Koss Corporation
Doing business as Koss Holdings LLC
At a glance
Employees20-99
In business sinceNot reported
HeadquartersMilwaukee, WI
US patents99
SAM.gov UEIR6CKCSQH38E5
CAGE code50333
Incorporated inDE
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
99 US patents granted 1976–2025, 22 of them in the five years to SEP 2025, including 19 design patents.
Audio-visual technology 67Digital communication 10Other special machines 1Measurement 1Electrical machinery, apparatus, energy 1
- Wooden or other dielectric capacitive touch interface and loudspeaker having sameUS 12,302,048 · granted MAY 13, 2025
- Wooden or other dielectric capacitive touch interface and loudspeaker having sameUS 12,170,864 · granted DEC 17, 2024
- Personal acoustic systems and flexible earpiece mounts for the sameUS 12,035,096 · granted JUL 9, 2024
- Wooden or other dielectric capacitive touch interface and loudspeaker having sameUS 12,010,471 · granted JUN 11, 2024
- Wooden or other dielectric capacitive touch interface and loudspeaker having sameUS 11,950,033 · granted APR 2, 2024
Newest 5 shown · Granted to Koss Corporation · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Koss Corporation | Milwaukee | WI | 20–99 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.