Inpro/seal LLC
At a glance
Employees100-499
In business sinceNot reported
HeadquartersRock Island, IL
US patents25
SAM.gov UEICS8ARV4HWXQ6
CAGE code7Z516
Incorporated inIL
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
25 US patents granted 2010–2025, 9 of them in the five years to SEP 2025, including 1 design patent.
Mechanical elements 13Electrical machinery, apparatus, energy 8Engines, pumps, turbines 3
- Natural gas engines with fuel quality determinationUS 12,352,221 · granted JUL 8, 2025
- Shaft seal assemblyUS 12,297,909 · granted MAY 13, 2025
- Natural gas engines with fuel quality determinationUS 12,209,545 · granted JAN 28, 2025
- Shaft seal assemblyUS 12,163,590 · granted DEC 10, 2024
- Natural gas engines with fuel quality determinationUS 12,025,063 · granted JUL 2, 2024
Newest 5 shown · Granted to Inpro/Seal LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Inpro/seal LLC | Rock Island | IL | 100–499 | LIKELY 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.