Cedar Grove Composting INC
At a glance
EmployeesNot reported
In business sinceNot reported
Industry
HeadquartersSeattle, WA
US patents1
SAM.gov UEITTHPSTDAMLB8
CAGE code5QD45
Incorporated inWA
LEI549300KKIGOXXWKSN258
- soils
- landscape materials
- food waste
- Puget Sound region
- Maple Valley
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
1 US patent granted AUG 8, 2000.
Basic materials chemistry 1
- Method and apparatus for composting organic materialUS 6,099,613 · granted AUG 8, 2000
Granted to Cedar Grove Composting, Inc. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Cedar Grove Composting INC | Seattle | WA | — | 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.