Growing community of inventors

Melville, NY, United States of America

Richard Stillwell

Average Co-Inventor Count = 3.87

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 1

Richard StillwellSergio G Bonsignore (2 patents)Richard StillwellTyler Burke (2 patents)Richard StillwellRyan Gorman (2 patents)Richard StillwellPaul Pearl (2 patents)Richard StillwellJames D'Addario (1 patent)Richard StillwellRichard Ned Steinberger (1 patent)Richard StillwellRandy Beck (1 patent)Richard StillwellElijah Navarro (1 patent)Richard StillwellEsteban Rodriguez (1 patent)Richard StillwellRichard Stillwell (4 patents)Sergio G BonsignoreSergio G Bonsignore (13 patents)Tyler BurkeTyler Burke (2 patents)Ryan GormanRyan Gorman (2 patents)Paul PearlPaul Pearl (2 patents)James D'AddarioJames D'Addario (41 patents)Richard Ned SteinbergerRichard Ned Steinberger (38 patents)Randy BeckRandy Beck (1 patent)Elijah NavarroElijah Navarro (1 patent)Esteban RodriguezEsteban Rodriguez (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. D'addario & Company, Inc. (4 from 43 patents)


4 patents:

1. 11854514 - Drumhead with reduced volume

2. 11189255 - Film formed snare and reduced volume snare drumhead

3. 10861425 - Rapid connect snare assembly

4. 10360880 - Percussive instrument mallet

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as of
12/11/2025
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