Guill Tool & Engineering CO INC
At a glance
Employees20-99
In business sinceNot reported
Industry
HeadquartersWest Warwick, RI
US patents51
SAM.gov UEINVPEBL51CSF8
CAGE code29030
Incorporated inRI
- precision CNC machining
- flanges
- valves
- fittings
- brackets
- miscellaneous
- components
- precision assemblies
- AS9100D facility
- ISO 9001
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
51 US patents granted 2000–2025, 17 of them in the five years to SEP 2025.
Other special machines 41Optics 5Pharmaceuticals 3Surface technology, coating 2
- Method and apparatus for forming high strength productsUS 12,403,641 · granted SEP 2, 2025
- Coextruded, multilayer and multicomponent 3D printing inputsUS 11,992,999 · granted MAY 28, 2024
- Microlayer coextrusion to create a time-release drug substance delivery productUS 11,850,212 · granted DEC 26, 2023
- Micro-layer tubular extrusion productsUS 11,833,726 · granted DEC 5, 2023
- Microlayer coextrusion of electrical end productsUS 11,718,061 · granted AUG 8, 2023
Newest 5 shown · Granted to Guill Tool & Engineering Co., Inc. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Guill Tool & Engineering CO INC | West Warwick | RI | 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.