Helmut Alfs
6Patents
4h-index
10Co-inventors
46Inventor score
Filing activity: Jul 13, 1976 → Dec 29, 1982
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4461916A | Process for the production of p-tert-octyl phenol by catalytic alkylation of phenol | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4211506A | Method and apparatus for the metered conveying of pulverulent solids | Chemistry; Metallurgy | 9 | Expired |
| US4236033A | Process for the manufacture of p-alkylphenols | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4414125A | Alkali metal or amine salts of a mixture of 2- and 3-alkyladipic acids as corrosion inhibitors | Chemistry; Metallurgy | 7 | Expired |
| US4168390A | Process for continuous alkylation of phenol using ion exchange resins | Chemistry; Metallurgy | 4 | Expired |
| US4162365A | Liquid phase air oxidation process for making phthalic acids | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.