FIGARO ENGINEERING INC.
45Patents
17Active
45Granted
41Portfolio score
Filing activity: Apr 5, 1983 → Jul 17, 2020 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4938928A | Gas sensor | Physics | 44 | Expired |
| US4718991A | Proton conductor gas sensor and method of detecting gas using proton conductor gas sensor | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5088314A | Gas detecting method and system | Physics | 29 | Expired |
| US5320577A | Air conditioner control device | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4816800A | Exhaust gas sensor | Physics | 22 | Expired |
| US9182366B2 | Gas detection apparatus and gas detection method | Physics | 20 | Active |
| US5517182A | Method for CO detection and its apparatus | Physics | 19 | Expired |
| US5837886A | Gas sensor | Physics | 17 | Expired |
| US4731226A | Gas sensor | Physics | 15 | Expired |
| US4701739A | Exhaust gas sensor and process for producing same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5759367A | Gas sensor | Physics | 14 | Expired |
| US6128945A | Gas detecting method and its detector | Physics | 11 | Expired |
| US9939404B2 | CO sensor having electromotive force response | Physics | 11 | Active |
| US4958513A | Gas detecting device | Physics | 9 | Expired |
| US5006828A | Exhaust gas sensor and process for producing same | Physics | 9 | Expired |
| US4658632A | Sensor | Physics | 9 | Expired |
| US5493897A | Gas sensor | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4827154A | Control system for air cleaner | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8535498B2 | Electrochemical gas sensor and method for clamping the same | Physics | 7 | Active |
| US6055849A | Gas detector and its adjusting method | Physics | 5 | Expired |
| US4459577A | Gas sensor | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7033482B2 | Self-diagnostic method for electrochemical gas sensor and gas detecting device | Physics | 4 | Expired |
| US7090755B2 | Gas detecting device with self-diagnosis for electrochemical gas sensor | Physics | 4 | Expired |
| US5466483A | Method for producing a silica mask on metal oxide surface | Chemistry; Metallurgy | 3 | Expired |
| US4575441A | Exhaust gas sensor and process for producing same | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.