Robert Longman
11Patents
7h-index
12Co-inventors
63Inventor score
Filing activity: Feb 11, 1985 → Nov 11, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4703469A | Optical data recording using radiation of different characteristics | Physics | 29 | Expired |
| US5406540A | Optical disk recording performance | Physics | 13 | Expired |
| US4928132A | Optical data storage medium | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5008687A | Data storage medium | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4657780A | Manufacture of diffraction gratings | Physics | 8 | Expired |
| US5137617A | Optical disk manufacture | Physics | 7 | Expired |
| US4866696A | Pre-formatted moth-eye type optical data storage member and method | Physics | 7 | Expired |
| US4724444A | Data storage medium | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4802736A | Interferometers | Physics | 2 | Expired |
| US9385391B2 | Fuel cells | Emerging Cross-Sectional Technologies | 1 | Active |
| US10518228B2 | Device and method for generating bubbles, use of the device and a fuel cell comprising the device | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.