Fritz Graf
9Patents
4h-index
12Co-inventors
50Inventor score
Filing activity: Sep 25, 1980 → Mar 20, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5714644A | Process and catalyst for the selective hydrogenation of butynediol to butenediol | Chemistry; Metallurgy | 54 | Expired |
| US4902828A | Recovery of aqueous glyoxylic acid solutions | Chemistry; Metallurgy | 40 | Expired |
| US4814513A | Preparation of carbonyl compounds | Chemistry; Metallurgy | 5 | Expired |
| US4450277A | Preparation of 1-substituted imidazoles | Chemistry; Metallurgy | 5 | Expired |
| US4377696A | Preparation of 4-methylimidazoles | Chemistry; Metallurgy | 4 | Expired |
| US4521632A | Purification of aqueous glyoxal solutions | Chemistry; Metallurgy | 2 | Expired |
| US4728435A | Decolorization of aqueous glyoxal solutions | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4851584A | Preparation of carbonyl compounds | Chemistry; Metallurgy | 1 | Expired |
| US4698434A | Preparation of hydroxymethylimidazoles | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.