Robert B. Nilsen
29Patents
20h-index
13Co-inventors
78Inventor score
Filing activity: Sep 28, 1994 → Sep 19, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6356389B1 | Subwavelength optical microstructure light collimating films | Physics | 189 | Expired |
| US6891677B2 | Subwavelength optical microstructure light-redirecting films | Physics | 107 | Expired |
| US5565151A | Retroreflective prism structure with windows formed thereon | Emerging Cross-Sectional Technologies | 87 | Expired |
| US5840406A | Retroreflective prism structure with windows formed thereon | Emerging Cross-Sectional Technologies | 60 | Expired |
| US6570710B1 | Subwavelength optical microstructure light collimating films | Physics | 54 | Expired |
| US6967053B1 | Durable, open-faced retroreflective prismatic construction | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5780140A | Retroreflective microprismatic material with top face curvature and method of making same | Emerging Cross-Sectional Technologies | 49 | Expired |
| US6120636A | Apparatus and method for producing retroreflective material having printed patterns thereon | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6036322A | Multi-orientation retroreflective structure | Physics | 47 | Expired |
| US6770225B2 | Textured retroreflective prism structures and molds for forming same | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5558740A | Method and apparatus for producing seamless retroreflective sheeting | Emerging Cross-Sectional Technologies | 44 | Expired |
| US7364314B2 | Optical structures | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5657162A | Retroreflective articles with multiple size prisms in multiple locations | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6258443A | Textured retroreflective prism structures and molds for forming same | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7230764B2 | Differentially-cured materials and process for forming same | Physics | 28 | Expired |
| US6206525A | Miniature micro prism retroreflector | Physics | 26 | Expired |
| US7506987B2 | Two-sided corner-cube retroreflectors and methods of manufacturing the same | Physics | 26 | Active |
| US6119751A | Apparatus and method for producing retroreflective material having printed patterns thereon | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5643400A | Method and apparatus for producing seamless retroreflective sheeting | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6139158A | Retroreflective articles with multiple size prisms in multiple locations | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7703931B2 | Two-sided corner-cube retroreflectors and methods of manufacturing the same | Physics | 17 | Active |
| US7330315B2 | Light-redirecting optical structures | Physics | 14 | Expired |
| US8033671B1 | Retroreflective structures having a helical geometry | Emerging Cross-Sectional Technologies | 11 | Active |
| US6877866B2 | Multi-orientation retroreflective structure | Physics | 8 | Expired |
| US7262856B2 | Microstructured optical device for remote chemical sensing | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.