Darex, LLC
78Patents
68Active
78Granted
54Portfolio score
Filing activity: Jul 9, 1975 → Sep 3, 2024 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8696407B2 | Cutting tool sharpener | Performing Operations; Transporting | 37 | Active |
| US5400546A | Precision twist drill sharpener/point splitting machine | Performing Operations; Transporting | 26 | Expired |
| US6626745B1 | Precision drill sharpener and grinding wheel assembly therefor | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4001975A | Twist drill sharpener and aligning fixture | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4485596A | Twist drill point splitting/web thinning apparatus | Performing Operations; Transporting | 16 | Expired |
| US4471581A | Universal twist drill sharpener apparatus | Performing Operations; Transporting | 14 | Expired |
| US9039494B1 | Hand-held sharpener with multiple abrasive rods to sharpen a cutting edge of a tool | Performing Operations; Transporting | 13 | Active |
| US4093247A | Chuck | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4916866A | End mill sharpener | Performing Operations; Transporting | 10 | Expired |
| USD730137S1 | Powered sharpener base unit | General | 10 | Active |
| US9216487B1 | Manual tool sharpener with moveable abrasive surface | Performing Operations; Transporting | 9 | Active |
| USD723895S1 | Attachment for a powered sharpener | General | 9 | Active |
| US4741226A | Power feed | Emerging Cross-Sectional Technologies | 7 | Expired |
| US9333612B2 | Tool sharpener with adjustable support guide | Performing Operations; Transporting | 7 | Active |
| US9914193B2 | Powered sharpener with cold forging member | Performing Operations; Transporting | 7 | Active |
| US8388413B1 | Wideblade sharpening guide | Performing Operations; Transporting | 7 | Active |
| USD986708S1 | Base member for a sharpening device used to sharpen a cutting tool | General | 6 | Active |
| USD987402S1 | Sharpening device used to sharpen a cutting tool | General | 6 | Active |
| USD929843S1 | Knife sharpener | General | 5 | Active |
| US8998680B1 | Sharpener for cutting tools | Performing Operations; Transporting | 5 | Active |
| US11642801B1 | Utility blades and combination blade holders | Performing Operations; Transporting | 5 | Active |
| USD829070S1 | Cutting tool sharpener | General | 5 | Active |
| US9956662B2 | Cutting tool sharpener | Performing Operations; Transporting | 5 | Active |
| US11498186B2 | Sharpener with precise adjustment capabilities | Performing Operations; Transporting | 5 | Active |
| US9358654B1 | Sharpening a cutting tool using multiple abrasive belts | Performing Operations; Transporting | 5 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.