NITTA CORPORATION
228Patents
99Active
228Granted
50Portfolio score
Filing activity: May 3, 1973 → May 4, 2023 · 22 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6598006B1 | Data input device using a palatal plate | Human Necessities | 132 | Expired |
| US5977685A | Polyurethane elastomer actuator | Emerging Cross-Sectional Technologies | 131 | Expired |
| US6373265B1 | Electrostatic capacitive touch sensor | Electricity | 125 | Expired |
| US6530283B2 | Force sensor | Electricity | 113 | Expired |
| US4774502A | Environmental abnormality detection apparatus | Physics | 69 | Expired |
| US4755797A | Fire alarm apparatus | Physics | 66 | Expired |
| US6011478A | Smoke sensor and monitor control system | Physics | 64 | Expired |
| US6958614B2 | Capacitance type sensor and method for manufacturing same | Emerging Cross-Sectional Technologies | 63 | Expired |
| US4790863A | Air cleaner | Performing Operations; Transporting | 59 | Expired |
| US4668939A | Apparatus for monitoring disturbances in environmental conditions | Physics | 57 | Expired |
| US7112755B2 | Pressure-sensitive sensor | Electricity | 49 | Expired |
| US6974022B2 | Beaded conveyor belt | Performing Operations; Transporting | 45 | Expired |
| US4658243A | Surveillance control apparatus for security system | Physics | 36 | Expired |
| US7441470B2 | Strain gauge type sensor and strain gauge type sensor unit using the same | Physics | 28 | Expired |
| US4469953A | Combination ionization and photoelectric smoke detector | Physics | 27 | Expired |
| US6555024B2 | Pressure-sensitive conductive ink composition | Emerging Cross-Sectional Technologies | 26 | Expired |
| USD382217S | Fire detector | General | 25 | Expired |
| US4947162A | Terminal device for a monitoring and control system | Electricity | 24 | Expired |
| USD426482S | Fire detector | General | 24 | Expired |
| US4524351A | Smoke detector | Physics | 24 | Expired |
| USD319798S | Fire detector | General | 23 | Expired |
| US4525700A | Fire alarm system | Physics | 23 | Expired |
| USD651926S1 | Fire detector | General | 23 | Expired |
| US4538137A | Fire detector | Physics | 23 | Expired |
| US4924417A | Environmental abnormality alarm apparatus | Physics | 23 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.