David Fischer
58Patents
18h-index
73Co-inventors
87Inventor score
Filing activity: Oct 18, 1979 → Oct 25, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4308863A | External fixation device | Human Necessities | 185 | Expired |
| US4450834A | External fixation device | Human Necessities | 152 | Expired |
| US9062536B2 | Devices and methods for landfill gas well monitoring and control | Electricity | 74 | Active |
| US7101940B2 | Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins | Emerging Cross-Sectional Technologies | 62 | Expired |
| US7342078B2 | Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins | Emerging Cross-Sectional Technologies | 56 | Expired |
| US5585509A | Metallocene complexes having heterofunctional groups in the cyclopentadienyl system | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6248829A | Polymers of propene | Chemistry; Metallurgy | 47 | Expired |
| US4923458A | Surgical fixation pin tension adjuster | Human Necessities | 43 | Expired |
| US7569651B2 | Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4727936A | Recovery and control system for leachate collection | Fixed Constructions | 42 | Expired |
| US6589905B1 | Method for producing a supported catalyst | Chemistry; Metallurgy | 39 | Expired |
| US6022935A | Preparation of polymers of alk-1-enes in the presence of a supported metallocene catalyst system and of antistatic agent | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5756608A | Polymerization process using metallocene complexes in the catalyst system | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6812185B2 | Preparation of a metal-containing supported catalyst or a supported catalyst component by impregnation of a support material | Chemistry; Metallurgy | 27 | Expired |
| US5483002A | Propylene polymers having low-temperature impact strength | Chemistry; Metallurgy | 24 | Expired |
| US6265339A | Process for preparing carrier-borne transition metal catalysts | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6350829B1 | Supported catalyst systems | Chemistry; Metallurgy | 19 | Expired |
| US6508310B1 | Bladder-type sampling pump controller | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5627246A | Supported metallocene complexes having heterofunctional groups in the cyclopentadienyl system as catalyst systems | Chemistry; Metallurgy | 15 | Expired |
| US6100353A | Supported metallocene catalyst systems | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5831106A | Preparation of bridged metallocene complexes | Chemistry; Metallurgy | 12 | Expired |
| US5238060A | Sampling pump with packer | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6733717B1 | Injection stretch-blow molded containers made of olefin polymers | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6326444A | Preparation of polymers of alkenes by suspension polymerization | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6308943A | Device for clamping workpiece to a surface | Performing Operations; Transporting | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.