Seiichi Yamada
13Patents
7h-index
41Co-inventors
66Inventor score
Filing activity: Jul 14, 1975 → Jun 5, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6608562B1 | Vital signal detecting apparatus | Emerging Cross-Sectional Technologies | 242 | Expired |
| US4313026A | Multilayer circuit boards | Electricity | 32 | Expired |
| US4045412A | Alumina substrate and method of manufacturing same | Electricity | 20 | Expired |
| US4816949A | Magnetic head containing amorphous alloy and crystallizable glass | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4794483A | Magnetic head having layers of amorphous magnetic alloy bonded together with a glass containing vandium oxide phosphorus oxide and antimony oxide | Physics | 11 | Expired |
| US5519555A | Magnetic head including PbO-V.sub.2 O.sub.5 -P.sub.2 O.sub.5 system glass bonding | Physics | 7 | Expired |
| US4217337A | Process for manufacturing an alumina substrate by acid purifying a prefired substrate before final firing | Chemistry; Metallurgy | 7 | Expired |
| US5764129A | Ceramic resistor, production method thereof, neutral grounding resistor and circuit breaker | Electricity | 5 | Expired |
| US4565907A | Ignition distributor for internal combustion engine | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US8491490B2 | Method and apparatus of analyzing respiratory signals corresponding to changes in subject's loads applied to bed | Human Necessities | 3 | Active |
| US7679482B2 | Inductor | Electricity | 2 | Active |
| US4581501A | Ignition distributor for internal combustion engine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US5614138A | Method of fabricating non-linear resistor | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.