David Knoeppel
44Patents
6h-index
35Co-inventors
65Inventor score
Filing activity: Sep 22, 2003 → Aug 4, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6930071B2 | Ziegler-natta catalyst for polyolefins | Chemistry; Metallurgy | 30 | Expired |
| US6864207B2 | Ziegler-Natta catalyst for polyolefins | Chemistry; Metallurgy | 28 | Expired |
| US8242212B2 | Polystyrene blends | Chemistry; Metallurgy | 11 | Active |
| US8389636B2 | Polystyrene blends | Chemistry; Metallurgy | 9 | Active |
| US8809459B2 | Polystyrene blends | Chemistry; Metallurgy | 9 | Active |
| US7473664B2 | Formation of Ziegler-Natta catalyst | Chemistry; Metallurgy | 9 | Active |
| US8653187B2 | Use of nano alumina or silica dispersed in polystyrene | Emerging Cross-Sectional Technologies | 3 | Active |
| US8957152B2 | Polarity manipulation in polystyrene for enhanced bio-polymer miscibility | Chemistry; Metallurgy | 3 | Active |
| US8110644B2 | Bimodal pipe resin and products made therefrom | Chemistry; Metallurgy | 3 | Active |
| US8859703B2 | Bimodal pipe resin and products made therefrom | Chemistry; Metallurgy | 2 | Active |
| US9193839B2 | Crosslinking control in high impact polystyrene manufacturing process | Chemistry; Metallurgy | 2 | Active |
| US8592535B2 | Ziegler-natta catalyst systems and polymers formed therefrom | Chemistry; Metallurgy | 1 | Active |
| US8063139B2 | Methods of making styrenic polymeric compositions and methods of using same | Chemistry; Metallurgy | 1 | Active |
| US8258246B2 | Preparation of supported chromium catalyst and polymerization process | Chemistry; Metallurgy | 1 | Active |
| US9914814B2 | Polar polystyrene copolymers for enhanced foaming | Chemistry; Metallurgy | 1 | Active |
| US8383751B2 | High melt strength polystyrene and methods of making same | Chemistry; Metallurgy | 1 | Active |
| US8822597B2 | Increasing rubber phase volume in rubber-modified polystyrene | Chemistry; Metallurgy | 1 | Active |
| US8501653B2 | Heat-treated Ziegler-Natta catalysts for ethylene polymerization | Chemistry; Metallurgy | 1 | Active |
| US9120889B2 | Increasing rubber phase volume in rubber-modified polystyrene | Chemistry; Metallurgy | 1 | Active |
| US9944724B2 | Ziegler-Natta catalysts doped with non-group IV metal chlorides | Chemistry; Metallurgy | 1 | Active |
| US9796842B2 | Epoxy functional polystyrene for enhanced PLA miscibility | Chemistry; Metallurgy | 1 | Active |
| US8981004B2 | Nano alumina or silica dispersed in polystyrene | Emerging Cross-Sectional Technologies | 1 | Active |
| US10125249B2 | Polarity manipulation in polystyrene for enhanced bio-polymer miscibility | Chemistry; Metallurgy | 0 | Active |
| US8889752B2 | Foamed articles exhibiting improved thermal properties | Chemistry; Metallurgy | 0 | Active |
| US8003741B2 | Ziegler-Natta catalyst | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.