Masato Hara
45Patents
10h-index
44Co-inventors
75Inventor score
Filing activity: May 1, 1981 → Mar 29, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4543477A | Safety device for detecting trouble in optical transmission fibers | Physics | 52 | Expired |
| US5838431A | Laser marking device | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5828500A | Optical element inspecting apparatus | Physics | 39 | Expired |
| US5991102A | Beam protecting device | Physics | 35 | Expired |
| US5847822A | Optical element inspecting apparatus | Physics | 35 | Expired |
| US6148097A | Optical member inspecting apparatus and method of inspection thereof | Physics | 25 | Expired |
| US6304669A | Photogrammetric analytical measurement system | Physics | 24 | Expired |
| US5835207A | Optical member inspecting apparatus | Physics | 18 | Expired |
| US5978148A | Beam projecting device | Physics | 15 | Expired |
| US5026978A | Photoelectric switch having pulse driver circuitry | Electricity | 14 | Expired |
| US6717683B1 | Target for photogrammetric analytical measurement system | Physics | 9 | Expired |
| US4883955A | Optical encoder with converging means | Physics | 9 | Expired |
| US5675422A | Facsimile apparatus | Electricity | 9 | Expired |
| US6628803B1 | Device for calculating positional data of standard points of photogrammetric target | Physics | 9 | Expired |
| US6349145B1 | Optical member inspecting apparatus and method of inspection thereof | Physics | 8 | Expired |
| US4678910A | Reference position-detecting device for photoelectric encoder | Physics | 7 | Expired |
| US5315403A | Facsimile apparatus in which input to memory is controlled based upon capacity of external storage device | Electricity | 7 | Expired |
| US6853441B2 | Projection aligner | Physics | 7 | Expired |
| US4486080A | Device for detecting blinking of an eye under examination | Human Necessities | 7 | Expired |
| US6476909B1 | Optical member inspecting apparatus and method of inspection thereof | Physics | 6 | Expired |
| US4633419A | Angle measuring device | Physics | 6 | Expired |
| US4626682A | Angle measuring device | Physics | 6 | Expired |
| US6697513B1 | Optical member inspecting apparatus and method of inspection thereof | Physics | 6 | Expired |
| US4990768A | Electronic apparatus including photoelectric switch | Physics | 6 | Expired |
| US6804386B1 | Optical member inspecting apparatus and method of inspection thereof | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.