Hans Frei
16Patents
6h-index
19Co-inventors
63Inventor score
Filing activity: Aug 24, 1984 → Mar 8, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5622099A | Brewing head of an espresso maker | Human Necessities | 34 | Expired |
| US4681028A | Apparatus for the preparation of hot beverages, particularly a coffee machine | Human Necessities | 31 | Expired |
| US4892186A | Clock conveyor provided with a plurality of entrainment members | Performing Operations; Transporting | 17 | Expired |
| US4659023A | Process and an apparatus for the proportioning of coffee powder in a coffee machine | Human Necessities | 9 | Expired |
| US9023907B2 | Flexible polyurethane foam | Chemistry; Metallurgy | 8 | Active |
| US5277004A | Apparatus and method for reinforcing swimming pool wall structures | Fixed Constructions | 8 | Expired |
| US7138077B2 | Process and installation for the production of foam in a continuous slabstock foam process | Performing Operations; Transporting | 6 | Expired |
| US4795105A | Package support device for the intermediate storage of wound-up printed products, such as newspapers, periodicals and the like | Performing Operations; Transporting | 6 | Expired |
| US6695028B1 | Method and apparatus for providing text on printed products | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6204325A | Compact, transparent polyisocyanate polyaddition products | Chemistry; Metallurgy | 4 | Expired |
| US5996987A | Device for feeding printed product to a further processing point | Performing Operations; Transporting | 4 | Expired |
| US4738354A | Conveying device | Performing Operations; Transporting | 3 | Expired |
| US6581752B2 | Method and device for splitting-up a stream of piece goods | Performing Operations; Transporting | 3 | Expired |
| US4993653A | Apparatus for rotatably supporting a hollow, substantially cylindrical winding core, and winding core for supporting a coil of flexible, substantially flat products, especially printed products | Performing Operations; Transporting | 3 | Expired |
| US6270029A | Spiral storage | Physics | 0 | Expired |
| US7850158B2 | Method and device for supplying, opening and depositing folded printed products | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.