Tetsuo Ohara
17Patents
8h-index
9Co-inventors
65Inventor score
Filing activity: Mar 5, 1990 → Apr 4, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6639686B1 | METHOD OF AND APPARATUS FOR REAL-TIME CONTINUAL NANOMETER SCALE POSITION MEASUREMENT BY BEAM PROBING AS BY LASER BEAMS AND THE LIKE OF ATOMIC AND OTHER UNDULATING SURFACES SUCH AS GRATINGS OR THE LIKE RELATIVELY MOVING WITH RESPECT TO THE PROBING BEAMS | Physics | 72 | Expired |
| US7587110B2 | Multicore optical fiber with integral diffractive elements machined by ultrafast laser direct writing | Physics | 66 | Active |
| US7376307B2 | Multimode long period fiber bragg grating machined by ultrafast laser direct writing | Electricity | 64 | Expired |
| US5050968A | Optical shutter using magneto-optical materials | Physics | 19 | Expired |
| US7430484B2 | Signal processing method and apparatus for use in real-time subnanometer scale position measurements with the aid of probing sensors and beams scanning periodically undulating surfaces such as gratings and diffraction patterns generated thereby, and the like | Physics | 17 | Active |
| US5744799A | Apparatus for and method of real-time nanometer-scale position measurement of the sensor of a scanning tunneling microscope or other sensor scanning atomic or other undulating surfaces | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5589686A | Method of an apparatus for real-time nanometer-scale position measurement of the sensor of a scanning tunneling microscope or other sensor scanning atomic or other undulating surfaces | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7366378B2 | Ultrafast laser machining system and method for forming diffractive structures in optical fibers | Physics | 8 | Expired |
| US6840886B2 | Method and apparatus for a low cost, high speed, and compact nanometer precision motion stage using friction drive and flexure hinge | Electricity | 5 | Expired |
| US9464882B2 | Interferometer with continuously varying path length measured in wavelengths to the reference mirror | Physics | 2 | Active |
| US7532791B2 | Ultrafast laser machining system and method for forming diffractive structures in optical fibers | Physics | 1 | Active |
| US7294843B2 | Method and apparatus for determining an optimal gap distance between an optical fiber and an optical device | Physics | 0 | Expired |
| US5116281A | Rotational speed switcher | Electricity | 0 | Expired |
| US8455789B2 | Energy collection and power reduction in laser coupling process | Performing Operations; Transporting | 0 | Active |
| US8076608B2 | Energy collection and power reduction in laser coupling process | Performing Operations; Transporting | 0 | Active |
| US7458914B2 | Method and apparatus for a low cost and high force transmission using elastically deformable driving element for friction drive | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US7242829B2 | Method and apparatus for integrated optical fiber sensing with nanometer precision | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.