H L Clausing INC
8038 Monticello Ave, Skokie, IL 60076
Operating signal within 12 months from two or more independent sources.
What they make
Glass Product Manufacturing Made of Purchased Glass327215Since 1927, H. L. Clausing Inc. has been producing mirrors and optical coatings using evaporated metal coating processes. The company serves research institutions, universities, military organizations, and industrial customers with coatings for optical applications.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Midwest Tropical Inc. | Skokie | Glass Product Manufacturing Made of Purchased Glass 327215 | LIKELY ACTIVE | 1.8 KM |
| American Labelmark Company | Chicago | Commercial Printing (except Screen and Books) 323111 | ACTIVE | 4.8 KM |
| Ennis-flint | Niles | Glass Product Manufacturing Made of Purchased Glass 327215 | UNVERIFIED | 5.8 KM |
| Star-Tech Glass, Inc. | Chicago | Glass Product Manufacturing Made of Purchased Glass 327215 | UNVERIFIED | 13.3 KM |
| Rhelge Glass Art | Northbrook | Glass Product Manufacturing Made of Purchased Glass 327215 | UNVERIFIED | 13.1 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | JUL 2026 |
| SAM GOV | OPERATING | NOV 2025 | NOV 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | NOV 2025 |
| CAGE CODE | SAM GOV | NOV 2025 |
| CITY | SAM GOV | NOV 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | NOV 2025 |
| REGISTRATION EXPIRATION | SAM GOV | NOV 2025 |
| STATE | SAM GOV | NOV 2025 |
| WEBSITE | SAM GOV | NOV 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.