Othmar Stelzer
6Patents
3h-index
11Co-inventors
50Inventor score
Filing activity: Dec 11, 1989 → Dec 10, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5925785A | Secondary and tertiary phosphines and processes for their preparation | Chemistry; Metallurgy | 10 | Expired |
| US6011172A | Process for alkylating elemental phosphorus | Chemistry; Metallurgy | 8 | Expired |
| US5268479A | Process for the preparation of tertiary phosphines | Chemistry; Metallurgy | 3 | Expired |
| US5003108A | Process for the preparation of phosphanes | Chemistry; Metallurgy | 2 | Expired |
| US6187953A | Guanidinium phosphanes, their production and their use | Performing Operations; Transporting | 0 | Expired |
| US6300517A | Phosphine ligands with amino acid groups, method for their production and use thereof as catalyst components | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.