Hiroshi Iwata
322Patents
34h-index
265Co-inventors
93Inventor score
Filing activity: Oct 23, 1973 → Jan 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5427087A | Structure of the distal end portion of an endoscope | Physics | 320 | Expired |
| US5725477A | Front end structure of endoscope | Human Necessities | 194 | Expired |
| US4270853A | Sound-recording instant-printing film and camera therefor | Emerging Cross-Sectional Technologies | 161 | Expired |
| US5725474A | Front end structure of endoscope | Human Necessities | 158 | Expired |
| US5725476A | Front end structure of endoscope | Human Necessities | 147 | Expired |
| US6288429A | Semiconductor device | Electricity | 123 | Expired |
| US7050337B2 | Writing control method and writing control system of semiconductor storage device, and portable electronic apparatus | Physics | 120 | Expired |
| US5213628A | Photovoltaic device | Emerging Cross-Sectional Technologies | 100 | Expired |
| US6927463B2 | Semiconductor device and method for fabricating the same | Electricity | 98 | Expired |
| US5454366A | Endoscope distal end with folded circuit board | Electricity | 89 | Expired |
| US4431288A | Camera with liquid crystal aperture control means | Physics | 85 | Expired |
| US8872214B2 | Rod-like light-emitting device, method of manufacturing rod-like light-emitting device, backlight, illuminating device, and display device | Electricity | 77 | Active |
| US5670889A | Probe card for maintaining the position of a probe in high temperature application | Physics | 74 | Expired |
| US4596449A | Zoom lens apparatus | Physics | 73 | Expired |
| US5705828A | Photovoltaic device | Emerging Cross-Sectional Technologies | 71 | Expired |
| US4710106A | Volume controlling device for variable volume pump | Mechanical Engineering; Lighting; Heating | 69 | Expired |
| US7405974B2 | Semiconductor memory device, page buffer resource assigning method and circuit therefor, computer system and mobile electronic device | Physics | 60 | Expired |
| US7187043B2 | Memory function body, particle forming method therefor and, memory device, semiconductor device, and electronic equipment having the memory function body | Electricity | 58 | Expired |
| US5221365A | Photovoltaic cell and method of manufacturing polycrystalline semiconductive film | Emerging Cross-Sectional Technologies | 57 | Expired |
| US5746695A | Front end structure of endoscope | Human Necessities | 56 | Expired |
| US5960319A | Fabrication method for a semiconductor device | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5455430A | Photovoltaic device having a semiconductor grade silicon layer formed on a metallurgical grade substrate | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4738330A | Hydraulic drive system for use with vehicle power steering pump | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5370747A | Photovoltaic device | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4082984A | Electric flash device with printed coil transformer | Electricity | 41 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.