Haruhiko Tabuchi
35Patents
12h-index
21Co-inventors
77Inventor score
Filing activity: Jun 18, 1991 → May 23, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5481629A | Hybrid optical IC with optical axes at different levels | Physics | 124 | Expired |
| US5671315A | Optical parts fixing apparatus and method of manufacturing the same | Physics | 80 | Expired |
| US5764832A | Integrated semiconductor optical devices and method of manufacture employing substrate having alignment groove | Electricity | 71 | Expired |
| US5644667A | Integrated semiconductor optical devices and method of manufacture employing substrate having alignment groove | Electricity | 67 | Expired |
| US5611006A | Hybrid type integrated optical device having double-layered substrate | Physics | 63 | Expired |
| US5987046A | Optical semiconductor device and a method of manufacturing the same | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6112002A | Optical coupler optically coupling a light beam of a semiconductor laser source with a single mode optical waveguide or fiber | Physics | 48 | Expired |
| US5909524A | Optical coupling structure and a fabrication process thereof | Physics | 48 | Expired |
| US5787106A | Optical semiconductor device for changing a beam diameter | Electricity | 30 | Expired |
| US6238943A | Optical semiconductor device and a method of manufacturing the same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5255276A | Driver circuit of a tunable laser diode | Electricity | 17 | Expired |
| US6085000A | Wavelength division multiplexing optical device and manufacturing method therefor | Physics | 13 | Expired |
| US5757999A | Optical device | Electricity | 12 | Expired |
| US5388106A | Tunable optical source for producing a coherent optical beam with a wide range of wavelength tuning | Electricity | 12 | Expired |
| US6978061B1 | Optical switching device | Physics | 9 | Expired |
| US5126875A | Semiconductor optical device having a variable refractive index profile | Physics | 9 | Expired |
| US6810167B2 | Wavelength division demultiplexing apparatus | Physics | 7 | Expired |
| US7400793B2 | Optical device with slab waveguide and channel waveguides on substrate | Physics | 7 | Active |
| US6038242A | Multiwavelength light source | Electricity | 7 | Expired |
| US6552366B1 | Optical transmitting and receiving device and the manufacturing method | Electricity | 5 | Expired |
| US7386206B2 | Optical device with slab waveguide and channel waveguides on substrate | Physics | 5 | Expired |
| US7020358B2 | Wavelength division demultiplexing apparatus | Physics | 4 | Expired |
| US6920264B2 | Arrayed waveguide grating type wavelength division demultiplexer | Physics | 4 | Expired |
| US7313301B2 | Optical fiber device, optical monitor and optical switch | Physics | 3 | Expired |
| US5200968A | Laser amplifier for amplifying optical waves without saturation | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.