Helmut Keul
13Patents
6h-index
37Co-inventors
66Inventor score
Filing activity: Feb 24, 1987 → Sep 22, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4754017A | Process for the preparation of linear aliphatic polycarbonate from cyclic aliphatic carbonate | Chemistry; Metallurgy | 17 | Expired |
| US7407728B2 | Alkaline cell or battery | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6451921B2 | Block copolymers with sulfonated polyether sulfone units | Performing Operations; Transporting | 13 | Expired |
| US4801632A | Cellulose ester moulding materials with improved toughness | Chemistry; Metallurgy | 10 | Expired |
| US6573346B1 | Oligomeric and polymeric telechelics | Chemistry; Metallurgy | 9 | Expired |
| US6632895B1 | Functionalized alkoxyamine initiators | Chemistry; Metallurgy | 9 | Expired |
| US10266656B2 | Silicone compounds and compositions thereof for the treatment of amino acid based substrates | Chemistry; Metallurgy | 5 | Active |
| US5071921A | Thermoplastic block copolymers based on cyclic carbonates or esters | Chemistry; Metallurgy | 5 | Expired |
| US7728069B2 | Reactive cyclic carbonates and ureas used for modifying biomolecules, polymers, and surfaces | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6455645B1 | Process for the production of telechelic polymers, telechelic polymers produced in this manner and use thereof | Chemistry; Metallurgy | 2 | Expired |
| US6800708B2 | Oligomeric and polymeric telechelics | Chemistry; Metallurgy | 1 | Expired |
| US5116918A | Crosslinked copolymers based on cyclic esters and carbonates | Chemistry; Metallurgy | 1 | Expired |
| US9493475B2 | Textile treatment compounds and compositions | Textiles; Paper | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.