Roger Spitz
48Patents
12h-index
51Co-inventors
84Inventor score
Filing activity: Oct 8, 1985 → Dec 3, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6239059A | Activator solid support for metallocene catalysts in the polymerization of olefins, a process for preparing such a support, and the corresponding catalytic system and polymerization process | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5192732A | Propylene polymerization cocatalyst containing silane and resultant catalysts | Chemistry; Metallurgy | 44 | Expired |
| US5561095A | Supported lewis acid catalysts for hydrocarbon conversion reactions | Chemistry; Metallurgy | 37 | Expired |
| US5055535A | Procedure for gas-phase polymerication of ethylene allowing the fabrication of linear polyethylene with a narrow molecular-weight distribution | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5648580A | Supported lewis acid catalysts for hydrocarbon conversion reactions | Chemistry; Metallurgy | 30 | Expired |
| US6569799B1 | Catalytic system, its method for preparation, and method for preparation of a copolymer of ethylene and a conjugated diene | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5110317A | Methods and compositions to enhance stain resistance of dyed nylon carpet fibers: thiocyanate to reduce yellowing | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7094854B2 | Ethylene/butadiene copolymers, catalytic system and process for the synthesis thereof | Chemistry; Metallurgy | 18 | Expired |
| US7547654B2 | Catalytic system for obtaining conjugated diene/monoolefin copolymers and these copolymers | Emerging Cross-Sectional Technologies | 17 | Expired |
| US8071800B2 | Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method | Emerging Cross-Sectional Technologies | 16 | Active |
| US5230708A | Methods and compositions to enhance stain resistance of nylon carpet fibers: thlocyanate to reduce yellowing | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6800705B2 | Catalytic system, its method for preparation and method for preparation of a copolymer of ethylene and a conjugated diene | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4639430A | Catalyst support, process for its manufacture, and catalysts prepared with this support | Chemistry; Metallurgy | 12 | Expired |
| US5212132A | Magnesium chloride particles with a polyhedral structure, catalytic components supported on these particles, resultant catalyst systems, processes for fabricating these products, and polyolefins obtained from these catalytic components | Emerging Cross-Sectional Technologies | 12 | Expired |
| US8071700B2 | Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method | Emerging Cross-Sectional Technologies | 11 | Active |
| US8492573B2 | Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method | Emerging Cross-Sectional Technologies | 10 | Active |
| US8268949B2 | Borohydride metallocene complex of a lanthanide, catalytic system including the said complex, polymerisation method using same and ethylene/butadiene copolymer obtained using said method | Emerging Cross-Sectional Technologies | 9 | Active |
| US8039565B2 | Catalytic system for obtaining conjugated diene/mono-olefin copolymers and these copolymers | Emerging Cross-Sectional Technologies | 8 | Active |
| US6512078B1 | Process for manufacturing polyester | Chemistry; Metallurgy | 7 | Expired |
| US5610114A | Catalyst for the polymerization of diolefins, method for its preparation, and its use for the preparation of polymers | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5152803A | Methods and compositions to enhance stain resistance of carpet fibers with water-soluble thiocyanate | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5739226A | Solid catalytic component containing zirconium and cycloalkadienyl groups, process for producing it and process for the polymerization of olefins in its presence | Chemistry; Metallurgy | 5 | Expired |
| US6605561B1 | Activator solid support for metallocene catalysts in the polymerization of olefins, a process for preparing such a support, and the corresponding catalytic system and polymerization process | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6949489B1 | Solid supported catalyst usable for the polymerization of conjugated dienes, process for the preparation thereof and a process for the polymerization of conjugated dienes using this catalyst | Chemistry; Metallurgy | 4 | Expired |
| US5612427A | Catalyst for the polymerization of diolefins, method for its preparation, and its use for the preparation of polymers | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.