Hemlock Semiconductor Operations LLC
At a glance
Employees500+
In business sinceNot reported
Industry
HeadquartersHemlock, MI
US patents9
SAM.gov UEIHWU8LKK17RL9
CAGE code9KT53
Incorporated inMI
LEI549300NRYPWKX3U5ZR58
- decades
- focusing
- efficient production
- high-tech electronics
- cell phones
- solar panels
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
9 US patents granted 2018–2025, 2 of them in the five years to SEP 2025.
Measurement 3Surface technology, coating 2Handling 1Electrical machinery, apparatus, energy 1Thermal processes and apparatus 1
- Method and apparatus for removal of surface carbon from polysiliconUS 12,187,617 · granted JAN 7, 2025
- Dichlorosilane compensating control strategy for improved polycrystalline silicon growthUS 10,851,459 · granted DEC 1, 2020
- Method of determining a concentration of a material not dissolved by silicon etchants contaminating a productUS 10,345,211 · granted JUL 9, 2019
- Heat exchangerUS 10,267,574 · granted APR 23, 2019
- Susceptor arrangement for a reactor and method of heating a process gas for a reactorUS 10,266,414 · granted APR 23, 2019
Newest 5 shown · Granted to Hemlock Semiconductor Operations LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Hemlock Semiconductor Operations LLC | Hemlock | MI | 500+ | 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.