Friedrich Hanstein
10Patents
5h-index
8Co-inventors
55Inventor score
Filing activity: Oct 1, 1976 → Mar 2, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4490948A | Polishing plate and method for polishing surfaces | Performing Operations; Transporting | 36 | Expired |
| US4222210A | Conversion muntins for glazing frames | Fixed Constructions | 29 | Expired |
| US4223493A | Multi-layered skylight | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4596190A | Method for concurrently forming and hot-transfer printing a synthetic resin | Performing Operations; Transporting | 6 | Expired |
| US4663094A | Process for the production of a cupola shaped plastic piece with a flat rim | Performing Operations; Transporting | 5 | Expired |
| US4219910A | Clamping device for sheet materials | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4948548A | Method of forming reducing formation of impressions from the forming tool | Performing Operations; Transporting | 3 | Expired |
| US4278723A | Shaped body of extruded acrylic glass | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4188425A | Double-walled shaped plastic articles | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4038360A | Method for contouring the surface of thermoplastic synthetic resins | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.