Ken Sakuma
32Patents
7h-index
35Co-inventors
69Inventor score
Filing activity: Aug 6, 1986 → Feb 8, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7253446B2 | Light emitting device and illumination apparatus | Electricity | 60 | Expired |
| US5676042A | Apparatus for producing fried food product | Human Necessities | 24 | Expired |
| US8148887B2 | Light emitting diode lamp and light emitting device | Emerging Cross-Sectional Technologies | 19 | Active |
| US4732081A | Device for producing fried food | Human Necessities | 18 | Expired |
| US5243898A | Pressurized fryer device | Human Necessities | 16 | Expired |
| US8270789B2 | Optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator | Physics | 9 | Active |
| US8270790B2 | Planar optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator | Physics | 8 | Active |
| US7573190B2 | Light emitting element and lighting instrument | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4985266A | Process for producing fried food | Human Necessities | 5 | Expired |
| US7597821B2 | Oxynitride phosphor and a light emitting device | Electricity | 5 | Active |
| US8227178B2 | Manufacturing method of planar optical waveguide device with grating structure | Physics | 3 | Active |
| US7608862B2 | Light emitting device and a lighting apparatus | Electricity | 3 | Expired |
| US7046872B2 | Optical switch, optical add-drop module, and optical communication system | Physics | 3 | Expired |
| US7402943B2 | Oxynitride phosphor and a light emitting device | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8404133B2 | Manufacturing method of planar optical waveguide device with grating structure | Physics | 3 | Active |
| US6945078B2 | Optical waveguide in the interior of silica glass and method of forming optical waveguide | Chemistry; Metallurgy | 2 | Expired |
| US6741775B2 | Optical switch | Physics | 2 | Expired |
| US7046881B2 | Manufacturing method for optical coupler/splitter and method for adjusting optical characteristics of planar lightwave circuit device | Physics | 2 | Expired |
| US8053970B2 | Light emitting device and illumination device | Emerging Cross-Sectional Technologies | 2 | Active |
| US8057705B2 | Sialon phosphor | Electricity | 2 | Active |
| US7564065B2 | Light emitting device and a lighting apparatus | Electricity | 1 | Active |
| US5417084A | Vacuum concentrating plant | Emerging Cross-Sectional Technologies | 1 | Expired |
| US11018718B1 | Wireless communication device and wireless communication method | Electricity | 1 | Active |
| US8571206B2 | Information transmitting apparatus, information transmitting method, and computer product | Electricity | 1 | Active |
| US11463140B2 | Wireless communication device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.