Yoichi Oba
12Patents
8h-index
36Co-inventors
68Inventor score
Filing activity: Nov 30, 1973 → Jul 9, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4970354A | Electromagnetic wave shielding circuit and production method thereof | Electricity | 107 | Expired |
| US4001870A | Isolating protective film for semiconductor devices and method for making the same | Electricity | 46 | Expired |
| US4040083A | Aluminum oxide layer bonding polymer resin layer to semiconductor device | Electricity | 32 | Expired |
| US5222307A | Drying method and apparatus therefor | Electricity | 24 | Expired |
| US4219587A | Process for producing pigment-coated phosphors | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4086090A | Formation of pattern using acrylamide-diacetoneacrylamide copolymer | Electricity | 11 | Expired |
| US4206250A | Process for producing pigment-coated phosphors | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4420444A | Process for forming phosphor powder layer | Chemistry; Metallurgy | 9 | Expired |
| US4229312A | Method of manufacturing a paint composite for magnetic films | Physics | 8 | Expired |
| US5066692A | Electromagnetic wave shielding composition comprising epoxy resin and copper particles | Electricity | 6 | Expired |
| US4837050A | Method for producing electrically conductive circuits on a base board | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4684054A | Automatic soldering apparatus and method of using the flux to heat the circuit board | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.