Rainer Hemmerich
15Patents
8h-index
32Co-inventors
68Inventor score
Filing activity: Oct 8, 1987 → Jan 28, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4857613A | Preparation of homopolymers and copolymers of propene using a Ziegler-Natta catalyst system | Chemistry; Metallurgy | 56 | Expired |
| US5034481A | Avoidance of colored impurities in the preparation of ultrahigh molecular weight ethylene polymers by means of a titanium-containing catalyst system | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5288824A | Preparation of homo- and copolymers of propene by means of a Ziegler-Natta catalyst system | Chemistry; Metallurgy | 27 | Expired |
| US5034480A | Avoidance of colored impurities in the preparation of ultrahigh molecular weight ethylene polymers by means of titanium-containing catalyst system | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4831090A | Preparation of homopolymers of ethene and copolymers of ethene with higher .alpha.-monoolefins using a Ziegler catalyst system | Chemistry; Metallurgy | 15 | Expired |
| US5006620A | Preparation of homopolymers and copolymers of propene by means of a Ziegler-Natta catalyst system | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5210160A | Preparation of homopolymers of ethene and copolymers of ethene with higher a-monoolefins using a Ziegler catalyst system | Chemistry; Metallurgy | 10 | Expired |
| US5162465A | Preparation of homopolymers and copolymers of propene using a Ziegler-Natta catalyst system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5658840A | Preparation of Ziegler-Natta type catalyst systems | Chemistry; Metallurgy | 8 | Expired |
| US4845176A | Preparation of homopolymers and copolymers of ethene using a chromium trioxide catalyst | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4970184A | Catalyst for the polymerization of ethylene, its preparation and the use of the resulting ethylene polymers for the production of films exhibiting little blocking | Chemistry; Metallurgy | 6 | Expired |
| US5310712A | Process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins | Chemistry; Metallurgy | 5 | Expired |
| US6524995B2 | Catalyst systems of the Ziegler-Natta type | Chemistry; Metallurgy | 5 | Expired |
| US6156691A | Ziegler-Natta catalyst systems modified during their preparation | Chemistry; Metallurgy | 2 | Expired |
| US7232785B2 | Solid catalytic component and catalytic system of the ziegler-natta type, process for their preparation and their use in the polymerization of alk-1-enes | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.