For the Inventor, By the Inventor

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Oxnard, CA, United States of America

Drum Workshop, Inc.

USPTO Granted Patents = 98

EPO Patents = 1

Trademarks = 125

Forward Citations = 578

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31 inventors (with patents filed for the assignee):

Donald G Lombardi (40 out of 52 patents)

Richard A Sikra (31 out of 33 patents)

John J Good (12 out of 12 patents)

4. Andrzej J Krol (8 out of 21 patents)

5. Victor Filonovich (7 out of 11 patents)

6. Sergio G Bonsignore (7 out of 13 patents)

7. Rich Sikra (6 out of 6 patents)

8. Mark Moralez (4 out of 4 patents)

9. Connor Lombardi (4 out of 4 patents)

10. Marcus Ryle (4 out of 4 patents)

11. Ruben Steinhauser (3 out of 10 patents)

12. Ray Enhoffer (2 out of 5 patents)

13. Akbar Moghaddam (2 out of 2 patents)

14. Richard D Simons (2 out of 23 patents)

15. Paul Piscoi (2 out of 2 patents)

Core Competencies:

Electronic Musical Instruments

Percussion Pedal System

Throw-Off Device

Drum Lug

Hi-Hat Pedal Assembly

Drum Shell Formation

Adjustable Cajón Instrument

Precision Drum Hoop

Transportable Drum Kit

Cymbal Holder

Snare Drum Adjustment

Magnetic Throw-Off

98 patents: Sort by Forward Citations

1. 12334039 - Electronic musical instruments and systems (2025-06-17),

2. 12300198 - Electronic musical instruments and systems (2025-05-13),

3. 12033604 - Electronic musical instruments, systems, and methods (2024-07-09),

4. 11922907 - Electronic cymbal instruments and systems (2024-03-05),

5. 11600250 - Throw-off device (2023-03-07),

6. 11328698 - Multipiece drum lug (2022-05-10),

7. 11037536 - Direct drive percussion pedal system (2021-06-15),

8. 10984767 - Drum with self-aligning snare (2021-04-20),

9. 10943571 - Mini hi-hat pedal system (2021-03-09),

10. 10867589 - Percussion pedal system (2020-12-15),

11. 10737369 - Nut devices for instrument stand (2020-08-11),

12. 10699681 - Transportable drum kit (2020-06-30),

13. 10249272 - Percussion instrument with adjustable auxiliary device (2019-04-02),

14. 10152955 - Percussion pedal assembly (2018-12-11),

15. 9972292 - Precision drum hoop devices and methods (2018-05-15),

Drum Workshop, Inc. is a leading manufacturer of drums, pedals, hardware, and other percussion instruments. Founded in 1972, the company is renowned for producing high-quality and innovative drum sets that are used by professional drummers and musicians worldwide. With a strong commitment to craftsmanship and attention to detail, Drum Workshop has become a trusted name in the music industry. Visit their website to explore their range of products and learn more about the company.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

98 Patents

#2 in Oxnard, CA

#876 in California

#3,712 in US

#7,672 in the World

Oxnard, CA, United States of America

Drum Workshop, Inc.

Forward Citations = 578

31 inventors:

Donald G Lombardi (40 out of 52 patents)

Richard A Sikra (31 out of 33 patents)

John J Good (12 out of 12 patents)

4. Andrzej J Krol (8 out of 21 patents)

5. Victor Filonovich (7 out of 11 patents)

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