Eiji Otsuka
11Patents
7h-index
17Co-inventors
63Inventor score
Filing activity: Jan 27, 1977 → Feb 25, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5573140A | Metallic vacuum double-walled container | Chemistry; Metallurgy | 51 | Expired |
| US6427880B1 | Plug structure for drinking container | Human Necessities | 21 | Expired |
| US5758205A | Lens barrel | Physics | 18 | Expired |
| US4173615A | Chemical apparatus for corrosive materials | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5588197A | Method of manufacturing metallic vacuum double-walled container | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6648168B2 | Insulated container | Human Necessities | 8 | Expired |
| US5583595A | Lens barrel | Physics | 7 | Expired |
| US5058142A | Clock extracting circuit in digital-line signal receiver | Electricity | 4 | Expired |
| US6668057B1 | Apparatus for receiving tone signal, apparatus for transmitting tone signal, and apparatus for transmitting or receiving tone signal | Electricity | 2 | Expired |
| US5345283A | Lens barrel | Physics | 2 | Expired |
| US4154760A | Process for controlling the temperature during urea synthesis | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.