KEYENCE CORPORATION
503Patents
413Active
503Granted
61Portfolio score
Filing activity: Jun 24, 1986 → Aug 1, 2024 · 72 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6983886B2 | Two-dimensional code reader setting method, two-dimensional code reader, two dimensional code reader setting program and computer readable recording medium | Physics | 155 | Expired |
| US5750974A | Lighting apparatus having light emitting diodes arranged in a plurality of planes on a printed circuit board | Emerging Cross-Sectional Technologies | 124 | Expired |
| US7059184B2 | Split-flow-type flow sensor device | Physics | 76 | Expired |
| US6704441B1 | Inspection system | Physics | 49 | Expired |
| US6137408A | Controller for plural area sensors | Physics | 49 | Expired |
| US6211784A | Object detector and object detector system | Physics | 49 | Expired |
| US5259729A | Propeller blade tip path plane inclining device | Human Necessities | 48 | Expired |
| US6902114B2 | Setting bar code of optical information reader, method for generating the same, method for changing setting of optical information reader and computer-readable medium | Physics | 39 | Expired |
| US5734412A | Scan type laser marking device including a scanning speed setting a device | Electricity | 38 | Expired |
| US6653638B2 | Ion generating apparatus | Electricity | 37 | Expired |
| US6979814B2 | Multi-optical-path photoelectric safety apparatus | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5959282A | Enhanced error handling apparatus, method, and program product for barcode readers | Physics | 28 | Expired |
| US6414603B1 | Method for displaying state of multi-optical-axis photoswitch and multi-optical-axis photoswitch adapted to the method | Physics | 28 | Expired |
| US6894623B2 | Display monitor for multi-optical-path photoelectric safety apparatus and multi-optical-path photoelectric safety apparatus including a display monitor | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US7375944B2 | Ionizer and discharge electrode assembly to be assembled therein | Electricity | 25 | Expired |
| US6239423A | Area sensor with optical axis having narrow angular characteristics | Physics | 22 | Expired |
| US7948733B2 | Static eliminator | Electricity | 22 | Active |
| US8330095B2 | Safety photoelectric switch | Physics | 21 | Active |
| US6124936A | Color discrimination system | Physics | 21 | Expired |
| US4741000A | Photoelectronic switch | Electricity | 21 | Expired |
| US8134821B2 | Static eliminator and discharge electrode unit built therein | Electricity | 21 | Active |
| US7649728B2 | Electricity removal apparatus | Electricity | 21 | Active |
| US7489410B2 | Optical displacement meter, optical displacement measuring method, optical displacement measuring program, computer-readable recording medium, and device that records the program | Physics | 20 | Active |
| US6744617B2 | Ionizing apparatus and discharge electrode bar for the same | Electricity | 18 | Expired |
| US7098441B2 | Photoelectric sensor | Physics | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.