Helmut Schulze
9Patents
6h-index
15Co-inventors
56Inventor score
Filing activity: Feb 24, 1975 → Oct 1, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4668396A | Dialysis membrane of modified cellulose with improved biocompatibility | Performing Operations; Transporting | 19 | Expired |
| US4263542A | Method and circuit arrangement for controlling an asynchronous motor supplied from a static frequency changer | Electricity | 9 | Expired |
| US4024307A | Polyurethane solutions | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4391964A | Embedding mass of polyurethane | Chemistry; Metallurgy | 7 | Expired |
| US4256869A | Polyurethanes from trans-cyclohexane-1,4-diisocyanate | Chemistry; Metallurgy | 7 | Expired |
| US4772393A | Cellulose dialysis membrane with improved biocompatibility | Performing Operations; Transporting | 6 | Expired |
| US4741927A | Production of cellulose dialysis membrane with improved biocompatibility | Performing Operations; Transporting | 6 | Expired |
| US4369492A | Device for the protection of a converter which converts an impressed D-C current from a current source into an A-C current fed to a load | Electricity | 3 | Expired |
| US4814440A | Process for producing extractive-material-reduced cellulose | Textiles; Paper | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.