KOITO MANUFACTURING CO., LTD.
2,320Patents
1,287Active
2,320Granted
57Portfolio score
Filing activity: Mar 1, 1974 → Sep 10, 2024 · 303 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5426294A | Glare sensor for a vehicle | Performing Operations; Transporting | 601 | Expired |
| US4733335A | Vehicular lamp | Emerging Cross-Sectional Technologies | 499 | Expired |
| US5580156A | Marker apparatus | Emerging Cross-Sectional Technologies | 230 | Expired |
| US7501749B2 | Vehicle lamp using emitting device for suppressing color tone difference according to illumination conditions | Electricity | 178 | Active |
| US5609652A | Method of manufacturing a synthetic resin part integrally formed with metal members | Emerging Cross-Sectional Technologies | 140 | Expired |
| US6411022B1 | Vehicle lamp unit | Emerging Cross-Sectional Technologies | 138 | Expired |
| US4902103A | Color liquid-crystal display unit with electrodes interleaved in vertical and horizontal directions | Physics | 136 | Expired |
| US4951179A | Lighting device for vehicle | Emerging Cross-Sectional Technologies | 115 | Expired |
| US5707129A | Vehicular headlamp producing low beam having cut line controlled in accordance with condition of curved road | Emerging Cross-Sectional Technologies | 114 | Expired |
| US5193895A | Warning light | Emerging Cross-Sectional Technologies | 113 | Expired |
| US5220235A | Discharge lamp device | Electricity | 112 | Expired |
| US7726856B2 | Vehicular marker lamp | Mechanical Engineering; Lighting; Heating | 107 | Active |
| US5453855A | Liquid crystal display device backlit by LED's coupled to printed circuit board | Physics | 102 | Expired |
| US7164235B2 | Vehicular lamp | Emerging Cross-Sectional Technologies | 85 | Expired |
| US5351439A | Power window apparatus having improved safety device | Fixed Constructions | 72 | Expired |
| US7073931B2 | Vehicular headlamp and optical unit | Emerging Cross-Sectional Technologies | 72 | Expired |
| US5142203A | Lighting circuit for high-pressure discharge lamp for vehicles | Emerging Cross-Sectional Technologies | 67 | Expired |
| US5746497A | Automotive signal lamps | Emerging Cross-Sectional Technologies | 67 | Expired |
| US6811277B2 | Vehicle lamp | Mechanical Engineering; Lighting; Heating | 61 | Expired |
| US5422551A | Safety device and method for power window | Electricity | 60 | Expired |
| US4965950A | Display device for automotive mark plate | Performing Operations; Transporting | 60 | Expired |
| US5379196A | Projection headlamp for vehicles | Performing Operations; Transporting | 59 | Expired |
| US5212428A | Lighting circuit for vehicular discharge lamp | Emerging Cross-Sectional Technologies | 59 | Expired |
| US6343869B1 | Light unit for vehicle | Performing Operations; Transporting | 59 | Expired |
| US4689725A | Aiming device for automobile head lamp | Performing Operations; Transporting | 57 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.