Shigeru Takagi
22Patents
14h-index
22Co-inventors
81Inventor score
Filing activity: Jul 28, 1975 → Feb 19, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4450682A | Carbon particulates cleaning device for diesel engine | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4535589A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4279864A | Monolithic catalyst converter | Mechanical Engineering; Lighting; Heating | 47 | Expired |
| US4485622A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4695300A | Radial flow type dust collecting filter | Performing Operations; Transporting | 38 | Expired |
| US4523935A | Electrical heater retained in a porous ceramic structure | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4492079A | Method and apparatus for detecting degree of clogging in particle trapping member of internal combustion engine | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4436538A | Filter for cleaning exhaust gases from diesel engine | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4441899A | Dust collecting filter | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4386497A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5455971A | Water-closet bowl automatic flushing system | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7020650B2 | Information processing system for e-mail, information processing method and program storage medium therefor | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4404798A | Exhaust gas cleaning device for internal combustion engine | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4084839A | Gas bag protection apparatus for vehicles | Performing Operations; Transporting | 14 | Expired |
| US4459805A | Combustion burner apparatus | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6846022B2 | Universal joint | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4450681A | Carbon particulates cleaning device for diesel engine | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4528008A | Dust collecting filter | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4540535A | Method for producing a ceramic filter for cleaning exhaust gases from a diesel engine | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5109887A | Multiway valve | Emerging Cross-Sectional Technologies | 6 | Expired |
| USRE29361E | Process for shaping workpiece by electrical discharge and apparatus therefor | General | 0 | Expired |
| US4402655A | Vane pump with symmetrical inclined fluid confinement initiating line | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.