Takahiro Suyama
47Patents
11h-index
21Co-inventors
71Inventor score
Filing activity: Apr 20, 1983 → Apr 18, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4567060A | Method of producing a semiconductor laser device | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4745612A | Separate confinement heterostructure semiconductor laser device | Electricity | 34 | Expired |
| US4750183A | Semiconductor laser device | Electricity | 32 | Expired |
| US4845724A | Semiconductor laser device having optical guilding layers of unequal resistance | Electricity | 22 | Expired |
| US4984244A | Semiconductor laser device | Electricity | 20 | Expired |
| US5022036A | Semiconductor laser device | Electricity | 16 | Expired |
| US4545057A | Window structure of a semiconductor laser | Electricity | 14 | Expired |
| US4569721A | Method for the production of semiconductor lasers | Electricity | 14 | Expired |
| US4787089A | Quantum well semiconductor laser device | Electricity | 13 | Expired |
| US4905246A | Semiconductor laser device | Electricity | 12 | Expired |
| US6055255A | Semiconductor laser device and method for producing the same | Electricity | 11 | Expired |
| US4694460A | Stripe geometry semiconductor laser device | Electricity | 11 | Expired |
| US4860297A | Quantum well semiconductor laser device | Performing Operations; Transporting | 11 | Expired |
| US4746181A | Optical semiconductor device | Electricity | 11 | Expired |
| US4852111A | Semiconductor laser device | Electricity | 11 | Expired |
| US4887274A | Deterioration-resistant superlattice semiconductor laser device | Electricity | 11 | Expired |
| US4894836A | Semiconductor device | Electricity | 11 | Expired |
| US4637029A | Semiconductor laser | Electricity | 10 | Expired |
| US4901326A | Semiconductor laser device | Electricity | 9 | Expired |
| US4841533A | Semiconductor laser device having a graded index waveguide | Electricity | 9 | Expired |
| US5001522A | Optical semiconductor device | Physics | 9 | Expired |
| US5027169A | Semiconductor device with substrate misorientation | Electricity | 8 | Expired |
| US4835783A | Semiconductor laser | Electricity | 8 | Expired |
| US4691214A | Optical semiconductor apparatus | Electricity | 8 | Expired |
| US4862470A | Semiconductor laser device | Electricity | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.