Willi Hofen
43Patents
10h-index
72Co-inventors
78Inventor score
Filing activity: Apr 28, 1976 → Mar 23, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6297408A | Two-stage process for the production of 1,3-propanediol by catalytic hydrogenation of 3-hydroxypropanal | Chemistry; Metallurgy | 33 | Expired |
| US6342646B1 | Catalytic hydrogenation of 3-hydroxypropanal to 1,3-propanediol | Chemistry; Metallurgy | 26 | Expired |
| US5866721A | Process for separating the product gas mixture from the catalytic synthesis of methyl mercaptan | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7091384B2 | Process for increasing the selectivity of the hydrogenation of 4,4′-diaminodiphenylmethane to 4,4′-diaminodicyclohexylmethane in the presence of an N-alkyl-4,4′-diaminodiphenylmethane | Chemistry; Metallurgy | 17 | Expired |
| US6878836B2 | Process for the epoxidation of propene | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6284930A | Process for the preparation of 3-hydroxypropanal | Chemistry; Metallurgy | 14 | Expired |
| US5852219A | Catalyst, process for its preparation, and use for synthesis of methyl mercaptan | Chemistry; Metallurgy | 14 | Expired |
| US7049450B2 | Process for the purification of crude propene oxide | Chemistry; Metallurgy | 14 | Expired |
| US7157610B2 | Process for recovering methanol | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4369096A | Process for the purification of epoxides | Chemistry; Metallurgy | 10 | Expired |
| US6011179A | Process for the production of amines from imines of nitriles | Chemistry; Metallurgy | 9 | Expired |
| US5886230A | Process for continuous production of methyl mercaptan | Chemistry; Metallurgy | 8 | Expired |
| US4088676A | Process for the preparation of organic solutions of percarboxylic acids | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5892129A | Process for the preparation of 1,1,3-trialkoxypropane | Chemistry; Metallurgy | 8 | Expired |
| US7169945B2 | Process for the epoxidation of olefins | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4341709A | Preparation of .epsilon.-caprolactone | Chemistry; Metallurgy | 7 | Expired |
| US6596883B2 | Process for the epoxidation of olefins | Chemistry; Metallurgy | 7 | Expired |
| US10214504B2 | Process and reactor for the epoxidation of propene | Performing Operations; Transporting | 6 | Active |
| US7141683B2 | Process for the epoxidation of olefins | Chemistry; Metallurgy | 5 | Expired |
| US5852217A | Process for the production of primary and/or secondary amines from oxo compounds | Chemistry; Metallurgy | 4 | Expired |
| US6596881B2 | Process for the epoxidation of olefins | Chemistry; Metallurgy | 4 | Expired |
| US6617465B2 | Process for the epoxidation of olefins | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4070253A | Process for separating solutions containing propylene oxide | Chemistry; Metallurgy | 3 | Expired |
| US4904821A | Method of preparing peracetic acid | Chemistry; Metallurgy | 2 | Expired |
| US10428036B2 | Process for the epoxidation of propene | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.