OPPAMA INDUSTRY CO., LTD.
24Patents
7Active
24Granted
50Portfolio score
Filing activity: Dec 8, 1989 → Jan 25, 2022 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5811908A | Magneto electric generator rotor and an implement for removing this rotor | Emerging Cross-Sectional Technologies | 50 | Expired |
| US6802284B2 | Fuel injection device and air-fuel mixture generating device provided with fuel injection device | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6467147B2 | Magneto electric generator rotor and an implement for removing this rotor | Emerging Cross-Sectional Technologies | 5 | Expired |
| US9726095B2 | Engine driven working machine | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US6023828A | Magneto electric generator rotor and an implement for removing this rotor | Emerging Cross-Sectional Technologies | 5 | Expired |
| USD366003S | Engine tachometer | General | 4 | Expired |
| US6902318B2 | Thermometer for engine of vehicle | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6584957B2 | Contactless ignition system for internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5903079A | Rotor of rotating equipment | Electricity | 3 | Expired |
| US5617373A | Time totaling meter and unit of the same for internal combustion engine | Physics | 3 | Expired |
| US6814056B2 | Contactless ignition system for internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Expired |
| USD331028S | Engine tachometer | General | 2 | Expired |
| US6354522B2 | Electrostatic sprayer | Performing Operations; Transporting | 2 | Expired |
| US6873073B2 | Magneto rotor | Electricity | 1 | Expired |
| USD331026S | Engine tachometer | General | 1 | Expired |
| US7726181B2 | Ignition timing measuring and display device of internal combustion engine | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7913547B2 | Engine rotating meter | Physics | 1 | Active |
| USD331027S | Engine tachometer | General | 1 | Expired |
| US8161943B2 | Non-contact ignition control device of internal combustion engine | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11835022B2 | Engine working apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US11761415B2 | Ignition coil unit | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US6574085B1 | Power supply apparatus for electrostatic charging and method for same | Electricity | 0 | Expired |
| USD327853S | Ignition checker | General | 0 | Expired |
| US10273925B2 | Two-stroke internal combustion engine | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.