Hiroshi Sekiguchi
65Patents
12h-index
75Co-inventors
87Inventor score
Filing activity: Apr 7, 1982 → Apr 26, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6726859B2 | Fresnel lens, screen, image display device, lens mold manufacturing method and lens manufacturing method | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6272155A | Fiber bundle and laser apparatus using the fiber bundle of manufacturing the same | Electricity | 27 | Expired |
| US4922502A | Solid-state laser device comprising a plurality of excitation units selectively energized | Electricity | 24 | Expired |
| US4978890A | Fluorescent lamp device | Electricity | 24 | Expired |
| US5304247A | Apparatus for depositing compound semiconductor crystal | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4752116A | Transmission type projection screen | Physics | 18 | Expired |
| US6459068B1 | Laser device, laser machining device and optical amplifier | Electricity | 16 | Expired |
| US4646223A | Drive control system for electric equipment | Physics | 16 | Expired |
| US7478755B2 | Communication system, communication apparatus and method, recording medium, and program | Electricity | 15 | Active |
| US7116476B2 | Fresnel lens, screen, image displaying device, lens forming mold manufacturing method and lens manufacturing method | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4393956A | Draining device used in a car-muffler | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6052392A | Laser apparatus having an optical guide formed in a conglomerate form with long and continuous optical fibers | Electricity | 13 | Expired |
| US7835078B2 | Reflecting screen, method of manufacturing the same, and reflection-type projection system | Physics | 12 | Active |
| US5436194A | Stripe laser diode having an improved efficiency for current confinement | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7072109B2 | Projection screen and projection display | Physics | 9 | Expired |
| US4761761A | Multitype characters processing method and terminal device with multiple display buffers | Physics | 9 | Expired |
| US6707605B2 | Fresnel lens sheet and transmission-type projection screen | Physics | 8 | Expired |
| US5621748A | Stripe laser diode having an improved efficiency for current confinement | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6683892B1 | Laser device, method of producing the same and composite optical medium for use in producing the same | Electricity | 7 | Expired |
| US4727511A | Multitype characters processing method and terminal device | Physics | 6 | Expired |
| US4514675A | Electronic damper for pulse motor | Electricity | 6 | Expired |
| US5034953A | Laser device capable of making a temperature distribution uniform in a slab-shaped laser medium | Electricity | 5 | Expired |
| US8550687B2 | Light guide plate, surface light source device and transmissive display apparatus | Physics | 4 | Active |
| US6697409B1 | Beam distributor of laser apparatus capable of efficiently introducing pumping beam into laser medium | Electricity | 4 | Expired |
| US7317572B2 | Fresnel lens sheet, rear projection screen and rear projection display | Physics | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.