Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
AK

Andrzej Krol

DWDrum Workshop: 8 patents #4 of 29Top 15%
KMKmc Music: 7 patents #1 of 15Top 7%
DCD'Addario & Company: 6 patents #3 of 38Top 8%
LPLatin Percussion: 6 patents #6 of 12Top 50%
SFSUNY Research Foundation: 5 patents #430 of 1,231Top 35%
MLMccloskey International Limited: 4 patents #3 of 10Top 30%
CUCornell University: 2 patents #404 of 1,984Top 25%
MCMemorial Sloan Kettering Cancer Center: 2 patents #240 of 761Top 35%
UCUniversity Of South Carolina: 2 patents #185 of 728Top 30%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
URUniversity Of Rochester: 1 patents #496 of 1,162Top 45%
Wayne, NJ: #16 of 644 inventorsTop 3%
New Jersey: #1,656 of 69,400 inventorsTop 3%
Overall (All Time): #93,721 of 4,157,543Top 3%
36 Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
8609967 Top-tuning system for hand percussion instrument Richard Simons, Ray Enhoffer, Chatchai Chandontrikit 2013-12-17
8558097 Detachable shaker Victor Filonovich, Sergio G. Bonsignore 2013-10-15
8101841 One-handed musical triangle Douglas Hinrichs, Ray Enhoffer, Richard Simons 2012-01-24
7964781 Rotating multi-stem instrument bracket Randy Lovvorn, Ray Enhoffer, Richard Simons 2011-06-21
7074996 Drum head assembly and method of tensioning a drum head Richard Simons, Raymond Enhoffer 2006-07-11
6980625 System and method for generating microfocused laser-based x-rays for mammography Jean-Claude Kieffer 2005-12-27
D470169 Shaken idiophone Raymond Enhoffer, Richard Simons, Bashiri Johnson 2003-02-11
6489546 Musical instrument and method of making same Raymond Enhoffer, Richard Simons 2002-12-03
6362406 Shaken idiophone Raymond Enhoffer, Richard Simons, Bashiri Johnson 2002-03-26
6271449 Musical instrument Raymond Enhoffer, Richard Simons, Kenneth Benjamin, Martin Cohen 2001-08-07
6091011 Multiple musical instrument holder Richard Simons 2000-07-18