Drum Workshop, Inc.
98Patents
54Active
98Granted
45Portfolio score
Filing activity: Oct 22, 1992 → Feb 15, 2024 · 18 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6550860B2 | Wheeled telescopic percussion instrument container | Physics | 31 | Expired |
| US5377576A | Drum construction having wood and metal wall sections | Physics | 26 | Expired |
| US6894210B1 | Adjustable drum beating apparatus | Physics | 21 | Expired |
| US5616875A | Drum strand tensioner | Physics | 20 | Expired |
| US6518490B2 | Drum head with sound attenuating center coating | Physics | 19 | Expired |
| US5267500A | Remote control of cymbal apparatus | Physics | 19 | Expired |
| US6359205B1 | Drum pedal unit pedal position adjustment | Physics | 17 | Expired |
| US6278046A | Percussion instrument actuator assembly with selectable actuation | Physics | 15 | Expired |
| US6307136A | Percussion instrument actuator assembly | Physics | 15 | Expired |
| US6028259A | Weighting of drum pedal apparatus | Physics | 14 | Expired |
| US7365258B1 | Sound box with external and internal impact surfaces | Physics | 13 | Active |
| US7399916B1 | Percussion cow-bell holder apparatus | Physics | 13 | Active |
| US5920021A | Drum head with sound attenuating annular coating | Physics | 13 | Expired |
| US5936176A | Percussion instrument arm adapter | Physics | 12 | Expired |
| US5770810A | Drum tuning method and apparatus | Physics | 12 | Expired |
| US5520083A | Cushioned support for drum | Physics | 12 | Expired |
| US7468480B1 | Dual drum support and positioning | Physics | 11 | Active |
| US6822150B1 | Percussion instrument stand with guided pedal movement | Physics | 11 | Expired |
| USD580477S1 | Drum lug | General | 11 | Expired |
| US6015128A | Percussion bell clamping support | Physics | 10 | Expired |
| US6255572A | Rattling percussion instrument | Physics | 10 | Expired |
| US5431081A | Drum beater pedal bearing and apparatus | Physics | 9 | Expired |
| US6891098B1 | Anti-friction drum strand selective tensioner | Physics | 9 | Expired |
| US9466273B2 | Snare cajón instrument | Physics | 9 | Active |
| US8563841B1 | Safety hoop for drum | Physics | 9 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.