Walter Bertkau
8Patents
2h-index
20Co-inventors
47Inventor score
Filing activity: Dec 16, 2005 → Mar 23, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10131831B2 | Process for acidizing using retarded acid formulations | Chemistry; Metallurgy | 4 | Active |
| US8568522B2 | Method of passivating metallic surfaces by means of copolymers having phosphoric acid and/or phosphonic acid groups | Chemistry; Metallurgy | 2 | Active |
| US7905964B2 | Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes | Emerging Cross-Sectional Technologies | 2 | Active |
| US7749337B2 | Method for the passivation of metal surfaces with polymers containing acid groups | Emerging Cross-Sectional Technologies | 1 | Active |
| US8863841B2 | Alkanesulfonic acid microcapsules and use thereof in deep wells | Emerging Cross-Sectional Technologies | 0 | Active |
| US11001902B2 | Production of leather | Chemistry; Metallurgy | 0 | Active |
| US8163395B2 | Method for coating metals | Emerging Cross-Sectional Technologies | 0 | Active |
| US8372216B2 | Continuous method for treating the surface of metal strips | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.