Werner Grau
28Patents
10h-index
62Co-inventors
78Inventor score
Filing activity: Jun 12, 1975 → Jun 15, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD321703S | Sunglasses | General | 35 | Expired |
| US6405373B1 | Visor for helmet, particularly a motorcycle helmet | Human Necessities | 28 | Expired |
| US4560456A | Magnetic recording media | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4287225A | Process of making a magnetic recording medium | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4559118A | Magnetic recording media | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4991952A | Pair of glasses with inclinable temples | Physics | 18 | Expired |
| US4835909A | Surface treatment of disk-shaped nickel-plated aluminum substrates | Physics | 15 | Expired |
| US4029249A | Roller system for continuous transport of webs of sheeting | Performing Operations; Transporting | 14 | Expired |
| US5050015A | Method and arrangement for reducing wear in a magnetic storage means | Physics | 11 | Expired |
| US4567108A | Magnetic recording media | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4560624A | Magnetic recording media with a dual protective coating of silicon monoxide and chromium | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7797763B2 | Protective helmet, especially bicycle helmet | Human Necessities | 9 | Active |
| US5084319A | Disk-shaped magnetic recording media, their production and information stores containing these recording media | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4568610A | Magnetic recording media | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5627607A | Spectacles with movable gems | Physics | 7 | Expired |
| US4414287A | Magnetic recording medium and its manufacture | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4619777A | Preparation of a magnetic dispersion | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4275114A | Magnetic recording medium and method of stabilization of chromium dioxide magnetic pigments | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4059716A | Manufacture of gamma-iron(III) oxide | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4534999A | Production of magnetic recording media having a backing coating | Physics | 3 | Expired |
| US4597990A | Preparation of magnetic recording media | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4430362A | Production of magnetic recording media | Chemistry; Metallurgy | 2 | Expired |
| US4891114A | Magnetic recording media | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6705719B2 | Sight piece, in particular for skiing goggles and method for the manufacture thereof | Fixed Constructions | 2 | Expired |
| US5082689A | Production of magnetic recording media | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.