KUBOTA CORPORATION
2,646Patents
1,642Active
2,646Granted
61Portfolio score
Filing activity: Nov 6, 1974 → Feb 7, 2025 · 262 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD529513S1 | Portion of an internal combustion engine | General | 164 | Expired |
| US3997193A | Connector for the use of pipes | Emerging Cross-Sectional Technologies | 147 | Expired |
| US5192456A | Apparatus for treating activated sludge and method of cleaning it | Emerging Cross-Sectional Technologies | 144 | Expired |
| US5482625A | Filtration membrane module | Performing Operations; Transporting | 140 | Expired |
| US4628454A | Automatic running work vehicle | Physics | 139 | Expired |
| US5454423A | Melt pumping apparatus and casting apparatus | Mechanical Engineering; Lighting; Heating | 132 | Expired |
| US5610587A | Theft preventive apparatus having an alarm output device | Emerging Cross-Sectional Technologies | 113 | Expired |
| US5647988A | Method of back-washing submerged-type ceramic membrane separation apparatus | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6038840A | Rear discharge mower unit and lawn tractor | Human Necessities | 98 | Expired |
| US5451317A | Solid-liquid separator | Emerging Cross-Sectional Technologies | 92 | Expired |
| US5656998A | Detector for theft prevention | Emerging Cross-Sectional Technologies | 86 | Expired |
| USD778784S1 | Transport vehicle | General | 85 | Active |
| US4907546A | Air-cooled type cooling system for engine working machine assembly | Mechanical Engineering; Lighting; Heating | 75 | Expired |
| US10143132B2 | Combine | Human Necessities | 71 | Active |
| USD557714S1 | Engine hood for tractor | General | 69 | Expired |
| US4519193A | Fruit harvesting apparatus with television camera and monitor | Physics | 69 | Expired |
| US4756208A | Mid-mount tractor | Emerging Cross-Sectional Technologies | 67 | Expired |
| US4721031A | Tractor cabin | Performing Operations; Transporting | 65 | Expired |
| USD675233S1 | Engine hood for work machine | General | 65 | Active |
| US6199646A | Working vehicle with semicrawlers | Performing Operations; Transporting | 64 | Expired |
| USD497370S1 | Hood portion of an agricultural tractor | General | 64 | Expired |
| USD570382S1 | Engine hood of a tractor | General | 64 | Expired |
| USD558799S1 | Engine hood for tractor | General | 63 | Expired |
| US4663925A | Fruit harvesting robot hand | Performing Operations; Transporting | 63 | Expired |
| USD602047S1 | Tractor | General | 62 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.