A W Chesterton CO
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersGroveland, MA
US patents91
SAM.gov UEIN563V1T3Y9A6
CAGE code71431
Incorporated inMA
LEI5C1K34ZO5I3I4KAJ6B98
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
91 US patents granted 1978–2025, 12 of them in the five years to SEP 2025.
Mechanical elements 69Textile and paper machines 8Engines, pumps, turbines 8Other special machines 2Measurement 2
- Active flush regulation system for use with a mechanical seal or a packing assemblyUS 12,359,727 · granted JUL 15, 2025
- System and method for automatically energizing packing material with a packing loading assemblyUS 12,331,836 · granted JUN 17, 2025
- System and method for optimizing a fluid environment in split mechanical sealsUS 12,152,677 · granted NOV 26, 2024
- Single point actuation low-profile lock ring for a mechanical sealUS 12,085,109 · granted SEP 10, 2024
- Split polymer labyrinth seal assemblyUS 12,060,803 · granted AUG 13, 2024
Newest 5 shown · Granted to A.w. Chesterton Company · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plants
2 FACILITIES| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| A W Chesterton CO | Groveland | MA | — | LIKELY ACTIVE |
| A.w. Chesterton Company | Conroe | TX | — | UNVERIFIED |
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.