Helmut Derleth
22Patents
7h-index
31Co-inventors
69Inventor score
Filing activity: Jun 18, 1976 → Jul 12, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4341663A | Process for the production of spherical shaped bodies based on Al.sub.2 O.sub.3 and optionally SiO.sub.2 | Chemistry; Metallurgy | 113 | Expired |
| US5834572A | Process for the preparation of a support for catalysts, catalyst for the polymerization of olefins and process for the polymerization of olefins by means of this catalyst | Performing Operations; Transporting | 21 | Expired |
| US4248847A | Process for preparing a substantially crystalline sodium aluminosilicate | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5421860A | Sorption of organic compounds from fluids | Performing Operations; Transporting | 16 | Expired |
| US5507956A | Abrasion-resistant carrier catalyst | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4910354A | Process for the oxychlorination of ethylene and catalyst compositions for the oxychlorination | Chemistry; Metallurgy | 11 | Expired |
| US5726260A | Process for the production of a microspheroidal powder of low dispersity, microspheroidal powder of low dispersity thus obtained, catalysts for the polymerization of alpha-olefins and process for the polymerization of alpha-olefins | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5527754A | Catalytic composition and process for the oxychlorination of ethylene using such a composition | Chemistry; Metallurgy | 7 | Expired |
| US5518979A | Abrasion-resistant catalyst carrier formed of transition aluminas | Performing Operations; Transporting | 7 | Expired |
| US6803342B1 | Catalytic composition and process for the oxychlorination of ethylene using such a composition | Chemistry; Metallurgy | 6 | Expired |
| US6300468A | Process for producing porous polymer globules | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5232883A | Process for obtaining monodisperse microspheroidal particles, microspheroidal silica particles of high specific surface, and catalysts supported on these particles | Chemistry; Metallurgy | 5 | Expired |
| US5736118A | Method of producing spherical particles | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6465382B1 | Process for producing spherical catalyst particles, catalyst particles and their use in a chemical synthesis | Performing Operations; Transporting | 4 | Expired |
| US4601992A | Product and process for the production of granules of high mechanical strength and containing molecular sieve | Performing Operations; Transporting | 4 | Expired |
| US5676845A | Process for catalytic treatment of effluents containing organic and inorganic compounds, preferably from epichlorohydrin production | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6074980A | Process for the preparation of a support for catalysts, catalyst for the polymerization of olefins and process for the polymerization of olefins by means of this catalyst | Performing Operations; Transporting | 3 | Expired |
| US4098714A | Water softening materials | Performing Operations; Transporting | 3 | Expired |
| US5716898A | Process for the production of a microspheroidal powder of low dispersity, microspheroidal powder of low dispersity thus obtained, catalysts for the polymerization of alpha-olefins and process for the polymerization of alpha-olefins | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5315051A | Process for the oxychlorination of ethylene and catalyst compositions for the oxychlorination | Chemistry; Metallurgy | 3 | Expired |
| US5468558A | Process for preparing fracture-resistant sol/gel particles | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5296564A | Process for the polymerization of alpha-olefins | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.