Celgard LLC
At a glance
Employees100-499
In business sinceNot reported
HeadquartersCharlotte, NC
US patents168
SAM.gov UEIF8NQXGXEKCM5
CAGE code4UB95
Incorporated inDE
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
168 US patents granted 1999–2025, 70 of them in the five years to SEP 2025, including 4 design patents.
Electrical machinery, apparatus, energy 89Chemical engineering 48Other special machines 14Surface technology, coating 5Measurement 3
- High melt temperature microporous lithium-ion rechargeable battery separators and methods of preparation and useUS 12,431,529 · granted SEP 30, 2025
- Membranes, separators, batteries, and methodsUS 12,427,543 · granted SEP 30, 2025
- Depositions or layers for microporous membranes, improved membranes, improved lithium battery separators, improved batteries, improved high voltage lithium batteries, and related methodsUS 12,417,886 · granted SEP 16, 2025
- Battery separators, coated battery separators, batteries, and related methodsUS 12,412,956 · granted SEP 9, 2025
- Microlayer membranes, improved battery separators, and related methodsUS 12,370,733 · granted JUL 29, 2025
Newest 5 shown · Granted to Celgard, LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Celgard LLC | Charlotte | NC | 100–499 | 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.