Norbert Eisen
15Patents
6h-index
23Co-inventors
62Inventor score
Filing activity: Apr 17, 1991 → Aug 7, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7504052B2 | Antistatic and electrically conductive polyurethanes | Chemistry; Metallurgy | 16 | Active |
| US5470515A | Rotational molding process for insulating pipes | Performing Operations; Transporting | 13 | Expired |
| US5578651A | Process for producing rigid polyurethane foams | Chemistry; Metallurgy | 11 | Expired |
| US5587117A | Process for insulating pipes using polyurethane rigid foams by the rotational casting process | Chemistry; Metallurgy | 10 | Expired |
| US5602190A | Process for the production of hard polyurethane foams | Chemistry; Metallurgy | 8 | Expired |
| US5527602A | Laminates of graft polymer and thermoplastic polyurethane | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5736588A | Process for preparing rigid polyurethane foams | Chemistry; Metallurgy | 6 | Expired |
| US6316513A | Process for the producing of hard polyurethane foams with low heat conductivity | Chemistry; Metallurgy | 6 | Expired |
| US5534299A | Process for insulating pipes | Chemistry; Metallurgy | 5 | Expired |
| US5269986A | Process for the production of back foamed internal parts for refrigeration furniture | Performing Operations; Transporting | 4 | Expired |
| US6071978A | Method of producing hydrocarbon-expanded rigid polyurethane foams | Chemistry; Metallurgy | 3 | Expired |
| US5962542A | Process for producing hydrocarbon-blown hard polyurethane foams | Chemistry; Metallurgy | 2 | Expired |
| US6590003B2 | Method for producing soft to semi-rigid polyurethane integral foamed materials | Chemistry; Metallurgy | 2 | Expired |
| US6235799A | Method for producing soft to medium-hard structural polyurethane foams | Chemistry; Metallurgy | 1 | Expired |
| US6509387B1 | Process for preparing rigid foamed materials containing urethane groups | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.