Toshiaki Hashizume
89Patents
15h-index
50Co-inventors
87Inventor score
Filing activity: Oct 21, 1992 → Mar 29, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5865521A | Projection-type display apparatus | Electricity | 70 | Expired |
| US5743610A | Projection-type display apparatus | Electricity | 66 | Expired |
| US5418586A | Projection type liquid crystal projector | Electricity | 35 | Expired |
| US5651599A | Projection type liquid crystal projector | Electricity | 35 | Expired |
| US5555622A | Method of manufacturing a heat transfer small size tube | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6000802A | Projection-type display apparatus | Electricity | 30 | Expired |
| US6394607B1 | Polarized light separation device, method of fabricating the same and projection display apparatus using the polarized light separation device | Electricity | 30 | Expired |
| US6092901A | Polarizing illumination device and projection display device | Electricity | 26 | Expired |
| US6843277B2 | Duct and electronic apparatus having the duct | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5988818A | Projection type liquid crystal projector | Electricity | 24 | Expired |
| US6273569A | Illuminating optical system and projector | Physics | 19 | Expired |
| US6154320A | Polarizing conversion device, polarizing illuminations device, and display apparatus and projector using the devices | Electricity | 19 | Expired |
| US6089718A | Projection display device | Electricity | 16 | Expired |
| US5986809A | Polarization conversion element, polarization illuminator, display using the same illuminator, and projection type display | Electricity | 16 | Expired |
| US7008180B2 | Axial-flow fan and projector provided with the same | Physics | 15 | Expired |
| US6109752A | Lighting device and projector | Electricity | 15 | Expired |
| US6854848B2 | Optical device and projector | Electricity | 15 | Expired |
| US5909944A | Projection-type display apparatus | Electricity | 14 | Expired |
| US6935753B2 | Projector | Electricity | 14 | Expired |
| US6375328B2 | Optical modulation element and projector | Electricity | 14 | Expired |
| US6411449B1 | Light-selective prism, projection display apparatus using the same, and method of manufacturing light-selective prism | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6109751A | Projector and lighting optical system therefor | Electricity | 12 | Expired |
| US6072635A | Dichroic prism and projection display apparatus | Electricity | 11 | Expired |
| US6523958B2 | Optical component and projector using the same | Physics | 11 | Expired |
| US6342971B1 | Projector using a light-selective prism | Emerging Cross-Sectional Technologies | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.