THK CO., LTD.
518Patents
328Active
518Granted
56Portfolio score
Filing activity: Nov 7, 1989 → Sep 14, 2023 · 100 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7819894B2 | Manipulator with multiple degrees of freedom | Human Necessities | 600 | Active |
| USD924955S1 | Autonomous travelling carriage or a replica thereof | General | 64 | Active |
| US5487609A | Slide unit for linear motion | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| US6155717A | Linear movement device and lubricant supplying device used therefor | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6869212B2 | Rotor/stator type homogenizer | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5755516A | Rolling guide apparatus and method of manufacturing movable block of rolling guide apparatus | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6164022A | Three dimensional guide | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US6401867B1 | Lubricant supply system | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US9643323B2 | Robot hand | Performing Operations; Transporting | 26 | Active |
| US7028370B2 | Retracting apparatus, drawer apparatus and sliding door apparatus | Fixed Constructions | 25 | Expired |
| US5993064A | Ball connecting body, and linear guide device and ball screw device utilizing the ball connecting body | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6070479A | Rolling element string and linear guide device and rolling element screw device using the same | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6024490A | Linear guide device | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| USD664169S1 | Linear actuator | General | 24 | Active |
| US5988007A | Ball screw apparatus | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6352367B1 | Spacer for liner motion apparatus and liner motion apparatus provided with spacer | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6155716A | Guide apparatus for biaxial shifting motion and uniaxial turning motion | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6082210A | Ball connecting body and ball screw apparatus using the same | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6132093A | Linear motion guiding apparatus | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5554899A | Electric Actuator | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5380099A | Linear bearing and its production method | Emerging Cross-Sectional Technologies | 20 | Expired |
| USD975155S1 | Robot arm apparatus | General | 19 | Active |
| US6705430B2 | Dust preventing structure of guide unit | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US7456526B2 | Linear motor actuator | Electricity | 18 | Expired |
| US6125968A | Lubricating oil supply system for a rolling guide apparatus | Mechanical Engineering; Lighting; Heating | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.