polytetrahydrofuran or tetrahydrofuran/alkylene oxide copolymers | Chemistry; Metallurgy | 6 | Expired |
| US6300467A | Production of polytetrahydrofuran with terminal hydroxyl groups by changing the continuous and dispersed phase | Chemistry; Metallurgy | 5 | Expired |
| US5196611A | Preparation of alkyl, alkenyl, and alkynyl chlorides | Chemistry; Metallurgy | 4 | Expired |
| US5200560A | Preparation of carboxylic chlorides | Chemistry; Metallurgy | 4 | Expired |
| US4521602A | Preparation of pyridines or pyrroles from .alpha.,.omega.-dinitriles | Chemistry; Metallurgy | 4 | Expired |
| US5981688A | Continuous preparation of polytetrahydrofuran by a transesterification cascade with specific destruction of foam | Performing Operations; Transporting | 3 | Expired |
| US5623082A | Preparation of acyl chlorides | Chemistry; Metallurgy | 2 | Expired |
| US4786727A | Preparation of hexamethyleneimine | Chemistry; Metallurgy | 1 | Expired |
| US4895985A | Preparation of cyclopentanone | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.