Top-Tuning System for Hand Percussion Instrument

Drum Workshop, Inc.

A patent family: one line of work, grouped by real continuity rather than by a technology label inferred from titles. 2 of these applications claim priority to application 62/086,701, filed Dec 2, 2014. A shared origin can cover several different claimed inventions, which is why members here may not share a title. In-force patents first, soonest term end first, then patent number. Expired patents follow, in the same order.

Patent	Title	Holder	Status	Expires	Time remaining	Confidence
US 7,964,781	Rotating Multi-Stem Instrument Bracket Drum Workshop, Inc. In force Term ends Jan 14, 2030 · High confidence	Drum Workshop, Inc.	In force	Term ends Jan 14, 2030	Term ends Jan 14, 2030	High confidence
US 8,609,967	Top-Tuning System for Hand Percussion Instrument Drum Workshop, Inc. In force Term ends Jan 14, 2030 · High confidence	Drum Workshop, Inc.	In force	Term ends Jan 14, 2030	Term ends Jan 14, 2030	High confidence
US 9,437,176	Top-Tuning System for Hand Percussion Instrument Drum Workshop, Inc. In force Term ends Jan 14, 2030 · High confidence	Drum Workshop, Inc.	In force	Term ends Jan 14, 2030	Term ends Jan 14, 2030	High confidence
US 8,101,841	One-Handed Musical Triangle Drum Workshop, Inc. In force Term ends Feb 19, 2030 · High confidence	Drum Workshop, Inc.	In force	Term ends Feb 19, 2030	Term ends Feb 19, 2030	High confidence
US 8,558,097	Detachable Shaker Drum Workshop, Inc. In force Term ends Oct 12, 2031 · High confidence	Drum Workshop, Inc.	In force	Term ends Oct 12, 2031	Term ends Oct 12, 2031	High confidence
US 9,361,867	Detachable Shaker Drum Workshop, Inc. In force Term ends Oct 12, 2031 · High confidence	Drum Workshop, Inc.	In force	Term ends Oct 12, 2031	Term ends Oct 12, 2031	High confidence
US D786,337	Shaped Percussion Instrument Drum Workshop, Inc. In force Term ends May 9, 2032 · High confidence	Drum Workshop, Inc.	In force	Term ends May 9, 2032	Term ends May 9, 2032	High confidence
US 8,912,417	Mutable High-Hat Tambourine Drum Workshop, Inc. In force Term ends Mar 15, 2033 · High confidence	Drum Workshop, Inc.	In force	Term ends Mar 15, 2033	Term ends Mar 15, 2033	High confidence
US 9,087,497	Adjustable Cajón Instrument Drum Workshop, Inc. In force Term ends Sep 11, 2033 · High confidence	Drum Workshop, Inc.	In force	Term ends Sep 11, 2033	Term ends Sep 11, 2033	High confidence
US 9,570,053	Adjustable Caj¿n Instrument Drum Workshop, Inc. In force Term ends Sep 11, 2033 · High confidence	Drum Workshop, Inc.	In force	Term ends Sep 11, 2033	Term ends Sep 11, 2033	High confidence
15 more patents in this group · Pro

10 of 25 records shown. In-force patents first, soonest term end first, then patent number. Expired patents follow, in the same order.

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15 of these are in force and held by Drum Workshop, Inc..

Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.