NIDEK CO., LTD.
835Patents
400Active
835Granted
54Portfolio score
Filing activity: Sep 13, 1977 → Mar 13, 2024 · 140 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5684562A | Ophthalmic apparatus | Human Necessities | 186 | Expired |
| US5810765A | Irrigation/aspiration apparatus | Human Necessities | 131 | Expired |
| US6511454B1 | Irrigation/aspiration apparatus and irrigation/aspiration cassette therefore | Human Necessities | 118 | Expired |
| US5971978A | Laser treatment apparatus | Human Necessities | 89 | Expired |
| US6588902B2 | Ophthalmic apparatus | Human Necessities | 86 | Expired |
| US6585723B1 | Corneal surgery apparatus | Human Necessities | 84 | Expired |
| US6641578B2 | Laser treatment apparatus | Human Necessities | 76 | Expired |
| US5226903A | Apparatus for ophthalmic operation using photocoagulation by a laser beam | Human Necessities | 71 | Expired |
| US5333412A | Apparatus for and method of obtaining processing information for fitting lenses in eyeglasses frame and eyeglasses grinding machine | Performing Operations; Transporting | 66 | Expired |
| US5507799A | Ablation apparatus for ablating an object by laser beam | Human Necessities | 66 | Expired |
| US6257722A | Ophthalmic apparatus | Human Necessities | 66 | Expired |
| US5445633A | Ablation apparatus for ablating a cornea by laser beam | Human Necessities | 66 | Expired |
| US6652511B1 | Laser treatment apparatus | Human Necessities | 64 | Expired |
| US5300063A | Ophthalmic laser apparatus | Human Necessities | 61 | Expired |
| US4477159A | Photocoagulator | Human Necessities | 60 | Expired |
| US5562656A | Ophthalmic apparatus | Human Necessities | 59 | Expired |
| US5252999A | Laser apparatus including binocular indirect ophthalmoscope | Human Necessities | 59 | Expired |
| US6235014A | Laser treatment apparatus | Human Necessities | 58 | Expired |
| US6652512B2 | Laser treatment apparatus | Human Necessities | 58 | Expired |
| US5463430A | Examination apparatus for examining an object having a spheroidal reflective surface | Human Necessities | 57 | Expired |
| US6780166B2 | Irrigation/aspiration apparatus | Human Necessities | 57 | Expired |
| US5442487A | Ophthalmic photocoagulating apparatus using a laser diode and a lens system for the apparatus | Electricity | 56 | Expired |
| US5637109A | Apparatus for operation on a cornea using laser-beam | Human Necessities | 56 | Expired |
| US6117129A | Laser treatment apparatus | Human Necessities | 54 | Expired |
| US5470329A | Operation apparatus for correcting ametropia with laser beam | Human Necessities | 52 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.