Horst Zimmermann
10Patents
5h-index
31Co-inventors
62Inventor score
Filing activity: Aug 8, 1988 → Apr 1, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5319148A | Preparation of pyrocatechol monoethers and pyrocatechols | Chemistry; Metallurgy | 16 | Expired |
| US4940805A | Preparation of 1,4-butanediol or tetrahydrofuran or both | Chemistry; Metallurgy | 16 | Expired |
| US5463130A | Preparation of peralkylated amines | Chemistry; Metallurgy | 14 | Expired |
| US5194232A | Process for the preparation of tantalum/niobium hydroxides and oxides with a low fluoride content | Chemistry; Metallurgy | 8 | Expired |
| US5319111A | Preparation of tetrahydrofuran and gamma-butyrolactone | Chemistry; Metallurgy | 8 | Expired |
| US5648545A | Preparation of amines from nitriles by alkylation with a nitrogen compound in the presence of a copper oxide/zirconium oxide catalyst | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5296614A | Preparation of phthalides | Chemistry; Metallurgy | 4 | Expired |
| US5840981A | Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine | Performing Operations; Transporting | 4 | Expired |
| US5252755A | Preparation of 4-hydroxymethyltetrahydropyrans | Chemistry; Metallurgy | 2 | Expired |
| US6147227A | Process for preparing phthalides | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.