Johan Stapersma
10Patents
4h-index
9Co-inventors
49Inventor score
Filing activity: Dec 23, 1986 → Jan 18, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7141527B1 | Catalyst system and process for the polymerization of olefins | Emerging Cross-Sectional Technologies | 53 | Expired |
| US6703457B2 | Propylene polymers and process for the preparation thereof | Chemistry; Metallurgy | 33 | Expired |
| US5179225A | Carbonylation catalyst system | Performing Operations; Transporting | 20 | Expired |
| US5166116A | Carbonylation catalyst system | Performing Operations; Transporting | 19 | Expired |
| US4873212A | Nitrogen-containing bidentate compound immobilized on a solid inorganic carrier | Performing Operations; Transporting | 3 | Expired |
| US4814457A | Complex-forming polymers and processes to prepare them | Chemistry; Metallurgy | 2 | Expired |
| US5049672A | Complex-forming polymers and processes to prepare them | Chemistry; Metallurgy | 1 | Expired |
| US4873333A | Nitrogen-containing bidentate compound immobilized on a solid inorganic carrier | Performing Operations; Transporting | 1 | Expired |
| US4933455A | Lithiated bipyridyl compounds | Performing Operations; Transporting | 1 | Expired |
| US4910264A | Complex-forming polymers and processes to prepare them | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.