Hans Gropper
15Patents
8h-index
29Co-inventors
68Inventor score
Filing activity: Apr 18, 1975 → Feb 11, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5194509A | Peroxide-free grafting of homopolymers and copolymers of ethylene having densities equal to or greater than 0.930 g/cm3, and use of the graft copolymers for the preparation of ionomers of adhesion promoters | Chemistry; Metallurgy | 51 | Expired |
| US4710552A | Preparation of homopolymers of ethene and copolymers of ethene with higher.alpha.-monolefins using a Ziegler catalyst system | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4906690A | Grafting polyolefin blends and use of the graft copolymer blends as an adhesion promoter and for the preparation of ionomers | Chemistry; Metallurgy | 14 | Expired |
| US4728703A | Preparation of homopolymers and copolymers of ethene by Phillips catalysis | Chemistry; Metallurgy | 14 | Expired |
| US4048411A | Manufacture of copolymers of ethylene | Chemistry; Metallurgy | 13 | Expired |
| US5189123A | Catalyst for the preparation of high molecular weight homopolymers and copolymers of ethene, and the manufacture thereof | Chemistry; Metallurgy | 10 | Expired |
| US4076919A | Manufacture of ethylene polymers in a two-zone tubular reactor at pressure above 500 bars | Chemistry; Metallurgy | 9 | Expired |
| US4115638A | Process for letting down ethylene high pressure polymerization systems | Chemistry; Metallurgy | 9 | Expired |
| US5352658A | Phillips catalyst and its use for the preparation of ethylene homopolymers and copolymers | Chemistry; Metallurgy | 8 | Expired |
| US4074040A | Manufacture of ethylene polymers in an autoclave reactor | Chemistry; Metallurgy | 5 | Expired |
| US5310712A | Process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins | Chemistry; Metallurgy | 5 | Expired |
| US3987020A | Manufacture of ethylene polymers | Chemistry; Metallurgy | 3 | Expired |
| US4177340A | Manufacture of high-pressure polyethylene | Chemistry; Metallurgy | 2 | Expired |
| US5189120A | Peroxide-free grafting of homopolymers and copolymers of ethylene having densities less than 0.930 g/cm.sup.3, and use of the graft copolymers for the preparation of ionomers or adhesion promoters | Chemistry; Metallurgy | 1 | Expired |
| US5756627A | High molecular weight homopolymers and copolymers of ethene | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.