Wolfram Schnabel
21Patents
5h-index
27Co-inventors
65Inventor score
Filing activity: Oct 25, 1977 → Jan 10, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4539188A | Process of afterburning and purifying process exhaust gases | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4676824A | Process for generating heat and producing sponge iron | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4259081A | Process of calcining limestone in a rotary kiln | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4551414A | Positive resist material | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4391583A | Process of thermally treating bulk materials in a rotary kiln | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4551172A | Process of producing liquid carbon-containing iron | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4368177A | Process of producing quicklime by calcining in a rotary kiln | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5636581A | Grate bar and grate with cooling apparatus and process for cooling | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4490168A | Process of making steel by melting sponge iron in an electric arc furnace | Chemistry; Metallurgy | 4 | Expired |
| US4181520A | Process for the direct reduction of iron oxide-containing materials in a rotary kiln | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4443250A | Process of producing sponge iron by a direct reduction of iron oxide-containing materials | Chemistry; Metallurgy | 4 | Expired |
| US4247323A | Process of directly reducing iron oxide-containing materials | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4144052A | Process of directly reducing iron-containing oxidic materials | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4436286A | Process of afterburning combustible constituents of exhaust gases from rotary kilns | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4238222A | Waelz process of volatilizing zinc and lead from iron oxide-containing materials | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4838934A | Process for a direct reduction of iron oxide containing materials in a rotary kiln | Chemistry; Metallurgy | 2 | Expired |
| US4469509A | Process of producing sponge iron by a direct reduction of iron oxide-containing material in a rotary kiln | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4369059A | Process of directly reducing iron oxide containing materials in a rotary kiln | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4581401A | Radiation sensitive polymeric material | Performing Operations; Transporting | 1 | Expired |
| US4312666A | Steel making process | Emerging Cross-Sectional Technologies | 0 | Expired |
| US4179280A | Direct-reduction process carried out in a rotary kiln | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.