Jeco Co., Ltd.
52Patents
7Active
52Granted
41Portfolio score
Filing activity: Apr 16, 1974 → Jun 30, 2020 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4571844A | Angle change detector | Physics | 87 | Expired |
| US4872439A | Device for preventing outflow of a fuel vapor from a fuel tank | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4380043A | Apparatus for illuminating instrument pointers | Performing Operations; Transporting | 28 | Expired |
| US5495762A | Pendulum acceleration sensor | Physics | 23 | Expired |
| USD286640S | Printer | General | 22 | Expired |
| US5747897A | Stepping motor having improved construction to reduce parts and facilitate manufacture | Electricity | 21 | Expired |
| US4492029A | Inclinometer | Electricity | 20 | Expired |
| US5600193A | Motor | Electricity | 17 | Expired |
| US4676146A | Fin swinging angle control apparatus | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4008426A | Electronic speed control systems for miniature direct current motors | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4988944A | Cross coil type instrument | Physics | 11 | Expired |
| US5357196A | Circuit for converting a frequency of an input signal so a signal having a digital value corresponding to the frequency | Physics | 11 | Expired |
| US4928060A | Driving circuit of a crossed-coil type instrument using digital data pulse production | Physics | 10 | Expired |
| US5394288A | Actuator | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4913750A | Amorphous magnetic wire | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4604544A | Piezoelectric pressure indicator | Physics | 8 | Expired |
| US4586838A | Compact battery operated printer | Performing Operations; Transporting | 8 | Expired |
| US4584778A | Angle change detector | Physics | 8 | Expired |
| US4293842A | Electronic display device for use in motor cars | Physics | 8 | Expired |
| US4214181A | Self-starting miniature synchronous motors | Electricity | 7 | Expired |
| US5055759A | Servo accelerometer | Physics | 7 | Expired |
| US3931705A | Counter feed mechanism as used in digital clock | Emerging Cross-Sectional Technologies | 7 | Expired |
| US3937910A | Timer having a variable operation period | Electricity | 7 | Expired |
| US4426788A | Inclinometers | Physics | 6 | Expired |
| US4490768A | Apparatus for preventing arc discharge of transfer switch circuit for inductive load | Electricity | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.